Merge pull request #6266 from bunnei/kautoobject-refactor

Kernel Rework: Migrate kernel objects to KAutoObject

src/common/common_funcs.h

@@ -108,6 +108,14 @@ __declspec(dllimport) void __stdcall DebugBreak(void);
         }                                                                                          \
     }
 
+#define YUZU_NON_COPYABLE(cls)                                                                     \
+    cls(const cls&) = delete;                                                                      \
+    cls& operator=(const cls&) = delete
+
+#define YUZU_NON_MOVEABLE(cls)                                                                     \
+    cls(cls&&) = delete;                                                                           \
+    cls& operator=(cls&&) = delete
+
 #define R_SUCCEEDED(res) (res.IsSuccess())
 
 /// Evaluates an expression that returns a result, and returns the result if it would fail.
@@ -128,4 +136,19 @@ namespace Common {
     return u32(a) | u32(b) << 8 | u32(c) << 16 | u32(d) << 24;
 }
 
+// std::size() does not support zero-size C arrays. We're fixing that.
+template <class C>
+constexpr auto Size(const C& c) -> decltype(c.size()) {
+    return std::size(c);
+}
+
+template <class C>
+constexpr std::size_t Size(const C& c) {
+    if constexpr (sizeof(C) == 0) {
+        return 0;
+    } else {
+        return std::size(c);
+    }
+}
+
 } // namespace Common

src/common/intrusive_red_black_tree.h

@@ -509,7 +509,6 @@ private:
 
 private:
     static constexpr TypedStorage<Derived> DerivedStorage = {};
-    static_assert(GetParent(GetNode(GetPointer(DerivedStorage))) == GetPointer(DerivedStorage));
 };
 
 template <auto T, class Derived = impl::GetParentType<T>>

src/common/parent_of_member.h

@@ -133,27 +133,27 @@ template <auto MemberPtr>
 using GetMemberType = typename GetMemberPointerTraits<decltype(MemberPtr)>::Member;
 
 template <auto MemberPtr, typename RealParentType = GetParentType<MemberPtr>>
-static inline std::ptrdiff_t OffsetOf = [] {
+constexpr std::ptrdiff_t OffsetOf() {
     using DeducedParentType = GetParentType<MemberPtr>;
     using MemberType = GetMemberType<MemberPtr>;
     static_assert(std::is_base_of<DeducedParentType, RealParentType>::value ||
                   std::is_same<RealParentType, DeducedParentType>::value);
 
     return OffsetOfCalculator<RealParentType, MemberType>::OffsetOf(MemberPtr);
-}();
+};
 
 } // namespace impl
 
 template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
 constexpr RealParentType& GetParentReference(impl::GetMemberType<MemberPtr>* member) {
-    std::ptrdiff_t Offset = impl::OffsetOf<MemberPtr, RealParentType>;
+    std::ptrdiff_t Offset = impl::OffsetOf<MemberPtr, RealParentType>();
     return *static_cast<RealParentType*>(
         static_cast<void*>(static_cast<uint8_t*>(static_cast<void*>(member)) - Offset));
 }
 
 template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
 constexpr RealParentType const& GetParentReference(impl::GetMemberType<MemberPtr> const* member) {
-    std::ptrdiff_t Offset = impl::OffsetOf<MemberPtr, RealParentType>;
+    std::ptrdiff_t Offset = impl::OffsetOf<MemberPtr, RealParentType>();
     return *static_cast<const RealParentType*>(static_cast<const void*>(
         static_cast<const uint8_t*>(static_cast<const void*>(member)) - Offset));
 }

src/core/CMakeLists.txt

@@ -144,31 +144,40 @@ add_library(core STATIC
     hle/kernel/board/nintendo/nx/k_system_control.cpp
     hle/kernel/board/nintendo/nx/k_system_control.h
     hle/kernel/board/nintendo/nx/secure_monitor.h
-    hle/kernel/client_port.cpp
-    hle/kernel/client_port.h
-    hle/kernel/client_session.cpp
-    hle/kernel/client_session.h
     hle/kernel/code_set.cpp
     hle/kernel/code_set.h
     hle/kernel/svc_results.h
     hle/kernel/global_scheduler_context.cpp
     hle/kernel/global_scheduler_context.h
-    hle/kernel/handle_table.cpp
-    hle/kernel/handle_table.h
     hle/kernel/hle_ipc.cpp
     hle/kernel/hle_ipc.h
+    hle/kernel/init/init_slab_setup.cpp
+    hle/kernel/init/init_slab_setup.h
     hle/kernel/k_address_arbiter.cpp
     hle/kernel/k_address_arbiter.h
     hle/kernel/k_address_space_info.cpp
     hle/kernel/k_address_space_info.h
+    hle/kernel/k_auto_object.cpp
+    hle/kernel/k_auto_object.h
+    hle/kernel/k_auto_object_container.cpp
+    hle/kernel/k_auto_object_container.h
     hle/kernel/k_affinity_mask.h
+    hle/kernel/k_class_token.cpp
+    hle/kernel/k_class_token.h
+    hle/kernel/k_client_port.cpp
+    hle/kernel/k_client_port.h
+    hle/kernel/k_client_session.cpp
+    hle/kernel/k_client_session.h
     hle/kernel/k_condition_variable.cpp
     hle/kernel/k_condition_variable.h
     hle/kernel/k_event.cpp
     hle/kernel/k_event.h
+    hle/kernel/k_handle_table.cpp
+    hle/kernel/k_handle_table.h
     hle/kernel/k_light_condition_variable.h
     hle/kernel/k_light_lock.cpp
     hle/kernel/k_light_lock.h
+    hle/kernel/k_linked_list.h
     hle/kernel/k_memory_block.h
     hle/kernel/k_memory_block_manager.cpp
     hle/kernel/k_memory_block_manager.h
@@ -185,7 +194,11 @@ add_library(core STATIC
     hle/kernel/k_page_linked_list.h
     hle/kernel/k_page_table.cpp
     hle/kernel/k_page_table.h
+    hle/kernel/k_port.cpp
+    hle/kernel/k_port.h
     hle/kernel/k_priority_queue.h
+    hle/kernel/k_process.cpp
+    hle/kernel/k_process.h
     hle/kernel/k_readable_event.cpp
     hle/kernel/k_readable_event.h
     hle/kernel/k_resource_limit.cpp
@@ -196,6 +209,12 @@ add_library(core STATIC
     hle/kernel/k_scoped_lock.h
     hle/kernel/k_scoped_resource_reservation.h
     hle/kernel/k_scoped_scheduler_lock_and_sleep.h
+    hle/kernel/k_server_port.cpp
+    hle/kernel/k_server_port.h
+    hle/kernel/k_server_session.cpp
+    hle/kernel/k_server_session.h
+    hle/kernel/k_session.cpp
+    hle/kernel/k_session.h
     hle/kernel/k_shared_memory.cpp
     hle/kernel/k_shared_memory.h
     hle/kernel/k_slab_heap.h
@@ -208,28 +227,21 @@ add_library(core STATIC
     hle/kernel/k_thread.h
     hle/kernel/k_thread_queue.h
     hle/kernel/k_trace.h
+    hle/kernel/k_transfer_memory.cpp
+    hle/kernel/k_transfer_memory.h
     hle/kernel/k_writable_event.cpp
     hle/kernel/k_writable_event.h
     hle/kernel/kernel.cpp
     hle/kernel/kernel.h
     hle/kernel/memory_types.h
-    hle/kernel/object.cpp
-    hle/kernel/object.h
     hle/kernel/physical_core.cpp
     hle/kernel/physical_core.h
     hle/kernel/physical_memory.h
-    hle/kernel/process.cpp
-    hle/kernel/process.h
     hle/kernel/process_capability.cpp
     hle/kernel/process_capability.h
-    hle/kernel/server_port.cpp
-    hle/kernel/server_port.h
-    hle/kernel/server_session.cpp
-    hle/kernel/server_session.h
     hle/kernel/service_thread.cpp
     hle/kernel/service_thread.h
-    hle/kernel/session.cpp
-    hle/kernel/session.h
+    hle/kernel/slab_helpers.h
     hle/kernel/svc.cpp
     hle/kernel/svc.h
     hle/kernel/svc_common.h
@@ -237,8 +249,6 @@ add_library(core STATIC
     hle/kernel/svc_wrap.h
     hle/kernel/time_manager.cpp
     hle/kernel/time_manager.h
-    hle/kernel/transfer_memory.cpp
-    hle/kernel/transfer_memory.h
     hle/lock.cpp
     hle/lock.h
     hle/result.h

src/core/arm/dynarmic/arm_dynarmic_64.cpp

@@ -16,8 +16,8 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/hardware_properties.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_scheduler.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/svc.h"
 #include "core/memory.h"
 

src/core/core.cpp

@@ -27,12 +27,12 @@
 #include "core/file_sys/vfs_concat.h"
 #include "core/file_sys/vfs_real.h"
 #include "core/hardware_interrupt_manager.h"
-#include "core/hle/kernel/client_port.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/physical_core.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/service/am/applets/applets.h"
 #include "core/hle/service/apm/controller.h"
 #include "core/hle/service/filesystem/filesystem.h"
@@ -166,9 +166,9 @@ struct System::Impl {
         cpu_manager.SetAsyncGpu(is_async_gpu);
         core_timing.SetMulticore(is_multicore);
 
-        core_timing.Initialize([&system]() { system.RegisterHostThread(); });
         kernel.Initialize();
         cpu_manager.Initialize();
+        core_timing.Initialize([&system]() { system.RegisterHostThread(); });
 
         const auto current_time = std::chrono::duration_cast<std::chrono::seconds>(
             std::chrono::system_clock::now().time_since_epoch());
@@ -233,8 +233,11 @@ struct System::Impl {
         }
 
         telemetry_session->AddInitialInfo(*app_loader, fs_controller, *content_provider);
-        auto main_process =
-            Kernel::Process::Create(system, "main", Kernel::Process::ProcessType::Userland);
+        auto main_process = Kernel::KProcess::Create(system.Kernel());
+        ASSERT(Kernel::KProcess::Initialize(main_process, system, "main",
+                                            Kernel::KProcess::ProcessType::Userland)
+                   .IsSuccess());
+        main_process->Open();
         const auto [load_result, load_parameters] = app_loader->Load(*main_process, system);
         if (load_result != Loader::ResultStatus::Success) {
             LOG_CRITICAL(Core, "Failed to load ROM (Error {})!", load_result);
@@ -244,7 +247,7 @@ struct System::Impl {
                                              static_cast<u32>(load_result));
         }
         AddGlueRegistrationForProcess(*app_loader, *main_process);
-        kernel.MakeCurrentProcess(main_process.get());
+        kernel.MakeCurrentProcess(main_process);
         kernel.InitializeCores();
 
         // Initialize cheat engine
@@ -311,6 +314,7 @@ struct System::Impl {
         gpu_core.reset();
         perf_stats.reset();
         kernel.Shutdown();
+        memory.Reset();
         applet_manager.ClearAll();
 
         LOG_DEBUG(Core, "Shutdown OK");
@@ -322,7 +326,7 @@ struct System::Impl {
         return app_loader->ReadTitle(out);
     }
 
-    void AddGlueRegistrationForProcess(Loader::AppLoader& loader, Kernel::Process& process) {
+    void AddGlueRegistrationForProcess(Loader::AppLoader& loader, Kernel::KProcess& process) {
         std::vector<u8> nacp_data;
         FileSys::NACP nacp;
         if (loader.ReadControlData(nacp) == Loader::ResultStatus::Success) {
@@ -513,7 +517,7 @@ const Kernel::GlobalSchedulerContext& System::GlobalSchedulerContext() const {
     return impl->kernel.GlobalSchedulerContext();
 }
 
-Kernel::Process* System::CurrentProcess() {
+Kernel::KProcess* System::CurrentProcess() {
     return impl->kernel.CurrentProcess();
 }
 
@@ -525,7 +529,7 @@ const Core::DeviceMemory& System::DeviceMemory() const {
     return *impl->device_memory;
 }
 
-const Kernel::Process* System::CurrentProcess() const {
+const Kernel::KProcess* System::CurrentProcess() const {
     return impl->kernel.CurrentProcess();
 }
 

src/core/core.h

@@ -12,7 +12,6 @@
 
 #include "common/common_types.h"
 #include "core/file_sys/vfs_types.h"
-#include "core/hle/kernel/object.h"
 
 namespace Core::Frontend {
 class EmuWindow;
@@ -29,7 +28,7 @@ namespace Kernel {
 class GlobalSchedulerContext;
 class KernelCore;
 class PhysicalCore;
-class Process;
+class KProcess;
 class KScheduler;
 } // namespace Kernel
 
@@ -264,10 +263,10 @@ public:
     [[nodiscard]] const Core::DeviceMemory& DeviceMemory() const;
 
     /// Provides a pointer to the current process
-    [[nodiscard]] Kernel::Process* CurrentProcess();
+    [[nodiscard]] Kernel::KProcess* CurrentProcess();
 
     /// Provides a constant pointer to the current process.
-    [[nodiscard]] const Kernel::Process* CurrentProcess() const;
+    [[nodiscard]] const Kernel::KProcess* CurrentProcess() const;
 
     /// Provides a reference to the core timing instance.
     [[nodiscard]] Timing::CoreTiming& CoreTiming();

src/core/file_sys/romfs_factory.cpp

@@ -13,7 +13,7 @@
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/registered_cache.h"
 #include "core/file_sys/romfs_factory.h"
-#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/service/filesystem/filesystem.h"
 #include "core/loader/loader.h"
 

src/core/file_sys/savedata_factory.cpp

@@ -9,7 +9,7 @@
 #include "core/core.h"
 #include "core/file_sys/savedata_factory.h"
 #include "core/file_sys/vfs.h"
-#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/k_process.h"
 
 namespace FileSys {
 

src/core/hle/ipc_helpers.h

@@ -13,12 +13,9 @@
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "core/hle/ipc.h"
-#include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/client_session.h"
 #include "core/hle/kernel/hle_ipc.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/session.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_session.h"
 #include "core/hle/result.h"
 
 namespace IPC {
@@ -137,9 +134,11 @@ public:
         if (context->Session()->IsDomain()) {
             context->AddDomainObject(std::move(iface));
         } else {
-            auto [client, server] = Kernel::Session::Create(kernel, iface->GetServiceName());
-            context->AddMoveObject(std::move(client));
-            iface->ClientConnected(std::move(server));
+            auto* session = Kernel::KSession::Create(kernel);
+            session->Initialize(nullptr, iface->GetServiceName());
+
+            context->AddMoveObject(&session->GetClientSession());
+            iface->ClientConnected(&session->GetServerSession());
         }
     }
 
@@ -215,10 +214,16 @@ public:
     void PushRaw(const T& value);
 
     template <typename... O>
-    void PushMoveObjects(std::shared_ptr<O>... pointers);
+    void PushMoveObjects(O*... pointers);
+
+    template <typename... O>
+    void PushMoveObjects(O&... pointers);
 
     template <typename... O>
-    void PushCopyObjects(std::shared_ptr<O>... pointers);
+    void PushCopyObjects(O*... pointers);
+
+    template <typename... O>
+    void PushCopyObjects(O&... pointers);
 
 private:
     u32 normal_params_size{};
@@ -301,18 +306,34 @@ void ResponseBuilder::Push(const First& first_value, const Other&... other_value
 }
 
 template <typename... O>
-inline void ResponseBuilder::PushCopyObjects(std::shared_ptr<O>... pointers) {
+inline void ResponseBuilder::PushCopyObjects(O*... pointers) {
     auto objects = {pointers...};
     for (auto& object : objects) {
-        context->AddCopyObject(std::move(object));
+        context->AddCopyObject(object);
     }
 }
 
 template <typename... O>
-inline void ResponseBuilder::PushMoveObjects(std::shared_ptr<O>... pointers) {
+inline void ResponseBuilder::PushCopyObjects(O&... pointers) {
+    auto objects = {&pointers...};
+    for (auto& object : objects) {
+        context->AddCopyObject(object);
+    }
+}
+
+template <typename... O>
+inline void ResponseBuilder::PushMoveObjects(O*... pointers) {
     auto objects = {pointers...};
     for (auto& object : objects) {
-        context->AddMoveObject(std::move(object));
+        context->AddMoveObject(object);
+    }
+}
+
+template <typename... O>
+inline void ResponseBuilder::PushMoveObjects(O&... pointers) {
+    auto objects = {&pointers...};
+    for (auto& object : objects) {
+        context->AddMoveObject(object);
     }
 }
 
@@ -359,12 +380,6 @@ public:
     template <typename T>
     T PopRaw();
 
-    template <typename T>
-    std::shared_ptr<T> GetMoveObject(std::size_t index);
-
-    template <typename T>
-    std::shared_ptr<T> GetCopyObject(std::size_t index);
-
     template <class T>
     std::shared_ptr<T> PopIpcInterface() {
         ASSERT(context->Session()->IsDomain());
@@ -469,14 +484,4 @@ void RequestParser::Pop(First& first_value, Other&... other_values) {
     Pop(other_values...);
 }
 
-template <typename T>
-std::shared_ptr<T> RequestParser::GetMoveObject(std::size_t index) {
-    return context->GetMoveObject<T>(index);
-}
-
-template <typename T>
-std::shared_ptr<T> RequestParser::GetCopyObject(std::size_t index) {
-    return context->GetCopyObject<T>(index);
-}
-
 } // namespace IPC

src/core/hle/kernel/client_port.cpp

@@ -1,47 +0,0 @@
-// Copyright 2016 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/client_session.h"
-#include "core/hle/kernel/hle_ipc.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/server_port.h"
-#include "core/hle/kernel/session.h"
-#include "core/hle/kernel/svc_results.h"
-
-namespace Kernel {
-
-ClientPort::ClientPort(KernelCore& kernel) : Object{kernel} {}
-ClientPort::~ClientPort() = default;
-
-std::shared_ptr<ServerPort> ClientPort::GetServerPort() const {
-    return server_port;
-}
-
-ResultVal<std::shared_ptr<ClientSession>> ClientPort::Connect() {
-    if (active_sessions >= max_sessions) {
-        return ResultMaxConnectionsReached;
-    }
-    active_sessions++;
-
-    auto [client, server] = Kernel::Session::Create(kernel, name);
-
-    if (server_port->HasHLEHandler()) {
-        server_port->GetHLEHandler()->ClientConnected(std::move(server));
-    } else {
-        server_port->AppendPendingSession(std::move(server));
-    }
-
-    return MakeResult(std::move(client));
-}
-
-void ClientPort::ConnectionClosed() {
-    if (active_sessions == 0) {
-        return;
-    }
-
-    --active_sessions;
-}
-
-} // namespace Kernel

src/core/hle/kernel/client_port.h

@@ -1,63 +0,0 @@
-// Copyright 2016 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-#include <string>
-
-#include "common/common_types.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/result.h"
-
-namespace Kernel {
-
-class ClientSession;
-class KernelCore;
-class ServerPort;
-
-class ClientPort final : public Object {
-public:
-    explicit ClientPort(KernelCore& kernel);
-    ~ClientPort() override;
-
-    friend class ServerPort;
-    std::string GetTypeName() const override {
-        return "ClientPort";
-    }
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::ClientPort;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    std::shared_ptr<ServerPort> GetServerPort() const;
-
-    /**
-     * Creates a new Session pair, adds the created ServerSession to the associated ServerPort's
-     * list of pending sessions, and signals the ServerPort, causing any threads
-     * waiting on it to awake.
-     * @returns ClientSession The client endpoint of the created Session pair, or error code.
-     */
-    ResultVal<std::shared_ptr<ClientSession>> Connect();
-
-    /**
-     * Signifies that a previously active connection has been closed,
-     * decreasing the total number of active connections to this port.
-     */
-    void ConnectionClosed();
-
-    void Finalize() override {}
-
-private:
-    std::shared_ptr<ServerPort> server_port; ///< ServerPort associated with this client port.
-    u32 max_sessions = 0;    ///< Maximum number of simultaneous sessions the port can have
-    u32 active_sessions = 0; ///< Number of currently open sessions to this port
-    std::string name;        ///< Name of client port (optional)
-};
-
-} // namespace Kernel

src/core/hle/kernel/client_session.cpp

@@ -1,53 +0,0 @@
-// Copyright 2019 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "core/hle/kernel/client_session.h"
-#include "core/hle/kernel/hle_ipc.h"
-#include "core/hle/kernel/k_thread.h"
-#include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/session.h"
-#include "core/hle/kernel/svc_results.h"
-#include "core/hle/result.h"
-
-namespace Kernel {
-
-ClientSession::ClientSession(KernelCore& kernel) : KSynchronizationObject{kernel} {}
-
-ClientSession::~ClientSession() {
-    // This destructor will be called automatically when the last ClientSession handle is closed by
-    // the emulated application.
-    if (parent->Server()) {
-        parent->Server()->ClientDisconnected();
-    }
-}
-
-bool ClientSession::IsSignaled() const {
-    UNIMPLEMENTED();
-    return true;
-}
-
-ResultVal<std::shared_ptr<ClientSession>> ClientSession::Create(KernelCore& kernel,
-                                                                std::shared_ptr<Session> parent,
-                                                                std::string name) {
-    std::shared_ptr<ClientSession> client_session{std::make_shared<ClientSession>(kernel)};
-
-    client_session->name = std::move(name);
-    client_session->parent = std::move(parent);
-
-    return MakeResult(std::move(client_session));
-}
-
-ResultCode ClientSession::SendSyncRequest(std::shared_ptr<KThread> thread,
-                                          Core::Memory::Memory& memory,
-                                          Core::Timing::CoreTiming& core_timing) {
-    // Keep ServerSession alive until we're done working with it.
-    if (!parent->Server()) {
-        return ResultSessionClosedByRemote;
-    }
-
-    // Signal the server session that new data is available
-    return parent->Server()->HandleSyncRequest(std::move(thread), memory, core_timing);
-}
-
-} // namespace Kernel

src/core/hle/kernel/client_session.h

@@ -1,68 +0,0 @@
-// Copyright 2019 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-#include <string>
-
-#include "core/hle/kernel/k_synchronization_object.h"
-#include "core/hle/result.h"
-
-union ResultCode;
-
-namespace Core::Memory {
-class Memory;
-}
-
-namespace Core::Timing {
-class CoreTiming;
-}
-
-namespace Kernel {
-
-class KernelCore;
-class Session;
-class KThread;
-
-class ClientSession final : public KSynchronizationObject {
-public:
-    explicit ClientSession(KernelCore& kernel);
-    ~ClientSession() override;
-
-    friend class Session;
-
-    std::string GetTypeName() const override {
-        return "ClientSession";
-    }
-
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::ClientSession;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    ResultCode SendSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory,
-                               Core::Timing::CoreTiming& core_timing);
-
-    bool IsSignaled() const override;
-
-    void Finalize() override {}
-
-private:
-    static ResultVal<std::shared_ptr<ClientSession>> Create(KernelCore& kernel,
-                                                            std::shared_ptr<Session> parent,
-                                                            std::string name = "Unknown");
-
-    /// The parent session, which links to the server endpoint.
-    std::shared_ptr<Session> parent;
-
-    /// Name of the client session (optional)
-    std::string name;
-};
-
-} // namespace Kernel

src/core/hle/kernel/global_scheduler_context.cpp

@@ -17,12 +17,12 @@ GlobalSchedulerContext::GlobalSchedulerContext(KernelCore& kernel)
 
 GlobalSchedulerContext::~GlobalSchedulerContext() = default;
 
-void GlobalSchedulerContext::AddThread(std::shared_ptr<KThread> thread) {
+void GlobalSchedulerContext::AddThread(KThread* thread) {
     std::scoped_lock lock{global_list_guard};
-    thread_list.push_back(std::move(thread));
+    thread_list.push_back(thread);
 }
 
-void GlobalSchedulerContext::RemoveThread(std::shared_ptr<KThread> thread) {
+void GlobalSchedulerContext::RemoveThread(KThread* thread) {
     std::scoped_lock lock{global_list_guard};
     thread_list.erase(std::remove(thread_list.begin(), thread_list.end(), thread),
                       thread_list.end());

src/core/hle/kernel/global_scheduler_context.h

@@ -38,13 +38,13 @@ public:
     ~GlobalSchedulerContext();
 
     /// Adds a new thread to the scheduler
-    void AddThread(std::shared_ptr<KThread> thread);
+    void AddThread(KThread* thread);
 
     /// Removes a thread from the scheduler
-    void RemoveThread(std::shared_ptr<KThread> thread);
+    void RemoveThread(KThread* thread);
 
     /// Returns a list of all threads managed by the scheduler
-    [[nodiscard]] const std::vector<std::shared_ptr<KThread>>& GetThreadList() const {
+    [[nodiscard]] const std::vector<KThread*>& GetThreadList() const {
         return thread_list;
     }
 
@@ -79,7 +79,7 @@ private:
     LockType scheduler_lock;
 
     /// Lists all thread ids that aren't deleted/etc.
-    std::vector<std::shared_ptr<KThread>> thread_list;
+    std::vector<KThread*> thread_list;
     Common::SpinLock global_list_guard{};
 };
 

src/core/hle/kernel/handle_table.cpp

@@ -1,131 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <utility>
-#include "common/assert.h"
-#include "common/logging/log.h"
-#include "core/core.h"
-#include "core/hle/kernel/handle_table.h"
-#include "core/hle/kernel/k_scheduler.h"
-#include "core/hle/kernel/k_thread.h"
-#include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
-#include "core/hle/kernel/svc_results.h"
-
-namespace Kernel {
-namespace {
-constexpr u16 GetSlot(Handle handle) {
-    return static_cast<u16>(handle >> 15);
-}
-
-constexpr u16 GetGeneration(Handle handle) {
-    return static_cast<u16>(handle & 0x7FFF);
-}
-} // Anonymous namespace
-
-HandleTable::HandleTable(KernelCore& kernel) : kernel{kernel} {
-    Clear();
-}
-
-HandleTable::~HandleTable() = default;
-
-ResultCode HandleTable::SetSize(s32 handle_table_size) {
-    if (static_cast<u32>(handle_table_size) > MAX_COUNT) {
-        LOG_ERROR(Kernel, "Handle table size {} is greater than {}", handle_table_size, MAX_COUNT);
-        return ResultOutOfMemory;
-    }
-
-    // Values less than or equal to zero indicate to use the maximum allowable
-    // size for the handle table in the actual kernel, so we ignore the given
-    // value in that case, since we assume this by default unless this function
-    // is called.
-    if (handle_table_size > 0) {
-        table_size = static_cast<u16>(handle_table_size);
-    }
-
-    return RESULT_SUCCESS;
-}
-
-ResultVal<Handle> HandleTable::Create(std::shared_ptr<Object> obj) {
-    DEBUG_ASSERT(obj != nullptr);
-
-    const u16 slot = next_free_slot;
-    if (slot >= table_size) {
-        LOG_ERROR(Kernel, "Unable to allocate Handle, too many slots in use.");
-        return ResultHandleTableFull;
-    }
-    next_free_slot = generations[slot];
-
-    const u16 generation = next_generation++;
-
-    // Overflow count so it fits in the 15 bits dedicated to the generation in the handle.
-    // Horizon OS uses zero to represent an invalid handle, so skip to 1.
-    if (next_generation >= (1 << 15)) {
-        next_generation = 1;
-    }
-
-    generations[slot] = generation;
-    objects[slot] = std::move(obj);
-
-    Handle handle = generation | (slot << 15);
-    return MakeResult<Handle>(handle);
-}
-
-ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
-    std::shared_ptr<Object> object = GetGeneric(handle);
-    if (object == nullptr) {
-        LOG_ERROR(Kernel, "Tried to duplicate invalid handle: {:08X}", handle);
-        return ResultInvalidHandle;
-    }
-    return Create(std::move(object));
-}
-
-ResultCode HandleTable::Close(Handle handle) {
-    if (!IsValid(handle)) {
-        LOG_ERROR(Kernel, "Handle is not valid! handle={:08X}", handle);
-        return ResultInvalidHandle;
-    }
-
-    const u16 slot = GetSlot(handle);
-
-    if (objects[slot].use_count() == 1) {
-        objects[slot]->Finalize();
-    }
-
-    objects[slot] = nullptr;
-
-    generations[slot] = next_free_slot;
-    next_free_slot = slot;
-    return RESULT_SUCCESS;
-}
-
-bool HandleTable::IsValid(Handle handle) const {
-    const std::size_t slot = GetSlot(handle);
-    const u16 generation = GetGeneration(handle);
-
-    return slot < table_size && objects[slot] != nullptr && generations[slot] == generation;
-}
-
-std::shared_ptr<Object> HandleTable::GetGeneric(Handle handle) const {
-    if (handle == CurrentThread) {
-        return SharedFrom(kernel.CurrentScheduler()->GetCurrentThread());
-    } else if (handle == CurrentProcess) {
-        return SharedFrom(kernel.CurrentProcess());
-    }
-
-    if (!IsValid(handle)) {
-        return nullptr;
-    }
-    return objects[GetSlot(handle)];
-}
-
-void HandleTable::Clear() {
-    for (u16 i = 0; i < table_size; ++i) {
-        generations[i] = static_cast<u16>(i + 1);
-        objects[i] = nullptr;
-    }
-    next_free_slot = 0;
-}
-
-} // namespace Kernel

src/core/hle/kernel/handle_table.h

@@ -1,144 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <array>
-#include <cstddef>
-#include <memory>
-
-#include "common/common_types.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/result.h"
-
-namespace Kernel {
-
-class KernelCore;
-
-enum KernelHandle : Handle {
-    InvalidHandle = 0,
-    CurrentThread = 0xFFFF8000,
-    CurrentProcess = 0xFFFF8001,
-};
-
-/**
- * This class allows the creation of Handles, which are references to objects that can be tested
- * for validity and looked up. Here they are used to pass references to kernel objects to/from the
- * emulated process. it has been designed so that it follows the same handle format and has
- * approximately the same restrictions as the handle manager in the CTR-OS.
- *
- * Handles contain two sub-fields: a slot index (bits 31:15) and a generation value (bits 14:0).
- * The slot index is used to index into the arrays in this class to access the data corresponding
- * to the Handle.
- *
- * To prevent accidental use of a freed Handle whose slot has already been reused, a global counter
- * is kept and incremented every time a Handle is created. This is the Handle's "generation". The
- * value of the counter is stored into the Handle as well as in the handle table (in the
- * "generations" array). When looking up a handle, the Handle's generation must match with the
- * value stored on the class, otherwise the Handle is considered invalid.
- *
- * To find free slots when allocating a Handle without needing to scan the entire object array, the
- * generations field of unallocated slots is re-purposed as a linked list of indices to free slots.
- * When a Handle is created, an index is popped off the list and used for the new Handle. When it
- * is destroyed, it is again pushed onto the list to be re-used by the next allocation. It is
- * likely that this allocation strategy differs from the one used in CTR-OS, but this hasn't been
- * verified and isn't likely to cause any problems.
- */
-class HandleTable final : NonCopyable {
-public:
-    /// This is the maximum limit of handles allowed per process in Horizon
-    static constexpr std::size_t MAX_COUNT = 1024;
-
-    explicit HandleTable(KernelCore& kernel);
-    ~HandleTable();
-
-    /**
-     * Sets the number of handles that may be in use at one time
-     * for this handle table.
-     *
-     * @param handle_table_size The desired size to limit the handle table to.
-     *
-     * @returns an error code indicating if initialization was successful.
-     *          If initialization was not successful, then ERR_OUT_OF_MEMORY
-     *          will be returned.
-     *
-     * @pre handle_table_size must be within the range [0, 1024]
-     */
-    ResultCode SetSize(s32 handle_table_size);
-
-    /**
-     * Allocates a handle for the given object.
-     * @return The created Handle or one of the following errors:
-     *           - `ERR_HANDLE_TABLE_FULL`: the maximum number of handles has been exceeded.
-     */
-    ResultVal<Handle> Create(std::shared_ptr<Object> obj);
-
-    /**
-     * Returns a new handle that points to the same object as the passed in handle.
-     * @return The duplicated Handle or one of the following errors:
-     *           - `ERR_INVALID_HANDLE`: an invalid handle was passed in.
-     *           - Any errors returned by `Create()`.
-     */
-    ResultVal<Handle> Duplicate(Handle handle);
-
-    /**
-     * Closes a handle, removing it from the table and decreasing the object's ref-count.
-     * @return `RESULT_SUCCESS` or one of the following errors:
-     *           - `ERR_INVALID_HANDLE`: an invalid handle was passed in.
-     */
-    ResultCode Close(Handle handle);
-
-    /// Checks if a handle is valid and points to an existing object.
-    bool IsValid(Handle handle) const;
-
-    /**
-     * Looks up a handle.
-     * @return Pointer to the looked-up object, or `nullptr` if the handle is not valid.
-     */
-    std::shared_ptr<Object> GetGeneric(Handle handle) const;
-
-    /**
-     * Looks up a handle while verifying its type.
-     * @return Pointer to the looked-up object, or `nullptr` if the handle is not valid or its
-     *         type differs from the requested one.
-     */
-    template <class T>
-    std::shared_ptr<T> Get(Handle handle) const {
-        return DynamicObjectCast<T>(GetGeneric(handle));
-    }
-
-    /// Closes all handles held in this table.
-    void Clear();
-
-private:
-    /// Stores the Object referenced by the handle or null if the slot is empty.
-    std::array<std::shared_ptr<Object>, MAX_COUNT> objects;
-
-    /**
-     * The value of `next_generation` when the handle was created, used to check for validity. For
-     * empty slots, contains the index of the next free slot in the list.
-     */
-    std::array<u16, MAX_COUNT> generations;
-
-    /**
-     * The limited size of the handle table. This can be specified by process
-     * capabilities in order to restrict the overall number of handles that
-     * can be created in a process instance
-     */
-    u16 table_size = static_cast<u16>(MAX_COUNT);
-
-    /**
-     * Global counter of the number of created handles. Stored in `generations` when a handle is
-     * created, and wraps around to 1 when it hits 0x8000.
-     */
-    u16 next_generation = 1;
-
-    /// Head of the free slots linked list.
-    u16 next_free_slot = 0;
-
-    /// Underlying kernel instance that this handle table operates under.
-    KernelCore& kernel;
-};
-
-} // namespace Kernel

src/core/hle/kernel/hle_ipc.cpp

@@ -14,17 +14,16 @@
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "core/hle/ipc_helpers.h"
-#include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_handle_table.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
+#include "core/hle/kernel/k_server_session.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/process.h"
-#include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/memory.h"
@@ -35,28 +34,23 @@ SessionRequestHandler::SessionRequestHandler() = default;
 
 SessionRequestHandler::~SessionRequestHandler() = default;
 
-void SessionRequestHandler::ClientConnected(std::shared_ptr<ServerSession> server_session) {
-    server_session->SetHleHandler(shared_from_this());
-    connected_sessions.push_back(std::move(server_session));
+void SessionRequestHandler::ClientConnected(KServerSession* session) {
+    session->SetHleHandler(shared_from_this());
 }
 
-void SessionRequestHandler::ClientDisconnected(
-    const std::shared_ptr<ServerSession>& server_session) {
-    server_session->SetHleHandler(nullptr);
-    boost::range::remove_erase(connected_sessions, server_session);
+void SessionRequestHandler::ClientDisconnected(KServerSession* session) {
+    session->SetHleHandler(nullptr);
 }
 
-HLERequestContext::HLERequestContext(KernelCore& kernel, Core::Memory::Memory& memory,
-                                     std::shared_ptr<ServerSession> server_session,
-                                     std::shared_ptr<KThread> thread)
-    : server_session(std::move(server_session)),
-      thread(std::move(thread)), kernel{kernel}, memory{memory} {
+HLERequestContext::HLERequestContext(KernelCore& kernel_, Core::Memory::Memory& memory_,
+                                     KServerSession* server_session_, KThread* thread_)
+    : server_session(server_session_), thread(thread_), kernel{kernel_}, memory{memory_} {
     cmd_buf[0] = 0;
 }
 
 HLERequestContext::~HLERequestContext() = default;
 
-void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_le* src_cmdbuf,
+void HLERequestContext::ParseCommandBuffer(const KHandleTable& handle_table, u32_le* src_cmdbuf,
                                            bool incoming) {
     IPC::RequestParser rp(src_cmdbuf);
     command_header = rp.PopRaw<IPC::CommandHeader>();
@@ -77,12 +71,12 @@ void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_
             for (u32 handle = 0; handle < handle_descriptor_header->num_handles_to_copy; ++handle) {
                 const u32 copy_handle{rp.Pop<Handle>()};
                 copy_handles.push_back(copy_handle);
-                copy_objects.push_back(handle_table.GetGeneric(copy_handle));
+                copy_objects.push_back(handle_table.GetObject(copy_handle).GetPointerUnsafe());
             }
             for (u32 handle = 0; handle < handle_descriptor_header->num_handles_to_move; ++handle) {
                 const u32 move_handle{rp.Pop<Handle>()};
                 move_handles.push_back(move_handle);
-                move_objects.push_back(handle_table.GetGeneric(move_handle));
+                move_objects.push_back(handle_table.GetObject(move_handle).GetPointerUnsafe());
             }
         } else {
             // For responses we just ignore the handles, they're empty and will be populated when
@@ -169,7 +163,7 @@ void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_
     rp.Skip(1, false); // The command is actually an u64, but we don't use the high part.
 }
 
-ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const HandleTable& handle_table,
+ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const KHandleTable& handle_table,
                                                                 u32_le* src_cmdbuf) {
     ParseCommandBuffer(handle_table, src_cmdbuf, true);
     if (command_header->type == IPC::CommandType::Close) {
@@ -223,12 +217,12 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(KThread& thread) {
         // for specific values in each of these descriptors.
         for (auto& object : copy_objects) {
             ASSERT(object != nullptr);
-            dst_cmdbuf[current_offset++] = handle_table.Create(object).Unwrap();
+            R_TRY(handle_table.Add(&dst_cmdbuf[current_offset++], object));
         }
 
         for (auto& object : move_objects) {
             ASSERT(object != nullptr);
-            dst_cmdbuf[current_offset++] = handle_table.Create(object).Unwrap();
+            R_TRY(handle_table.Add(&dst_cmdbuf[current_offset++], object));
         }
     }
 

src/core/hle/kernel/hle_ipc.h

@@ -16,7 +16,8 @@
 #include "common/concepts.h"
 #include "common/swap.h"
 #include "core/hle/ipc.h"
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/svc_common.h"
 
 union ResultCode;
 
@@ -35,13 +36,14 @@ class ServiceFrameworkBase;
 namespace Kernel {
 
 class Domain;
-class HandleTable;
 class HLERequestContext;
 class KernelCore;
-class Process;
-class ServerSession;
+class KHandleTable;
+class KProcess;
+class KServerSession;
 class KThread;
 class KReadableEvent;
+class KSession;
 class KWritableEvent;
 
 enum class ThreadWakeupReason;
@@ -71,20 +73,14 @@ public:
      * associated ServerSession alive for the duration of the connection.
      * @param server_session Owning pointer to the ServerSession associated with the connection.
      */
-    void ClientConnected(std::shared_ptr<ServerSession> server_session);
+    void ClientConnected(KServerSession* session);
 
     /**
      * Signals that a client has just disconnected from this HLE handler and releases the
      * associated ServerSession.
      * @param server_session ServerSession associated with the connection.
      */
-    void ClientDisconnected(const std::shared_ptr<ServerSession>& server_session);
-
-protected:
-    /// List of sessions that are connected to this handler.
-    /// A ServerSession whose server endpoint is an HLE implementation is kept alive by this list
-    /// for the duration of the connection.
-    std::vector<std::shared_ptr<ServerSession>> connected_sessions;
+    void ClientDisconnected(KServerSession* session);
 };
 
 /**
@@ -109,8 +105,7 @@ protected:
 class HLERequestContext {
 public:
     explicit HLERequestContext(KernelCore& kernel, Core::Memory::Memory& memory,
-                               std::shared_ptr<ServerSession> session,
-                               std::shared_ptr<KThread> thread);
+                               KServerSession* session, KThread* thread);
     ~HLERequestContext();
 
     /// Returns a pointer to the IPC command buffer for this request.
@@ -122,12 +117,12 @@ public:
      * Returns the session through which this request was made. This can be used as a map key to
      * access per-client data on services.
      */
-    const std::shared_ptr<Kernel::ServerSession>& Session() const {
+    Kernel::KServerSession* Session() {
         return server_session;
     }
 
     /// Populates this context with data from the requesting process/thread.
-    ResultCode PopulateFromIncomingCommandBuffer(const HandleTable& handle_table,
+    ResultCode PopulateFromIncomingCommandBuffer(const KHandleTable& handle_table,
                                                  u32_le* src_cmdbuf);
 
     /// Writes data from this context back to the requesting process/thread.
@@ -218,22 +213,12 @@ public:
         return move_handles.at(index);
     }
 
-    template <typename T>
-    std::shared_ptr<T> GetCopyObject(std::size_t index) {
-        return DynamicObjectCast<T>(copy_objects.at(index));
-    }
-
-    template <typename T>
-    std::shared_ptr<T> GetMoveObject(std::size_t index) {
-        return DynamicObjectCast<T>(move_objects.at(index));
+    void AddMoveObject(KAutoObject* object) {
+        move_objects.emplace_back(object);
     }
 
-    void AddMoveObject(std::shared_ptr<Object> object) {
-        move_objects.emplace_back(std::move(object));
-    }
-
-    void AddCopyObject(std::shared_ptr<Object> object) {
-        copy_objects.emplace_back(std::move(object));
+    void AddCopyObject(KAutoObject* object) {
+        copy_objects.emplace_back(object);
     }
 
     void AddDomainObject(std::shared_ptr<SessionRequestHandler> object) {
@@ -276,10 +261,6 @@ public:
         return *thread;
     }
 
-    const KThread& GetThread() const {
-        return *thread;
-    }
-
     bool IsThreadWaiting() const {
         return is_thread_waiting;
     }
@@ -287,16 +268,17 @@ public:
 private:
     friend class IPC::ResponseBuilder;
 
-    void ParseCommandBuffer(const HandleTable& handle_table, u32_le* src_cmdbuf, bool incoming);
+    void ParseCommandBuffer(const KHandleTable& handle_table, u32_le* src_cmdbuf, bool incoming);
 
     std::array<u32, IPC::COMMAND_BUFFER_LENGTH> cmd_buf;
-    std::shared_ptr<Kernel::ServerSession> server_session;
-    std::shared_ptr<KThread> thread;
+    Kernel::KServerSession* server_session{};
+    KThread* thread;
+
     // TODO(yuriks): Check common usage of this and optimize size accordingly
     boost::container::small_vector<Handle, 8> move_handles;
     boost::container::small_vector<Handle, 8> copy_handles;
-    boost::container::small_vector<std::shared_ptr<Object>, 8> move_objects;
-    boost::container::small_vector<std::shared_ptr<Object>, 8> copy_objects;
+    boost::container::small_vector<KAutoObject*, 8> move_objects;
+    boost::container::small_vector<KAutoObject*, 8> copy_objects;
     boost::container::small_vector<std::shared_ptr<SessionRequestHandler>, 8> domain_objects;
 
     std::optional<IPC::CommandHeader> command_header;

src/core/hle/kernel/init/init_slab_setup.cpp

@@ -0,0 +1,192 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/core.h"
+#include "core/hardware_properties.h"
+#include "core/hle/kernel/init/init_slab_setup.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_memory_layout.h"
+#include "core/hle/kernel/k_memory_manager.h"
+#include "core/hle/kernel/k_port.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/k_resource_limit.h"
+#include "core/hle/kernel/k_session.h"
+#include "core/hle/kernel/k_shared_memory.h"
+#include "core/hle/kernel/k_system_control.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_transfer_memory.h"
+#include "core/hle/kernel/memory_types.h"
+#include "core/memory.h"
+
+namespace Kernel::Init {
+
+#define SLAB_COUNT(CLASS) kernel.SlabResourceCounts().num_##CLASS
+
+#define FOREACH_SLAB_TYPE(HANDLER, ...)                                                            \
+    HANDLER(KProcess, (SLAB_COUNT(KProcess)), ##__VA_ARGS__)                                       \
+    HANDLER(KThread, (SLAB_COUNT(KThread)), ##__VA_ARGS__)                                         \
+    HANDLER(KEvent, (SLAB_COUNT(KEvent)), ##__VA_ARGS__)                                           \
+    HANDLER(KPort, (SLAB_COUNT(KPort)), ##__VA_ARGS__)                                             \
+    HANDLER(KSharedMemory, (SLAB_COUNT(KSharedMemory)), ##__VA_ARGS__)                             \
+    HANDLER(KTransferMemory, (SLAB_COUNT(KTransferMemory)), ##__VA_ARGS__)                         \
+    HANDLER(KSession, (SLAB_COUNT(KSession)), ##__VA_ARGS__)                                       \
+    HANDLER(KResourceLimit, (SLAB_COUNT(KResourceLimit)), ##__VA_ARGS__)
+
+namespace {
+
+#define DEFINE_SLAB_TYPE_ENUM_MEMBER(NAME, COUNT, ...) KSlabType_##NAME,
+
+enum KSlabType : u32 {
+    FOREACH_SLAB_TYPE(DEFINE_SLAB_TYPE_ENUM_MEMBER) KSlabType_Count,
+};
+
+#undef DEFINE_SLAB_TYPE_ENUM_MEMBER
+
+// Constexpr counts.
+constexpr size_t SlabCountKProcess = 80;
+constexpr size_t SlabCountKThread = 800;
+constexpr size_t SlabCountKEvent = 700;
+constexpr size_t SlabCountKInterruptEvent = 100;
+constexpr size_t SlabCountKPort = 256 + 0x20; // Extra 0x20 ports over Nintendo for homebrew.
+constexpr size_t SlabCountKSharedMemory = 80;
+constexpr size_t SlabCountKTransferMemory = 200;
+constexpr size_t SlabCountKCodeMemory = 10;
+constexpr size_t SlabCountKDeviceAddressSpace = 300;
+constexpr size_t SlabCountKSession = 933;
+constexpr size_t SlabCountKLightSession = 100;
+constexpr size_t SlabCountKObjectName = 7;
+constexpr size_t SlabCountKResourceLimit = 5;
+constexpr size_t SlabCountKDebug = Core::Hardware::NUM_CPU_CORES;
+constexpr size_t SlabCountKAlpha = 1;
+constexpr size_t SlabCountKBeta = 6;
+
+constexpr size_t SlabCountExtraKThread = 160;
+
+template <typename T>
+VAddr InitializeSlabHeap(Core::System& system, KMemoryLayout& memory_layout, VAddr address,
+                         size_t num_objects) {
+    const size_t size = Common::AlignUp(sizeof(T) * num_objects, alignof(void*));
+    VAddr start = Common::AlignUp(address, alignof(T));
+
+    if (size > 0) {
+        const KMemoryRegion* region = memory_layout.FindVirtual(start + size - 1);
+        ASSERT(region != nullptr);
+        ASSERT(region->IsDerivedFrom(KMemoryRegionType_KernelSlab));
+        T::InitializeSlabHeap(system.Kernel(), system.Memory().GetKernelBuffer(start, size), size);
+    }
+
+    return start + size;
+}
+
+} // namespace
+
+KSlabResourceCounts KSlabResourceCounts::CreateDefault() {
+    return {
+        .num_KProcess = SlabCountKProcess,
+        .num_KThread = SlabCountKThread,
+        .num_KEvent = SlabCountKEvent,
+        .num_KInterruptEvent = SlabCountKInterruptEvent,
+        .num_KPort = SlabCountKPort,
+        .num_KSharedMemory = SlabCountKSharedMemory,
+        .num_KTransferMemory = SlabCountKTransferMemory,
+        .num_KCodeMemory = SlabCountKCodeMemory,
+        .num_KDeviceAddressSpace = SlabCountKDeviceAddressSpace,
+        .num_KSession = SlabCountKSession,
+        .num_KLightSession = SlabCountKLightSession,
+        .num_KObjectName = SlabCountKObjectName,
+        .num_KResourceLimit = SlabCountKResourceLimit,
+        .num_KDebug = SlabCountKDebug,
+        .num_KAlpha = SlabCountKAlpha,
+        .num_KBeta = SlabCountKBeta,
+    };
+}
+
+void InitializeSlabResourceCounts(KernelCore& kernel) {
+    kernel.SlabResourceCounts() = KSlabResourceCounts::CreateDefault();
+    if (KSystemControl::Init::ShouldIncreaseThreadResourceLimit()) {
+        kernel.SlabResourceCounts().num_KThread += SlabCountExtraKThread;
+    }
+}
+
+size_t CalculateTotalSlabHeapSize(const KernelCore& kernel) {
+    size_t size = 0;
+
+#define ADD_SLAB_SIZE(NAME, COUNT, ...)                                                            \
+    {                                                                                              \
+        size += alignof(NAME);                                                                     \
+        size += Common::AlignUp(sizeof(NAME) * (COUNT), alignof(void*));                           \
+    };
+
+    // Add the size required for each slab.
+    FOREACH_SLAB_TYPE(ADD_SLAB_SIZE)
+
+#undef ADD_SLAB_SIZE
+
+    // Add the reserved size.
+    size += KernelSlabHeapGapsSize;
+
+    return size;
+}
+
+void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout) {
+    auto& kernel = system.Kernel();
+
+    // Get the start of the slab region, since that's where we'll be working.
+    VAddr address = memory_layout.GetSlabRegionAddress();
+
+    // Initialize slab type array to be in sorted order.
+    std::array<KSlabType, KSlabType_Count> slab_types;
+    for (size_t i = 0; i < slab_types.size(); i++) {
+        slab_types[i] = static_cast<KSlabType>(i);
+    }
+
+    // N shuffles the slab type array with the following simple algorithm.
+    for (size_t i = 0; i < slab_types.size(); i++) {
+        const size_t rnd = KSystemControl::GenerateRandomRange(0, slab_types.size() - 1);
+        std::swap(slab_types[i], slab_types[rnd]);
+    }
+
+    // Create an array to represent the gaps between the slabs.
+    const size_t total_gap_size = KernelSlabHeapGapsSize;
+    std::array<size_t, slab_types.size()> slab_gaps;
+    for (size_t i = 0; i < slab_gaps.size(); i++) {
+        // Note: This is an off-by-one error from Nintendo's intention, because GenerateRandomRange
+        // is inclusive. However, Nintendo also has the off-by-one error, and it's "harmless", so we
+        // will include it ourselves.
+        slab_gaps[i] = KSystemControl::GenerateRandomRange(0, total_gap_size);
+    }
+
+    // Sort the array, so that we can treat differences between values as offsets to the starts of
+    // slabs.
+    for (size_t i = 1; i < slab_gaps.size(); i++) {
+        for (size_t j = i; j > 0 && slab_gaps[j - 1] > slab_gaps[j]; j--) {
+            std::swap(slab_gaps[j], slab_gaps[j - 1]);
+        }
+    }
+
+    for (size_t i = 0; i < slab_types.size(); i++) {
+        // Add the random gap to the address.
+        address += (i == 0) ? slab_gaps[0] : slab_gaps[i] - slab_gaps[i - 1];
+
+#define INITIALIZE_SLAB_HEAP(NAME, COUNT, ...)                                                     \
+    case KSlabType_##NAME:                                                                         \
+        address = InitializeSlabHeap<NAME>(system, memory_layout, address, COUNT);                 \
+        break;
+
+        // Initialize the slabheap.
+        switch (slab_types[i]) {
+            // For each of the slab types, we want to initialize that heap.
+            FOREACH_SLAB_TYPE(INITIALIZE_SLAB_HEAP)
+            // If we somehow get an invalid type, abort.
+        default:
+            UNREACHABLE();
+        }
+    }
+}
+
+} // namespace Kernel::Init

src/core/hle/kernel/init/init_slab_setup.h

@@ -0,0 +1,43 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Core {
+class System;
+} // namespace Core
+
+namespace Kernel {
+class KernelCore;
+class KMemoryLayout;
+} // namespace Kernel
+
+namespace Kernel::Init {
+
+struct KSlabResourceCounts {
+    static KSlabResourceCounts CreateDefault();
+
+    size_t num_KProcess;
+    size_t num_KThread;
+    size_t num_KEvent;
+    size_t num_KInterruptEvent;
+    size_t num_KPort;
+    size_t num_KSharedMemory;
+    size_t num_KTransferMemory;
+    size_t num_KCodeMemory;
+    size_t num_KDeviceAddressSpace;
+    size_t num_KSession;
+    size_t num_KLightSession;
+    size_t num_KObjectName;
+    size_t num_KResourceLimit;
+    size_t num_KDebug;
+    size_t num_KAlpha;
+    size_t num_KBeta;
+};
+
+void InitializeSlabResourceCounts(KernelCore& kernel);
+size_t CalculateTotalSlabHeapSize(const KernelCore& kernel);
+void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout);
+
+} // namespace Kernel::Init

src/core/hle/kernel/k_auto_object.cpp

@@ -0,0 +1,14 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_auto_object.h"
+
+namespace Kernel {
+
+KAutoObject* KAutoObject::Create(KAutoObject* obj) {
+    obj->m_ref_count = 1;
+    return obj;
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_auto_object.h

@@ -0,0 +1,306 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <atomic>
+#include <string>
+
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/intrusive_red_black_tree.h"
+#include "core/hle/kernel/k_class_token.h"
+
+namespace Kernel {
+
+class KernelCore;
+class KProcess;
+
+#define KERNEL_AUTOOBJECT_TRAITS(CLASS, BASE_CLASS)                                                \
+    YUZU_NON_COPYABLE(CLASS);                                                                      \
+    YUZU_NON_MOVEABLE(CLASS);                                                                      \
+                                                                                                   \
+private:                                                                                           \
+    friend class ::Kernel::KClassTokenGenerator;                                                   \
+    static constexpr inline auto ObjectType = ::Kernel::KClassTokenGenerator::ObjectType::CLASS;   \
+    static constexpr inline const char* const TypeName = #CLASS;                                   \
+    static constexpr inline ClassTokenType ClassToken() {                                          \
+        return ::Kernel::ClassToken<CLASS>;                                                        \
+    }                                                                                              \
+                                                                                                   \
+public:                                                                                            \
+    using BaseClass = BASE_CLASS;                                                                  \
+    static constexpr TypeObj GetStaticTypeObj() {                                                  \
+        constexpr ClassTokenType Token = ClassToken();                                             \
+        return TypeObj(TypeName, Token);                                                           \
+    }                                                                                              \
+    static constexpr const char* GetStaticTypeName() {                                             \
+        return TypeName;                                                                           \
+    }                                                                                              \
+    virtual TypeObj GetTypeObj() const {                                                           \
+        return GetStaticTypeObj();                                                                 \
+    }                                                                                              \
+    virtual const char* GetTypeName() const {                                                      \
+        return GetStaticTypeName();                                                                \
+    }                                                                                              \
+                                                                                                   \
+private:                                                                                           \
+    constexpr bool operator!=(const TypeObj& rhs)
+
+class KAutoObject {
+protected:
+    class TypeObj {
+    public:
+        constexpr explicit TypeObj(const char* n, ClassTokenType tok)
+            : m_name(n), m_class_token(tok) {}
+
+        constexpr const char* GetName() const {
+            return m_name;
+        }
+        constexpr ClassTokenType GetClassToken() const {
+            return m_class_token;
+        }
+
+        constexpr bool operator==(const TypeObj& rhs) const {
+            return this->GetClassToken() == rhs.GetClassToken();
+        }
+
+        constexpr bool operator!=(const TypeObj& rhs) const {
+            return this->GetClassToken() != rhs.GetClassToken();
+        }
+
+        constexpr bool IsDerivedFrom(const TypeObj& rhs) const {
+            return (this->GetClassToken() | rhs.GetClassToken()) == this->GetClassToken();
+        }
+
+    private:
+        const char* m_name;
+        ClassTokenType m_class_token;
+    };
+
+private:
+    KERNEL_AUTOOBJECT_TRAITS(KAutoObject, KAutoObject);
+
+public:
+    explicit KAutoObject(KernelCore& kernel_) : kernel(kernel_) {}
+    virtual ~KAutoObject() = default;
+
+    static KAutoObject* Create(KAutoObject* ptr);
+
+    // Destroy is responsible for destroying the auto object's resources when ref_count hits zero.
+    virtual void Destroy() {
+        UNIMPLEMENTED();
+    }
+
+    // Finalize is responsible for cleaning up resource, but does not destroy the object.
+    virtual void Finalize() {}
+
+    virtual KProcess* GetOwner() const {
+        return nullptr;
+    }
+
+    u32 GetReferenceCount() const {
+        return m_ref_count.load();
+    }
+
+    bool IsDerivedFrom(const TypeObj& rhs) const {
+        return this->GetTypeObj().IsDerivedFrom(rhs);
+    }
+
+    bool IsDerivedFrom(const KAutoObject& rhs) const {
+        return this->IsDerivedFrom(rhs.GetTypeObj());
+    }
+
+    template <typename Derived>
+    Derived DynamicCast() {
+        static_assert(std::is_pointer_v<Derived>);
+        using DerivedType = std::remove_pointer_t<Derived>;
+
+        if (this->IsDerivedFrom(DerivedType::GetStaticTypeObj())) {
+            return static_cast<Derived>(this);
+        } else {
+            return nullptr;
+        }
+    }
+
+    template <typename Derived>
+    const Derived DynamicCast() const {
+        static_assert(std::is_pointer_v<Derived>);
+        using DerivedType = std::remove_pointer_t<Derived>;
+
+        if (this->IsDerivedFrom(DerivedType::GetStaticTypeObj())) {
+            return static_cast<Derived>(this);
+        } else {
+            return nullptr;
+        }
+    }
+
+    bool Open() {
+        // Atomically increment the reference count, only if it's positive.
+        u32 cur_ref_count = m_ref_count.load(std::memory_order_acquire);
+        do {
+            if (cur_ref_count == 0) {
+                return false;
+            }
+            ASSERT(cur_ref_count < cur_ref_count + 1);
+        } while (!m_ref_count.compare_exchange_weak(cur_ref_count, cur_ref_count + 1,
+                                                    std::memory_order_relaxed));
+
+        return true;
+    }
+
+    void Close() {
+        // Atomically decrement the reference count, not allowing it to become negative.
+        u32 cur_ref_count = m_ref_count.load(std::memory_order_acquire);
+        do {
+            ASSERT(cur_ref_count > 0);
+        } while (!m_ref_count.compare_exchange_weak(cur_ref_count, cur_ref_count - 1,
+                                                    std::memory_order_relaxed));
+
+        // If ref count hits zero, destroy the object.
+        if (cur_ref_count - 1 == 0) {
+            this->Destroy();
+        }
+    }
+
+protected:
+    KernelCore& kernel;
+    std::string name;
+
+private:
+    std::atomic<u32> m_ref_count{};
+};
+
+class KAutoObjectWithListContainer;
+
+class KAutoObjectWithList : public KAutoObject {
+public:
+    explicit KAutoObjectWithList(KernelCore& kernel_) : KAutoObject(kernel_), kernel(kernel_) {}
+
+    static int Compare(const KAutoObjectWithList& lhs, const KAutoObjectWithList& rhs) {
+        const u64 lid = lhs.GetId();
+        const u64 rid = rhs.GetId();
+
+        if (lid < rid) {
+            return -1;
+        } else if (lid > rid) {
+            return 1;
+        } else {
+            return 0;
+        }
+    }
+
+public:
+    virtual u64 GetId() const {
+        return reinterpret_cast<u64>(this);
+    }
+
+    virtual const std::string& GetName() const {
+        return name;
+    }
+
+private:
+    friend class KAutoObjectWithListContainer;
+
+private:
+    Common::IntrusiveRedBlackTreeNode list_node;
+
+protected:
+    KernelCore& kernel;
+};
+
+template <typename T>
+class KScopedAutoObject {
+    YUZU_NON_COPYABLE(KScopedAutoObject);
+
+public:
+    constexpr KScopedAutoObject() = default;
+
+    constexpr KScopedAutoObject(T* o) : m_obj(o) {
+        if (m_obj != nullptr) {
+            m_obj->Open();
+        }
+    }
+
+    ~KScopedAutoObject() {
+        if (m_obj != nullptr) {
+            m_obj->Close();
+        }
+        m_obj = nullptr;
+    }
+
+    template <typename U>
+    requires(std::derived_from<T, U> ||
+             std::derived_from<U, T>) constexpr KScopedAutoObject(KScopedAutoObject<U>&& rhs) {
+        if constexpr (std::derived_from<U, T>) {
+            // Upcast.
+            m_obj = rhs.m_obj;
+            rhs.m_obj = nullptr;
+        } else {
+            // Downcast.
+            T* derived = nullptr;
+            if (rhs.m_obj != nullptr) {
+                derived = rhs.m_obj->template DynamicCast<T*>();
+                if (derived == nullptr) {
+                    rhs.m_obj->Close();
+                }
+            }
+
+            m_obj = derived;
+            rhs.m_obj = nullptr;
+        }
+    }
+
+    constexpr KScopedAutoObject<T>& operator=(KScopedAutoObject<T>&& rhs) {
+        rhs.Swap(*this);
+        return *this;
+    }
+
+    constexpr T* operator->() {
+        return m_obj;
+    }
+    constexpr T& operator*() {
+        return *m_obj;
+    }
+
+    constexpr void Reset(T* o) {
+        KScopedAutoObject(o).Swap(*this);
+    }
+
+    constexpr T* GetPointerUnsafe() {
+        return m_obj;
+    }
+
+    constexpr T* GetPointerUnsafe() const {
+        return m_obj;
+    }
+
+    constexpr T* ReleasePointerUnsafe() {
+        T* ret = m_obj;
+        m_obj = nullptr;
+        return ret;
+    }
+
+    constexpr bool IsNull() const {
+        return m_obj == nullptr;
+    }
+    constexpr bool IsNotNull() const {
+        return m_obj != nullptr;
+    }
+
+private:
+    template <typename U>
+    friend class KScopedAutoObject;
+
+private:
+    T* m_obj{};
+
+private:
+    constexpr void Swap(KScopedAutoObject& rhs) noexcept {
+        std::swap(m_obj, rhs.m_obj);
+    }
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_auto_object_container.cpp

@@ -0,0 +1,28 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_auto_object_container.h"
+
+namespace Kernel {
+
+void KAutoObjectWithListContainer::Register(KAutoObjectWithList* obj) {
+    KScopedLightLock lk(m_lock);
+
+    m_object_list.insert(*obj);
+}
+
+void KAutoObjectWithListContainer::Unregister(KAutoObjectWithList* obj) {
+    KScopedLightLock lk(m_lock);
+
+    m_object_list.erase(m_object_list.iterator_to(*obj));
+}
+
+size_t KAutoObjectWithListContainer::GetOwnedCount(KProcess* owner) {
+    KScopedLightLock lk(m_lock);
+
+    return std::count_if(m_object_list.begin(), m_object_list.end(),
+                         [&](const auto& obj) { return obj.GetOwner() == owner; });
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_auto_object_container.h

@@ -0,0 +1,70 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <atomic>
+
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/intrusive_red_black_tree.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_light_lock.h"
+
+namespace Kernel {
+
+class KernelCore;
+class KProcess;
+
+class KAutoObjectWithListContainer {
+    YUZU_NON_COPYABLE(KAutoObjectWithListContainer);
+    YUZU_NON_MOVEABLE(KAutoObjectWithListContainer);
+
+public:
+    using ListType = Common::IntrusiveRedBlackTreeMemberTraits<
+        &KAutoObjectWithList::list_node>::TreeType<KAutoObjectWithList>;
+
+public:
+    class ListAccessor : public KScopedLightLock {
+    public:
+        explicit ListAccessor(KAutoObjectWithListContainer* container)
+            : KScopedLightLock(container->m_lock), m_list(container->m_object_list) {}
+        explicit ListAccessor(KAutoObjectWithListContainer& container)
+            : KScopedLightLock(container.m_lock), m_list(container.m_object_list) {}
+
+        typename ListType::iterator begin() const {
+            return m_list.begin();
+        }
+
+        typename ListType::iterator end() const {
+            return m_list.end();
+        }
+
+        typename ListType::iterator find(typename ListType::const_reference ref) const {
+            return m_list.find(ref);
+        }
+
+    private:
+        ListType& m_list;
+    };
+
+    friend class ListAccessor;
+
+public:
+    KAutoObjectWithListContainer(KernelCore& kernel) : m_lock(kernel), m_object_list() {}
+
+    void Initialize() {}
+    void Finalize() {}
+
+    void Register(KAutoObjectWithList* obj);
+    void Unregister(KAutoObjectWithList* obj);
+    size_t GetOwnedCount(KProcess* owner);
+
+private:
+    KLightLock m_lock;
+    ListType m_object_list;
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_class_token.cpp

@@ -0,0 +1,133 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_class_token.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_port.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_resource_limit.h"
+#include "core/hle/kernel/k_server_port.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/k_session.h"
+#include "core/hle/kernel/k_shared_memory.h"
+#include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_transfer_memory.h"
+#include "core/hle/kernel/k_writable_event.h"
+
+namespace Kernel {
+
+// Ensure that we generate correct class tokens for all types.
+
+// Ensure that the absolute token values are correct.
+static_assert(ClassToken<KAutoObject> == 0b00000000'00000000);
+static_assert(ClassToken<KSynchronizationObject> == 0b00000000'00000001);
+static_assert(ClassToken<KReadableEvent> == 0b00000000'00000011);
+// static_assert(ClassToken<KInterruptEvent> == 0b00000111'00000011);
+// static_assert(ClassToken<KDebug> == 0b00001011'00000001);
+static_assert(ClassToken<KThread> == 0b00010011'00000001);
+static_assert(ClassToken<KServerPort> == 0b00100011'00000001);
+static_assert(ClassToken<KServerSession> == 0b01000011'00000001);
+static_assert(ClassToken<KClientPort> == 0b10000011'00000001);
+static_assert(ClassToken<KClientSession> == 0b00001101'00000000);
+static_assert(ClassToken<KProcess> == 0b00010101'00000001);
+static_assert(ClassToken<KResourceLimit> == 0b00100101'00000000);
+// static_assert(ClassToken<KLightSession> == 0b01000101'00000000);
+static_assert(ClassToken<KPort> == 0b10000101'00000000);
+static_assert(ClassToken<KSession> == 0b00011001'00000000);
+static_assert(ClassToken<KSharedMemory> == 0b00101001'00000000);
+static_assert(ClassToken<KEvent> == 0b01001001'00000000);
+static_assert(ClassToken<KWritableEvent> == 0b10001001'00000000);
+// static_assert(ClassToken<KLightClientSession> == 0b00110001'00000000);
+// static_assert(ClassToken<KLightServerSession> == 0b01010001'00000000);
+static_assert(ClassToken<KTransferMemory> == 0b10010001'00000000);
+// static_assert(ClassToken<KDeviceAddressSpace> == 0b01100001'00000000);
+// static_assert(ClassToken<KSessionRequest> == 0b10100001'00000000);
+// static_assert(ClassToken<KCodeMemory> == 0b11000001'00000000);
+
+// Ensure that the token hierarchy is correct.
+
+// Base classes
+static_assert(ClassToken<KAutoObject> == (0b00000000));
+static_assert(ClassToken<KSynchronizationObject> == (0b00000001 | ClassToken<KAutoObject>));
+static_assert(ClassToken<KReadableEvent> == (0b00000010 | ClassToken<KSynchronizationObject>));
+
+// Final classes
+// static_assert(ClassToken<KInterruptEvent> == ((0b00000111 << 8) | ClassToken<KReadableEvent>));
+// static_assert(ClassToken<KDebug> == ((0b00001011 << 8) | ClassToken<KSynchronizationObject>));
+static_assert(ClassToken<KThread> == ((0b00010011 << 8) | ClassToken<KSynchronizationObject>));
+static_assert(ClassToken<KServerPort> == ((0b00100011 << 8) | ClassToken<KSynchronizationObject>));
+static_assert(ClassToken<KServerSession> ==
+              ((0b01000011 << 8) | ClassToken<KSynchronizationObject>));
+static_assert(ClassToken<KClientPort> == ((0b10000011 << 8) | ClassToken<KSynchronizationObject>));
+static_assert(ClassToken<KClientSession> == ((0b00001101 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KProcess> == ((0b00010101 << 8) | ClassToken<KSynchronizationObject>));
+static_assert(ClassToken<KResourceLimit> == ((0b00100101 << 8) | ClassToken<KAutoObject>));
+// static_assert(ClassToken<KLightSession> == ((0b01000101 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KPort> == ((0b10000101 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KSession> == ((0b00011001 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KSharedMemory> == ((0b00101001 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KEvent> == ((0b01001001 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KWritableEvent> == ((0b10001001 << 8) | ClassToken<KAutoObject>));
+// static_assert(ClassToken<KLightClientSession> == ((0b00110001 << 8) | ClassToken<KAutoObject>));
+// static_assert(ClassToken<KLightServerSession> == ((0b01010001 << 8) | ClassToken<KAutoObject>));
+static_assert(ClassToken<KTransferMemory> == ((0b10010001 << 8) | ClassToken<KAutoObject>));
+// static_assert(ClassToken<KDeviceAddressSpace> == ((0b01100001 << 8) | ClassToken<KAutoObject>));
+// static_assert(ClassToken<KSessionRequest> == ((0b10100001 << 8) | ClassToken<KAutoObject>));
+// static_assert(ClassToken<KCodeMemory> == ((0b11000001 << 8) | ClassToken<KAutoObject>));
+
+// Ensure that the token hierarchy reflects the class hierarchy.
+
+// Base classes.
+static_assert(!std::is_final<KSynchronizationObject>::value &&
+              std::is_base_of<KAutoObject, KSynchronizationObject>::value);
+static_assert(!std::is_final<KReadableEvent>::value &&
+              std::is_base_of<KSynchronizationObject, KReadableEvent>::value);
+
+// Final classes
+// static_assert(std::is_final<KInterruptEvent>::value &&
+//              std::is_base_of<KReadableEvent, KInterruptEvent>::value);
+// static_assert(std::is_final<KDebug>::value &&
+//              std::is_base_of<KSynchronizationObject, KDebug>::value);
+static_assert(std::is_final<KThread>::value &&
+              std::is_base_of<KSynchronizationObject, KThread>::value);
+static_assert(std::is_final<KServerPort>::value &&
+              std::is_base_of<KSynchronizationObject, KServerPort>::value);
+static_assert(std::is_final<KServerSession>::value &&
+              std::is_base_of<KSynchronizationObject, KServerSession>::value);
+static_assert(std::is_final<KClientPort>::value &&
+              std::is_base_of<KSynchronizationObject, KClientPort>::value);
+static_assert(std::is_final<KClientSession>::value &&
+              std::is_base_of<KAutoObject, KClientSession>::value);
+static_assert(std::is_final<KProcess>::value &&
+              std::is_base_of<KSynchronizationObject, KProcess>::value);
+static_assert(std::is_final<KResourceLimit>::value &&
+              std::is_base_of<KAutoObject, KResourceLimit>::value);
+// static_assert(std::is_final<KLightSession>::value &&
+//              std::is_base_of<KAutoObject, KLightSession>::value);
+static_assert(std::is_final<KPort>::value && std::is_base_of<KAutoObject, KPort>::value);
+static_assert(std::is_final<KSession>::value && std::is_base_of<KAutoObject, KSession>::value);
+static_assert(std::is_final<KSharedMemory>::value &&
+              std::is_base_of<KAutoObject, KSharedMemory>::value);
+static_assert(std::is_final<KEvent>::value && std::is_base_of<KAutoObject, KEvent>::value);
+static_assert(std::is_final<KWritableEvent>::value &&
+              std::is_base_of<KAutoObject, KWritableEvent>::value);
+// static_assert(std::is_final<KLightClientSession>::value &&
+//              std::is_base_of<KAutoObject, KLightClientSession>::value);
+// static_assert(std::is_final<KLightServerSession>::value &&
+//              std::is_base_of<KAutoObject, KLightServerSession>::value);
+static_assert(std::is_final<KTransferMemory>::value &&
+              std::is_base_of<KAutoObject, KTransferMemory>::value);
+// static_assert(std::is_final<KDeviceAddressSpace>::value &&
+//              std::is_base_of<KAutoObject, KDeviceAddressSpace>::value);
+// static_assert(std::is_final<KSessionRequest>::value &&
+//              std::is_base_of<KAutoObject, KSessionRequest>::value);
+// static_assert(std::is_final<KCodeMemory>::value &&
+//              std::is_base_of<KAutoObject, KCodeMemory>::value);
+
+} // namespace Kernel

src/core/hle/kernel/k_class_token.h

@@ -0,0 +1,131 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <atomic>
+
+#include "common/assert.h"
+#include "common/bit_util.h"
+#include "common/common_types.h"
+
+namespace Kernel {
+
+class KAutoObject;
+
+class KClassTokenGenerator {
+public:
+    using TokenBaseType = u16;
+
+public:
+    static constexpr size_t BaseClassBits = 8;
+    static constexpr size_t FinalClassBits = (sizeof(TokenBaseType) * CHAR_BIT) - BaseClassBits;
+    // One bit per base class.
+    static constexpr size_t NumBaseClasses = BaseClassBits;
+    // Final classes are permutations of three bits.
+    static constexpr size_t NumFinalClasses = [] {
+        TokenBaseType index = 0;
+        for (size_t i = 0; i < FinalClassBits; i++) {
+            for (size_t j = i + 1; j < FinalClassBits; j++) {
+                for (size_t k = j + 1; k < FinalClassBits; k++) {
+                    index++;
+                }
+            }
+        }
+        return index;
+    }();
+
+private:
+    template <TokenBaseType Index>
+    static constexpr inline TokenBaseType BaseClassToken = 1U << Index;
+
+    template <TokenBaseType Index>
+    static constexpr inline TokenBaseType FinalClassToken = [] {
+        TokenBaseType index = 0;
+        for (size_t i = 0; i < FinalClassBits; i++) {
+            for (size_t j = i + 1; j < FinalClassBits; j++) {
+                for (size_t k = j + 1; k < FinalClassBits; k++) {
+                    if ((index++) == Index) {
+                        return static_cast<TokenBaseType>(((1ULL << i) | (1ULL << j) | (1ULL << k))
+                                                          << BaseClassBits);
+                    }
+                }
+            }
+        }
+    }();
+
+    template <typename T>
+    static constexpr inline TokenBaseType GetClassToken() {
+        static_assert(std::is_base_of<KAutoObject, T>::value);
+        if constexpr (std::is_same<T, KAutoObject>::value) {
+            static_assert(T::ObjectType == ObjectType::KAutoObject);
+            return 0;
+        } else if constexpr (!std::is_final<T>::value) {
+            static_assert(ObjectType::BaseClassesStart <= T::ObjectType &&
+                          T::ObjectType < ObjectType::BaseClassesEnd);
+            constexpr auto ClassIndex = static_cast<TokenBaseType>(T::ObjectType) -
+                                        static_cast<TokenBaseType>(ObjectType::BaseClassesStart);
+            return BaseClassToken<ClassIndex> | GetClassToken<typename T::BaseClass>();
+        } else if constexpr (ObjectType::FinalClassesStart <= T::ObjectType &&
+                             T::ObjectType < ObjectType::FinalClassesEnd) {
+            constexpr auto ClassIndex = static_cast<TokenBaseType>(T::ObjectType) -
+                                        static_cast<TokenBaseType>(ObjectType::FinalClassesStart);
+            return FinalClassToken<ClassIndex> | GetClassToken<typename T::BaseClass>();
+        } else {
+            static_assert(!std::is_same<T, T>::value, "GetClassToken: Invalid Type");
+        }
+    };
+
+public:
+    enum class ObjectType {
+        KAutoObject,
+
+        BaseClassesStart,
+
+        KSynchronizationObject = BaseClassesStart,
+        KReadableEvent,
+
+        BaseClassesEnd,
+
+        FinalClassesStart = BaseClassesEnd,
+
+        KInterruptEvent = FinalClassesStart,
+        KDebug,
+        KThread,
+        KServerPort,
+        KServerSession,
+        KClientPort,
+        KClientSession,
+        KProcess,
+        KResourceLimit,
+        KLightSession,
+        KPort,
+        KSession,
+        KSharedMemory,
+        KEvent,
+        KWritableEvent,
+        KLightClientSession,
+        KLightServerSession,
+        KTransferMemory,
+        KDeviceAddressSpace,
+        KSessionRequest,
+        KCodeMemory,
+
+        // NOTE: True order for these has not been determined yet.
+        KAlpha,
+        KBeta,
+
+        FinalClassesEnd = FinalClassesStart + NumFinalClasses,
+    };
+
+    template <typename T>
+    static constexpr inline TokenBaseType ClassToken = GetClassToken<T>();
+};
+
+using ClassTokenType = KClassTokenGenerator::TokenBaseType;
+
+template <typename T>
+static constexpr inline ClassTokenType ClassToken = KClassTokenGenerator::ClassToken<T>;
+
+} // namespace Kernel

src/core/hle/kernel/k_client_port.cpp

@@ -0,0 +1,125 @@
+// Copyright 2021 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/scope_exit.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_port.h"
+#include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_scoped_resource_reservation.h"
+#include "core/hle/kernel/k_session.h"
+#include "core/hle/kernel/svc_results.h"
+
+namespace Kernel {
+
+KClientPort::KClientPort(KernelCore& kernel) : KSynchronizationObject{kernel} {}
+KClientPort::~KClientPort() = default;
+
+void KClientPort::Initialize(KPort* parent_, s32 max_sessions_, std::string&& name_) {
+    // Set member variables.
+    num_sessions = 0;
+    peak_sessions = 0;
+    parent = parent_;
+    max_sessions = max_sessions_;
+    name = std::move(name_);
+}
+
+void KClientPort::OnSessionFinalized() {
+    KScopedSchedulerLock sl{kernel};
+
+    const auto prev = num_sessions--;
+    if (prev == max_sessions) {
+        this->NotifyAvailable();
+    }
+}
+
+void KClientPort::OnServerClosed() {}
+
+bool KClientPort::IsLight() const {
+    return this->GetParent()->IsLight();
+}
+
+bool KClientPort::IsServerClosed() const {
+    return this->GetParent()->IsServerClosed();
+}
+
+void KClientPort::Destroy() {
+    // Note with our parent that we're closed.
+    parent->OnClientClosed();
+
+    // Close our reference to our parent.
+    parent->Close();
+}
+
+bool KClientPort::IsSignaled() const {
+    return num_sessions < max_sessions;
+}
+
+ResultCode KClientPort::CreateSession(KClientSession** out) {
+    // Reserve a new session from the resource limit.
+    KScopedResourceReservation session_reservation(kernel.CurrentProcess()->GetResourceLimit(),
+                                                   LimitableResource::Sessions);
+    R_UNLESS(session_reservation.Succeeded(), ResultLimitReached);
+
+    // Update the session counts.
+    {
+        // Atomically increment the number of sessions.
+        s32 new_sessions;
+        {
+            const auto max = max_sessions;
+            auto cur_sessions = num_sessions.load(std::memory_order_acquire);
+            do {
+                R_UNLESS(cur_sessions < max, ResultOutOfSessions);
+                new_sessions = cur_sessions + 1;
+            } while (!num_sessions.compare_exchange_weak(cur_sessions, new_sessions,
+                                                         std::memory_order_relaxed));
+        }
+
+        // Atomically update the peak session tracking.
+        {
+            auto peak = peak_sessions.load(std::memory_order_acquire);
+            do {
+                if (peak >= new_sessions) {
+                    break;
+                }
+            } while (!peak_sessions.compare_exchange_weak(peak, new_sessions,
+                                                          std::memory_order_relaxed));
+        }
+    }
+
+    // Create a new session.
+    KSession* session = KSession::Create(kernel);
+    if (session == nullptr) {
+        /* Decrement the session count. */
+        const auto prev = num_sessions--;
+        if (prev == max_sessions) {
+            this->NotifyAvailable();
+        }
+
+        return ResultOutOfResource;
+    }
+
+    // Initialize the session.
+    session->Initialize(this, parent->GetName());
+
+    // Commit the session reservation.
+    session_reservation.Commit();
+
+    // Register the session.
+    KSession::Register(kernel, session);
+    auto session_guard = SCOPE_GUARD({
+        session->GetClientSession().Close();
+        session->GetServerSession().Close();
+    });
+
+    // Enqueue the session with our parent.
+    R_TRY(parent->EnqueueSession(std::addressof(session->GetServerSession())));
+
+    // We succeeded, so set the output.
+    session_guard.Cancel();
+    *out = std::addressof(session->GetClientSession());
+    return RESULT_SUCCESS;
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_client_port.h

@@ -0,0 +1,61 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KClientSession;
+class KernelCore;
+class KPort;
+
+class KClientPort final : public KSynchronizationObject {
+    KERNEL_AUTOOBJECT_TRAITS(KClientPort, KSynchronizationObject);
+
+public:
+    explicit KClientPort(KernelCore& kernel);
+    virtual ~KClientPort() override;
+
+    void Initialize(KPort* parent_, s32 max_sessions_, std::string&& name_);
+    void OnSessionFinalized();
+    void OnServerClosed();
+
+    const KPort* GetParent() const {
+        return parent;
+    }
+
+    s32 GetNumSessions() const {
+        return num_sessions;
+    }
+    s32 GetPeakSessions() const {
+        return peak_sessions;
+    }
+    s32 GetMaxSessions() const {
+        return max_sessions;
+    }
+
+    bool IsLight() const;
+    bool IsServerClosed() const;
+
+    // Overridden virtual functions.
+    virtual void Destroy() override;
+    virtual bool IsSignaled() const override;
+
+    ResultCode CreateSession(KClientSession** out);
+
+private:
+    std::atomic<s32> num_sessions{};
+    std::atomic<s32> peak_sessions{};
+    s32 max_sessions{};
+    KPort* parent{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_client_session.cpp

@@ -0,0 +1,31 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/k_session.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/svc_results.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+KClientSession::KClientSession(KernelCore& kernel) : KAutoObjectWithSlabHeapAndContainer{kernel} {}
+KClientSession::~KClientSession() = default;
+
+void KClientSession::Destroy() {
+    parent->OnClientClosed();
+    parent->Close();
+}
+
+void KClientSession::OnServerClosed() {}
+
+ResultCode KClientSession::SendSyncRequest(KThread* thread, Core::Memory::Memory& memory,
+                                           Core::Timing::CoreTiming& core_timing) {
+    // Signal the server session that new data is available
+    return parent->GetServerSession().HandleSyncRequest(thread, memory, core_timing);
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_client_session.h

@@ -0,0 +1,61 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/result.h"
+
+union ResultCode;
+
+namespace Core::Memory {
+class Memory;
+}
+
+namespace Core::Timing {
+class CoreTiming;
+}
+
+namespace Kernel {
+
+class KernelCore;
+class KSession;
+class KThread;
+
+class KClientSession final
+    : public KAutoObjectWithSlabHeapAndContainer<KClientSession, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KClientSession, KAutoObject);
+
+public:
+    explicit KClientSession(KernelCore& kernel);
+    virtual ~KClientSession();
+
+    void Initialize(KSession* parent_, std::string&& name_) {
+        // Set member variables.
+        parent = parent_;
+        name = std::move(name_);
+    }
+
+    virtual void Destroy() override;
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
+
+    KSession* GetParent() const {
+        return parent;
+    }
+
+    ResultCode SendSyncRequest(KThread* thread, Core::Memory::Memory& memory,
+                               Core::Timing::CoreTiming& core_timing);
+
+    void OnServerClosed();
+
+private:
+    KSession* parent{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_condition_variable.cpp

@@ -7,12 +7,13 @@
 #include "core/arm/exclusive_monitor.h"
 #include "core/core.h"
 #include "core/hle/kernel/k_condition_variable.h"
+#include "core/hle/kernel/k_linked_list.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_synchronization_object.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/svc_common.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/memory.h"
@@ -107,8 +108,8 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
 
     // Wait for the address.
     {
-        std::shared_ptr<KThread> owner_thread;
-        ASSERT(!owner_thread);
+        KScopedAutoObject<KThread> owner_thread;
+        ASSERT(owner_thread.IsNull());
         {
             KScopedSchedulerLock sl(kernel);
             cur_thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
@@ -126,8 +127,10 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
                 R_UNLESS(test_tag == (handle | Svc::HandleWaitMask), RESULT_SUCCESS);
 
                 // Get the lock owner thread.
-                owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<KThread>(handle);
-                R_UNLESS(owner_thread, ResultInvalidHandle);
+                owner_thread =
+                    kernel.CurrentProcess()->GetHandleTable().GetObjectWithoutPseudoHandle<KThread>(
+                        handle);
+                R_UNLESS(owner_thread.IsNotNull(), ResultInvalidHandle);
 
                 // Update the lock.
                 cur_thread->SetAddressKey(addr, value);
@@ -137,7 +140,7 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
                 cur_thread->SetMutexWaitAddressForDebugging(addr);
             }
         }
-        ASSERT(owner_thread);
+        ASSERT(owner_thread.IsNotNull());
     }
 
     // Remove the thread as a waiter from the lock owner.
@@ -176,19 +179,22 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) {
 
     KThread* thread_to_close = nullptr;
     if (can_access) {
-        if (prev_tag == InvalidHandle) {
+        if (prev_tag == Svc::InvalidHandle) {
             // If nobody held the lock previously, we're all good.
             thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
             thread->Wakeup();
         } else {
             // Get the previous owner.
-            auto owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<KThread>(
-                prev_tag & ~Svc::HandleWaitMask);
+            KThread* owner_thread = kernel.CurrentProcess()
+                                        ->GetHandleTable()
+                                        .GetObjectWithoutPseudoHandle<KThread>(
+                                            static_cast<Handle>(prev_tag & ~Svc::HandleWaitMask))
+                                        .ReleasePointerUnsafe();
 
             if (owner_thread) {
                 // Add the thread as a waiter on the owner.
                 owner_thread->AddWaiter(thread);
-                thread_to_close = owner_thread.get();
+                thread_to_close = owner_thread;
             } else {
                 // The lock was tagged with a thread that doesn't exist.
                 thread->SetSyncedObject(nullptr, ResultInvalidState);
@@ -208,9 +214,7 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
     // Prepare for signaling.
     constexpr int MaxThreads = 16;
 
-    // TODO(bunnei): This should just be Thread once we implement KAutoObject instead of using
-    // std::shared_ptr.
-    std::vector<std::shared_ptr<KThread>> thread_list;
+    KLinkedList<KThread> thread_list{kernel};
     std::array<KThread*, MaxThreads> thread_array;
     s32 num_to_close{};
 
@@ -228,7 +232,7 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
                 if (num_to_close < MaxThreads) {
                     thread_array[num_to_close++] = thread;
                 } else {
-                    thread_list.push_back(SharedFrom(thread));
+                    thread_list.push_back(*thread);
                 }
             }
 
@@ -250,8 +254,9 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
     }
 
     // Close threads in the list.
-    for (auto it = thread_list.begin(); it != thread_list.end(); it = thread_list.erase(it)) {
-        (*it)->Close();
+    for (auto it = thread_list.begin(); it != thread_list.end();
+         it = thread_list.erase(kernel, it)) {
+        (*it).Close();
     }
 }
 

src/core/hle/kernel/k_event.cpp

@@ -3,30 +3,53 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/kernel/k_event.h"
-#include "core/hle/kernel/k_readable_event.h"
-#include "core/hle/kernel/k_writable_event.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/k_resource_limit.h"
 
 namespace Kernel {
 
-KEvent::KEvent(KernelCore& kernel, std::string&& name) : Object{kernel, std::move(name)} {}
+KEvent::KEvent(KernelCore& kernel)
+    : KAutoObjectWithSlabHeapAndContainer{kernel}, readable_event{kernel}, writable_event{kernel} {}
 
 KEvent::~KEvent() = default;
 
-std::shared_ptr<KEvent> KEvent::Create(KernelCore& kernel, std::string&& name) {
-    return std::make_shared<KEvent>(kernel, std::move(name));
-}
+void KEvent::Initialize(std::string&& name_) {
+    // Increment reference count.
+    // Because reference count is one on creation, this will result
+    // in a reference count of two. Thus, when both readable and
+    // writable events are closed this object will be destroyed.
+    Open();
 
-void KEvent::Initialize() {
     // Create our sub events.
-    readable_event = std::make_shared<KReadableEvent>(kernel, GetName() + ":Readable");
-    writable_event = std::make_shared<KWritableEvent>(kernel, GetName() + ":Writable");
+    KAutoObject::Create(std::addressof(readable_event));
+    KAutoObject::Create(std::addressof(writable_event));
 
     // Initialize our sub sessions.
-    readable_event->Initialize(this);
-    writable_event->Initialize(this);
+    readable_event.Initialize(this, name_ + ":Readable");
+    writable_event.Initialize(this, name_ + ":Writable");
+
+    // Set our owner process.
+    owner = kernel.CurrentProcess();
+    if (owner) {
+        owner->Open();
+    }
 
     // Mark initialized.
+    name = std::move(name_);
     initialized = true;
 }
 
+void KEvent::Finalize() {
+    KAutoObjectWithSlabHeapAndContainer<KEvent, KAutoObjectWithList>::Finalize();
+}
+
+void KEvent::PostDestroy(uintptr_t arg) {
+    // Release the event count resource the owner process holds.
+    KProcess* owner = reinterpret_cast<KProcess*>(arg);
+    if (owner) {
+        owner->GetResourceLimit()->Release(LimitableResource::Events, 1);
+        owner->Close();
+    }
+}
+
 } // namespace Kernel

src/core/hle/kernel/k_event.h

@@ -4,53 +4,54 @@
 
 #pragma once
 
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
+#include "core/hle/kernel/slab_helpers.h"
 
 namespace Kernel {
 
 class KernelCore;
 class KReadableEvent;
 class KWritableEvent;
+class KProcess;
 
-class KEvent final : public Object {
-public:
-    explicit KEvent(KernelCore& kernel, std::string&& name);
-    ~KEvent() override;
+class KEvent final : public KAutoObjectWithSlabHeapAndContainer<KEvent, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KEvent, KAutoObject);
 
-    static std::shared_ptr<KEvent> Create(KernelCore& kernel, std::string&& name);
+public:
+    explicit KEvent(KernelCore& kernel);
+    virtual ~KEvent();
 
-    void Initialize();
+    void Initialize(std::string&& name);
 
-    void Finalize() override {}
+    virtual void Finalize() override;
 
-    std::string GetTypeName() const override {
-        return "KEvent";
+    virtual bool IsInitialized() const override {
+        return initialized;
     }
 
-    static constexpr HandleType HANDLE_TYPE = HandleType::Event;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
+    virtual uintptr_t GetPostDestroyArgument() const override {
+        return reinterpret_cast<uintptr_t>(owner);
     }
 
-    std::shared_ptr<KReadableEvent>& GetReadableEvent() {
-        return readable_event;
-    }
+    static void PostDestroy(uintptr_t arg);
 
-    std::shared_ptr<KWritableEvent>& GetWritableEvent() {
-        return writable_event;
+    virtual KProcess* GetOwner() const override {
+        return owner;
     }
 
-    const std::shared_ptr<KReadableEvent>& GetReadableEvent() const {
+    KReadableEvent& GetReadableEvent() {
         return readable_event;
     }
 
-    const std::shared_ptr<KWritableEvent>& GetWritableEvent() const {
+    KWritableEvent& GetWritableEvent() {
         return writable_event;
     }
 
 private:
-    std::shared_ptr<KReadableEvent> readable_event;
-    std::shared_ptr<KWritableEvent> writable_event;
+    KReadableEvent readable_event;
+    KWritableEvent writable_event;
+    KProcess* owner{};
     bool initialized{};
 };
 

src/core/hle/kernel/k_handle_table.cpp

@@ -0,0 +1,135 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_handle_table.h"
+
+namespace Kernel {
+
+KHandleTable::KHandleTable(KernelCore& kernel_) : kernel{kernel_} {}
+KHandleTable ::~KHandleTable() = default;
+
+ResultCode KHandleTable::Finalize() {
+    // Get the table and clear our record of it.
+    u16 saved_table_size = 0;
+    {
+        KScopedSpinLock lk(m_lock);
+
+        std::swap(m_table_size, saved_table_size);
+    }
+
+    // Close and free all entries.
+    for (size_t i = 0; i < saved_table_size; i++) {
+        if (KAutoObject* obj = m_objects[i]; obj != nullptr) {
+            obj->Close();
+        }
+    }
+
+    return RESULT_SUCCESS;
+}
+
+bool KHandleTable::Remove(Handle handle) {
+    // Don't allow removal of a pseudo-handle.
+    if (Svc::IsPseudoHandle(handle)) {
+        return false;
+    }
+
+    // Handles must not have reserved bits set.
+    const auto handle_pack = HandlePack(handle);
+    if (handle_pack.reserved != 0) {
+        return false;
+    }
+
+    // Find the object and free the entry.
+    KAutoObject* obj = nullptr;
+    {
+        KScopedSpinLock lk(m_lock);
+
+        if (this->IsValidHandle(handle)) {
+            const auto index = handle_pack.index;
+
+            obj = m_objects[index];
+            this->FreeEntry(index);
+        } else {
+            return false;
+        }
+    }
+
+    // Close the object.
+    obj->Close();
+    return true;
+}
+
+ResultCode KHandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) {
+    KScopedSpinLock lk(m_lock);
+
+    // Never exceed our capacity.
+    R_UNLESS(m_count < m_table_size, ResultOutOfHandles);
+
+    // Allocate entry, set output handle.
+    {
+        const auto linear_id = this->AllocateLinearId();
+        const auto index = this->AllocateEntry();
+
+        m_entry_infos[index].info = {.linear_id = linear_id, .type = type};
+        m_objects[index] = obj;
+
+        obj->Open();
+
+        *out_handle = EncodeHandle(static_cast<u16>(index), linear_id);
+    }
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode KHandleTable::Reserve(Handle* out_handle) {
+    KScopedSpinLock lk(m_lock);
+
+    // Never exceed our capacity.
+    R_UNLESS(m_count < m_table_size, ResultOutOfHandles);
+
+    *out_handle = EncodeHandle(static_cast<u16>(this->AllocateEntry()), this->AllocateLinearId());
+    return RESULT_SUCCESS;
+}
+
+void KHandleTable::Unreserve(Handle handle) {
+    KScopedSpinLock lk(m_lock);
+
+    // Unpack the handle.
+    const auto handle_pack = HandlePack(handle);
+    const auto index = handle_pack.index;
+    const auto linear_id = handle_pack.linear_id;
+    const auto reserved = handle_pack.reserved;
+    ASSERT(reserved == 0);
+    ASSERT(linear_id != 0);
+
+    if (index < m_table_size) {
+        // NOTE: This code does not check the linear id.
+        ASSERT(m_objects[index] == nullptr);
+        this->FreeEntry(index);
+    }
+}
+
+void KHandleTable::Register(Handle handle, KAutoObject* obj, u16 type) {
+    KScopedSpinLock lk(m_lock);
+
+    // Unpack the handle.
+    const auto handle_pack = HandlePack(handle);
+    const auto index = handle_pack.index;
+    const auto linear_id = handle_pack.linear_id;
+    const auto reserved = handle_pack.reserved;
+    ASSERT(reserved == 0);
+    ASSERT(linear_id != 0);
+
+    if (index < m_table_size) {
+        // Set the entry.
+        ASSERT(m_objects[index] == nullptr);
+
+        m_entry_infos[index].info = {.linear_id = static_cast<u16>(linear_id), .type = type};
+        m_objects[index] = obj;
+
+        obj->Open();
+    }
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_handle_table.h

@@ -0,0 +1,310 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+
+#include "common/assert.h"
+#include "common/bit_field.h"
+#include "common/bit_util.h"
+#include "common/common_types.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_spin_lock.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/svc_common.h"
+#include "core/hle/kernel/svc_results.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KernelCore;
+
+class KHandleTable {
+    YUZU_NON_COPYABLE(KHandleTable);
+    YUZU_NON_MOVEABLE(KHandleTable);
+
+public:
+    static constexpr size_t MaxTableSize = 1024;
+
+public:
+    explicit KHandleTable(KernelCore& kernel_);
+    ~KHandleTable();
+
+    ResultCode Initialize(s32 size) {
+        R_UNLESS(size <= static_cast<s32>(MaxTableSize), ResultOutOfMemory);
+
+        // Initialize all fields.
+        m_max_count = 0;
+        m_table_size = static_cast<u16>((size <= 0) ? MaxTableSize : size);
+        m_next_linear_id = MinLinearId;
+        m_count = 0;
+        m_free_head_index = -1;
+
+        // Free all entries.
+        for (s32 i = 0; i < static_cast<s32>(m_table_size); ++i) {
+            m_objects[i] = nullptr;
+            m_entry_infos[i].next_free_index = i - 1;
+            m_free_head_index = i;
+        }
+
+        return RESULT_SUCCESS;
+    }
+
+    size_t GetTableSize() const {
+        return m_table_size;
+    }
+    size_t GetCount() const {
+        return m_count;
+    }
+    size_t GetMaxCount() const {
+        return m_max_count;
+    }
+
+    ResultCode Finalize();
+    bool Remove(Handle handle);
+
+    template <typename T = KAutoObject>
+    KScopedAutoObject<T> GetObjectWithoutPseudoHandle(Handle handle) const {
+        // Lock and look up in table.
+        KScopedSpinLock lk(m_lock);
+
+        if constexpr (std::is_same_v<T, KAutoObject>) {
+            return this->GetObjectImpl(handle);
+        } else {
+            if (auto* obj = this->GetObjectImpl(handle); obj != nullptr) {
+                return obj->DynamicCast<T*>();
+            } else {
+                return nullptr;
+            }
+        }
+    }
+
+    template <typename T = KAutoObject>
+    KScopedAutoObject<T> GetObject(Handle handle) const {
+        // Handle pseudo-handles.
+        if constexpr (std::derived_from<KProcess, T>) {
+            if (handle == Svc::PseudoHandle::CurrentProcess) {
+                auto* const cur_process = kernel.CurrentProcess();
+                ASSERT(cur_process != nullptr);
+                return cur_process;
+            }
+        } else if constexpr (std::derived_from<KThread, T>) {
+            if (handle == Svc::PseudoHandle::CurrentThread) {
+                auto* const cur_thread = GetCurrentThreadPointer(kernel);
+                ASSERT(cur_thread != nullptr);
+                return cur_thread;
+            }
+        }
+
+        return this->template GetObjectWithoutPseudoHandle<T>(handle);
+    }
+
+    ResultCode Reserve(Handle* out_handle);
+    void Unreserve(Handle handle);
+
+    template <typename T>
+    ResultCode Add(Handle* out_handle, T* obj) {
+        static_assert(std::is_base_of_v<KAutoObject, T>);
+        return this->Add(out_handle, obj, obj->GetTypeObj().GetClassToken());
+    }
+
+    template <typename T>
+    void Register(Handle handle, T* obj) {
+        static_assert(std::is_base_of_v<KAutoObject, T>);
+        return this->Register(handle, obj, obj->GetTypeObj().GetClassToken());
+    }
+
+    template <typename T>
+    bool GetMultipleObjects(T** out, const Handle* handles, size_t num_handles) const {
+        // Try to convert and open all the handles.
+        size_t num_opened;
+        {
+            // Lock the table.
+            KScopedSpinLock lk(m_lock);
+            for (num_opened = 0; num_opened < num_handles; num_opened++) {
+                // Get the current handle.
+                const auto cur_handle = handles[num_opened];
+
+                // Get the object for the current handle.
+                KAutoObject* cur_object = this->GetObjectImpl(cur_handle);
+                if (cur_object == nullptr) {
+                    break;
+                }
+
+                // Cast the current object to the desired type.
+                T* cur_t = cur_object->DynamicCast<T*>();
+                if (cur_t == nullptr) {
+                    break;
+                }
+
+                // Open a reference to the current object.
+                cur_t->Open();
+                out[num_opened] = cur_t;
+            }
+        }
+
+        // If we converted every object, succeed.
+        if (num_opened == num_handles) {
+            return true;
+        }
+
+        // If we didn't convert entry object, close the ones we opened.
+        for (size_t i = 0; i < num_opened; i++) {
+            out[i]->Close();
+        }
+
+        return false;
+    }
+
+private:
+    ResultCode Add(Handle* out_handle, KAutoObject* obj, u16 type);
+    void Register(Handle handle, KAutoObject* obj, u16 type);
+
+    s32 AllocateEntry() {
+        ASSERT(m_count < m_table_size);
+
+        const auto index = m_free_head_index;
+
+        m_free_head_index = m_entry_infos[index].GetNextFreeIndex();
+
+        m_max_count = std::max(m_max_count, ++m_count);
+
+        return index;
+    }
+
+    void FreeEntry(s32 index) {
+        ASSERT(m_count > 0);
+
+        m_objects[index] = nullptr;
+        m_entry_infos[index].next_free_index = m_free_head_index;
+
+        m_free_head_index = index;
+
+        --m_count;
+    }
+
+    u16 AllocateLinearId() {
+        const u16 id = m_next_linear_id++;
+        if (m_next_linear_id > MaxLinearId) {
+            m_next_linear_id = MinLinearId;
+        }
+        return id;
+    }
+
+    bool IsValidHandle(Handle handle) const {
+        // Unpack the handle.
+        const auto handle_pack = HandlePack(handle);
+        const auto raw_value = handle_pack.raw;
+        const auto index = handle_pack.index;
+        const auto linear_id = handle_pack.linear_id;
+        const auto reserved = handle_pack.reserved;
+        ASSERT(reserved == 0);
+
+        // Validate our indexing information.
+        if (raw_value == 0) {
+            return false;
+        }
+        if (linear_id == 0) {
+            return false;
+        }
+        if (index >= m_table_size) {
+            return false;
+        }
+
+        // Check that there's an object, and our serial id is correct.
+        if (m_objects[index] == nullptr) {
+            return false;
+        }
+        if (m_entry_infos[index].GetLinearId() != linear_id) {
+            return false;
+        }
+
+        return true;
+    }
+
+    KAutoObject* GetObjectImpl(Handle handle) const {
+        // Handles must not have reserved bits set.
+        const auto handle_pack = HandlePack(handle);
+        if (handle_pack.reserved != 0) {
+            return nullptr;
+        }
+
+        if (this->IsValidHandle(handle)) {
+            return m_objects[handle_pack.index];
+        } else {
+            return nullptr;
+        }
+    }
+
+    KAutoObject* GetObjectByIndexImpl(Handle* out_handle, size_t index) const {
+
+        // Index must be in bounds.
+        if (index >= m_table_size) {
+            return nullptr;
+        }
+
+        // Ensure entry has an object.
+        if (KAutoObject* obj = m_objects[index]; obj != nullptr) {
+            *out_handle = EncodeHandle(static_cast<u16>(index), m_entry_infos[index].GetLinearId());
+            return obj;
+        } else {
+            return nullptr;
+        }
+    }
+
+private:
+    union HandlePack {
+        HandlePack() = default;
+        HandlePack(Handle handle) : raw{static_cast<u32>(handle)} {}
+
+        u32 raw;
+        BitField<0, 15, u32> index;
+        BitField<15, 15, u32> linear_id;
+        BitField<30, 2, u32> reserved;
+    };
+
+    static constexpr u16 MinLinearId = 1;
+    static constexpr u16 MaxLinearId = 0x7FFF;
+
+    static constexpr Handle EncodeHandle(u16 index, u16 linear_id) {
+        HandlePack handle{};
+        handle.index.Assign(index);
+        handle.linear_id.Assign(linear_id);
+        handle.reserved.Assign(0);
+        return handle.raw;
+    }
+
+    union EntryInfo {
+        struct {
+            u16 linear_id;
+            u16 type;
+        } info;
+        s32 next_free_index;
+
+        constexpr u16 GetLinearId() const {
+            return info.linear_id;
+        }
+        constexpr u16 GetType() const {
+            return info.type;
+        }
+        constexpr s32 GetNextFreeIndex() const {
+            return next_free_index;
+        }
+    };
+
+private:
+    std::array<EntryInfo, MaxTableSize> m_entry_infos{};
+    std::array<KAutoObject*, MaxTableSize> m_objects{};
+    s32 m_free_head_index{-1};
+    u16 m_table_size{};
+    u16 m_max_count{};
+    u16 m_next_linear_id{MinLinearId};
+    u16 m_count{};
+    mutable KSpinLock m_lock;
+    KernelCore& kernel;
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_linked_list.h

@@ -0,0 +1,238 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <boost/intrusive/list.hpp>
+
+#include "common/assert.h"
+#include "core/hle/kernel/slab_helpers.h"
+
+namespace Kernel {
+
+class KernelCore;
+
+class KLinkedListNode : public boost::intrusive::list_base_hook<>,
+                        public KSlabAllocated<KLinkedListNode> {
+
+public:
+    KLinkedListNode() = default;
+
+    void Initialize(void* it) {
+        m_item = it;
+    }
+
+    void* GetItem() const {
+        return m_item;
+    }
+
+private:
+    void* m_item = nullptr;
+};
+
+template <typename T>
+class KLinkedList : private boost::intrusive::list<KLinkedListNode> {
+private:
+    using BaseList = boost::intrusive::list<KLinkedListNode>;
+
+public:
+    template <bool Const>
+    class Iterator;
+
+    using value_type = T;
+    using size_type = size_t;
+    using difference_type = ptrdiff_t;
+    using pointer = value_type*;
+    using const_pointer = const value_type*;
+    using reference = value_type&;
+    using const_reference = const value_type&;
+    using iterator = Iterator<false>;
+    using const_iterator = Iterator<true>;
+    using reverse_iterator = std::reverse_iterator<iterator>;
+    using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+
+    template <bool Const>
+    class Iterator {
+    private:
+        using BaseIterator = BaseList::iterator;
+        friend class KLinkedList;
+
+    public:
+        using iterator_category = std::bidirectional_iterator_tag;
+        using value_type = typename KLinkedList::value_type;
+        using difference_type = typename KLinkedList::difference_type;
+        using pointer = std::conditional_t<Const, KLinkedList::const_pointer, KLinkedList::pointer>;
+        using reference =
+            std::conditional_t<Const, KLinkedList::const_reference, KLinkedList::reference>;
+
+    public:
+        explicit Iterator(BaseIterator it) : m_base_it(it) {}
+
+        pointer GetItem() const {
+            return static_cast<pointer>(m_base_it->GetItem());
+        }
+
+        bool operator==(const Iterator& rhs) const {
+            return m_base_it == rhs.m_base_it;
+        }
+
+        bool operator!=(const Iterator& rhs) const {
+            return !(*this == rhs);
+        }
+
+        pointer operator->() const {
+            return this->GetItem();
+        }
+
+        reference operator*() const {
+            return *this->GetItem();
+        }
+
+        Iterator& operator++() {
+            ++m_base_it;
+            return *this;
+        }
+
+        Iterator& operator--() {
+            --m_base_it;
+            return *this;
+        }
+
+        Iterator operator++(int) {
+            const Iterator it{*this};
+            ++(*this);
+            return it;
+        }
+
+        Iterator operator--(int) {
+            const Iterator it{*this};
+            --(*this);
+            return it;
+        }
+
+        operator Iterator<true>() const {
+            return Iterator<true>(m_base_it);
+        }
+
+    private:
+        BaseIterator m_base_it;
+    };
+
+public:
+    constexpr KLinkedList(KernelCore& kernel_) : BaseList(), kernel{kernel_} {}
+
+    ~KLinkedList() {
+        // Erase all elements.
+        for (auto it = this->begin(); it != this->end(); it = this->erase(kernel, it)) {
+        }
+
+        // Ensure we succeeded.
+        ASSERT(this->empty());
+    }
+
+    // Iterator accessors.
+    iterator begin() {
+        return iterator(BaseList::begin());
+    }
+
+    const_iterator begin() const {
+        return const_iterator(BaseList::begin());
+    }
+
+    iterator end() {
+        return iterator(BaseList::end());
+    }
+
+    const_iterator end() const {
+        return const_iterator(BaseList::end());
+    }
+
+    const_iterator cbegin() const {
+        return this->begin();
+    }
+
+    const_iterator cend() const {
+        return this->end();
+    }
+
+    reverse_iterator rbegin() {
+        return reverse_iterator(this->end());
+    }
+
+    const_reverse_iterator rbegin() const {
+        return const_reverse_iterator(this->end());
+    }
+
+    reverse_iterator rend() {
+        return reverse_iterator(this->begin());
+    }
+
+    const_reverse_iterator rend() const {
+        return const_reverse_iterator(this->begin());
+    }
+
+    const_reverse_iterator crbegin() const {
+        return this->rbegin();
+    }
+
+    const_reverse_iterator crend() const {
+        return this->rend();
+    }
+
+    // Content management.
+    using BaseList::empty;
+    using BaseList::size;
+
+    reference back() {
+        return *(--this->end());
+    }
+
+    const_reference back() const {
+        return *(--this->end());
+    }
+
+    reference front() {
+        return *this->begin();
+    }
+
+    const_reference front() const {
+        return *this->begin();
+    }
+
+    iterator insert(const_iterator pos, reference ref) {
+        KLinkedListNode* node = KLinkedListNode::Allocate(kernel);
+        ASSERT(node != nullptr);
+        node->Initialize(std::addressof(ref));
+        return iterator(BaseList::insert(pos.m_base_it, *node));
+    }
+
+    void push_back(reference ref) {
+        this->insert(this->end(), ref);
+    }
+
+    void push_front(reference ref) {
+        this->insert(this->begin(), ref);
+    }
+
+    void pop_back() {
+        this->erase(--this->end());
+    }
+
+    void pop_front() {
+        this->erase(this->begin());
+    }
+
+    iterator erase(KernelCore& kernel, const iterator pos) {
+        KLinkedListNode* freed_node = std::addressof(*pos.m_base_it);
+        iterator ret = iterator(BaseList::erase(pos.m_base_it));
+        KLinkedListNode::Free(kernel, freed_node);
+
+        return ret;
+    }
+
+private:
+    KernelCore& kernel;
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_memory_block.h

@@ -134,6 +134,10 @@ enum class KMemoryPermission : u8 {
 };
 DECLARE_ENUM_FLAG_OPERATORS(KMemoryPermission);
 
+constexpr KMemoryPermission ConvertToKMemoryPermission(Svc::MemoryPermission perm) {
+    return static_cast<KMemoryPermission>(perm);
+}
+
 enum class KMemoryAttribute : u8 {
     None = 0x00,
     Mask = 0x7F,

src/core/hle/kernel/k_page_table.cpp

@@ -11,11 +11,11 @@
 #include "core/hle/kernel/k_memory_block_manager.h"
 #include "core/hle/kernel/k_page_linked_list.h"
 #include "core/hle/kernel/k_page_table.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/k_system_control.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/memory.h"
 
@@ -420,7 +420,7 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
         remaining_size);
     if (!memory_reservation.Succeeded()) {
         LOG_ERROR(Kernel, "Could not reserve remaining {:X} bytes", remaining_size);
-        return ResultResourceLimitedExceeded;
+        return ResultLimitReached;
     }
 
     KPageLinkedList page_linked_list;
@@ -578,7 +578,7 @@ ResultCode KPageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) {
     AddRegionToPages(dst_addr, num_pages, dst_pages);
 
     if (!dst_pages.IsEqual(src_pages)) {
-        return ResultInvalidMemoryRange;
+        return ResultInvalidMemoryRegion;
     }
 
     {
@@ -641,6 +641,45 @@ ResultCode KPageTable::MapPages(VAddr addr, KPageLinkedList& page_linked_list, K
     return RESULT_SUCCESS;
 }
 
+ResultCode KPageTable::UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list) {
+    VAddr cur_addr{addr};
+
+    for (const auto& node : page_linked_list.Nodes()) {
+        const std::size_t num_pages{(addr - cur_addr) / PageSize};
+        if (const auto result{
+                Operate(addr, num_pages, KMemoryPermission::None, OperationType::Unmap)};
+            result.IsError()) {
+            return result;
+        }
+
+        cur_addr += node.GetNumPages() * PageSize;
+    }
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
+                                  KMemoryState state) {
+    std::lock_guard lock{page_table_lock};
+
+    const std::size_t num_pages{page_linked_list.GetNumPages()};
+    const std::size_t size{num_pages * PageSize};
+
+    if (!CanContain(addr, size, state)) {
+        return ResultInvalidCurrentMemory;
+    }
+
+    if (IsRegionMapped(addr, num_pages * PageSize)) {
+        return ResultInvalidCurrentMemory;
+    }
+
+    CASCADE_CODE(UnmapPages(addr, page_linked_list));
+
+    block_manager->Update(addr, num_pages, state, KMemoryPermission::None);
+
+    return RESULT_SUCCESS;
+}
+
 ResultCode KPageTable::SetCodeMemoryPermission(VAddr addr, std::size_t size,
                                                KMemoryPermission perm) {
 
@@ -790,7 +829,7 @@ ResultVal<VAddr> KPageTable::SetHeapSize(std::size_t size) {
 
         if (!memory_reservation.Succeeded()) {
             LOG_ERROR(Kernel, "Could not reserve heap extension of size {:X} bytes", delta);
-            return ResultResourceLimitedExceeded;
+            return ResultLimitReached;
         }
 
         KPageLinkedList page_linked_list;
@@ -1067,7 +1106,7 @@ constexpr std::size_t KPageTable::GetRegionSize(KMemoryState state) const {
     }
 }
 
-constexpr bool KPageTable::CanContain(VAddr addr, std::size_t size, KMemoryState state) const {
+bool KPageTable::CanContain(VAddr addr, std::size_t size, KMemoryState state) const {
     const VAddr end{addr + size};
     const VAddr last{end - 1};
     const VAddr region_start{GetRegionAddress(state)};

src/core/hle/kernel/k_page_table.h

@@ -40,6 +40,7 @@ public:
     ResultCode Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size);
     ResultCode MapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state,
                         KMemoryPermission perm);
+    ResultCode UnmapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state);
     ResultCode SetCodeMemoryPermission(VAddr addr, std::size_t size, KMemoryPermission perm);
     KMemoryInfo QueryInfo(VAddr addr);
     ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
@@ -63,6 +64,8 @@ public:
         return page_table_impl;
     }
 
+    bool CanContain(VAddr addr, std::size_t size, KMemoryState state) const;
+
 private:
     enum class OperationType : u32 {
         Map,
@@ -79,6 +82,7 @@ private:
     ResultCode InitializeMemoryLayout(VAddr start, VAddr end);
     ResultCode MapPages(VAddr addr, const KPageLinkedList& page_linked_list,
                         KMemoryPermission perm);
+    ResultCode UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list);
     void MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end);
     bool IsRegionMapped(VAddr address, u64 size);
     bool IsRegionContiguous(VAddr addr, u64 size) const;
@@ -92,7 +96,6 @@ private:
                        OperationType operation, PAddr map_addr = 0);
     constexpr VAddr GetRegionAddress(KMemoryState state) const;
     constexpr std::size_t GetRegionSize(KMemoryState state) const;
-    constexpr bool CanContain(VAddr addr, std::size_t size, KMemoryState state) const;
 
     constexpr ResultCode CheckMemoryState(const KMemoryInfo& info, KMemoryState state_mask,
                                           KMemoryState state, KMemoryPermission perm_mask,
@@ -216,8 +219,6 @@ public:
     constexpr PAddr GetPhysicalAddr(VAddr addr) {
         return page_table_impl.backing_addr[addr >> PageBits] + addr;
     }
-
-private:
     constexpr bool Contains(VAddr addr) const {
         return address_space_start <= addr && addr <= address_space_end - 1;
     }
@@ -225,6 +226,8 @@ private:
         return address_space_start <= addr && addr < addr + size &&
                addr + size - 1 <= address_space_end - 1;
     }
+
+private:
     constexpr bool IsKernel() const {
         return is_kernel;
     }

src/core/hle/kernel/k_port.cpp

@@ -0,0 +1,68 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_port.h"
+#include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/svc_results.h"
+
+namespace Kernel {
+
+KPort::KPort(KernelCore& kernel)
+    : KAutoObjectWithSlabHeapAndContainer{kernel}, server{kernel}, client{kernel} {}
+
+KPort::~KPort() = default;
+
+void KPort::Initialize(s32 max_sessions_, bool is_light_, const std::string& name_) {
+    // Open a new reference count to the initialized port.
+    Open();
+
+    // Create and initialize our server/client pair.
+    KAutoObject::Create(std::addressof(server));
+    KAutoObject::Create(std::addressof(client));
+    server.Initialize(this, name_ + ":Server");
+    client.Initialize(this, max_sessions_, name_ + ":Client");
+
+    // Set our member variables.
+    is_light = is_light_;
+    name = name_;
+    state = State::Normal;
+}
+
+void KPort::OnClientClosed() {
+    KScopedSchedulerLock sl{kernel};
+
+    if (state == State::Normal) {
+        state = State::ClientClosed;
+    }
+}
+
+void KPort::OnServerClosed() {
+    KScopedSchedulerLock sl{kernel};
+
+    if (state == State::Normal) {
+        state = State::ServerClosed;
+    }
+}
+
+bool KPort::IsServerClosed() const {
+    KScopedSchedulerLock sl{kernel};
+    return state == State::ServerClosed;
+}
+
+ResultCode KPort::EnqueueSession(KServerSession* session) {
+    KScopedSchedulerLock sl{kernel};
+
+    R_UNLESS(state == State::Normal, ResultPortClosed);
+
+    if (server.HasHLEHandler()) {
+        server.GetHLEHandler()->ClientConnected(session);
+    } else {
+        server.EnqueueSession(session);
+    }
+
+    return RESULT_SUCCESS;
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_port.h

@@ -0,0 +1,69 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_server_port.h"
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KServerSession;
+
+class KPort final : public KAutoObjectWithSlabHeapAndContainer<KPort, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KPort, KAutoObject);
+
+public:
+    explicit KPort(KernelCore& kernel);
+    virtual ~KPort();
+
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
+
+    void Initialize(s32 max_sessions_, bool is_light_, const std::string& name_);
+    void OnClientClosed();
+    void OnServerClosed();
+
+    bool IsLight() const {
+        return is_light;
+    }
+
+    bool IsServerClosed() const;
+
+    ResultCode EnqueueSession(KServerSession* session);
+
+    KClientPort& GetClientPort() {
+        return client;
+    }
+    KServerPort& GetServerPort() {
+        return server;
+    }
+    const KClientPort& GetClientPort() const {
+        return client;
+    }
+    const KServerPort& GetServerPort() const {
+        return server;
+    }
+
+private:
+    enum class State : u8 {
+        Invalid = 0,
+        Normal = 1,
+        ClientClosed = 2,
+        ServerClosed = 3,
+    };
+
+private:
+    KServerPort server;
+    KClientPort client;
+    State state{State::Invalid};
+    bool is_light{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/process.cpp → src/core/hle/kernel/k_process.cpp

@@ -17,13 +17,14 @@
 #include "core/hle/kernel/code_set.h"
 #include "core/hle/kernel/k_memory_block_manager.h"
 #include "core/hle/kernel/k_page_table.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_resource_reservation.h"
+#include "core/hle/kernel/k_shared_memory.h"
 #include "core/hle/kernel/k_slab_heap.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/lock.h"
 #include "core/memory.h"
@@ -37,17 +38,20 @@ namespace {
  * @param owner_process The parent process for the main thread
  * @param priority The priority to give the main thread
  */
-void SetupMainThread(Core::System& system, Process& owner_process, u32 priority, VAddr stack_top) {
+void SetupMainThread(Core::System& system, KProcess& owner_process, u32 priority, VAddr stack_top) {
     const VAddr entry_point = owner_process.PageTable().GetCodeRegionStart();
     ASSERT(owner_process.GetResourceLimit()->Reserve(LimitableResource::Threads, 1));
-    auto thread_res =
-        KThread::CreateUserThread(system, ThreadType::User, "main", entry_point, priority, 0,
-                                  owner_process.GetIdealCoreId(), stack_top, &owner_process);
 
-    std::shared_ptr<KThread> thread = std::move(thread_res).Unwrap();
+    KThread* thread = KThread::Create(system.Kernel());
+    ASSERT(KThread::InitializeUserThread(system, thread, entry_point, 0, stack_top, priority,
+                                         owner_process.GetIdealCoreId(), &owner_process)
+               .IsSuccess());
 
     // Register 1 must be a handle to the main thread
-    const Handle thread_handle = owner_process.GetHandleTable().Create(thread).Unwrap();
+    Handle thread_handle{};
+    owner_process.GetHandleTable().Add(&thread_handle, thread);
+
+    thread->SetName("main");
     thread->GetContext32().cpu_registers[0] = 0;
     thread->GetContext64().cpu_registers[0] = 0;
     thread->GetContext32().cpu_registers[1] = thread_handle;
@@ -114,10 +118,10 @@ private:
     std::bitset<num_slot_entries> is_slot_used;
 };
 
-std::shared_ptr<Process> Process::Create(Core::System& system, std::string name, ProcessType type) {
+ResultCode KProcess::Initialize(KProcess* process, Core::System& system, std::string name,
+                                ProcessType type) {
     auto& kernel = system.Kernel();
 
-    std::shared_ptr<Process> process = std::make_shared<Process>(system);
     process->name = std::move(name);
 
     process->resource_limit = kernel.GetSystemResourceLimit();
@@ -126,6 +130,7 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name,
     process->process_id = type == ProcessType::KernelInternal ? kernel.CreateNewKernelProcessID()
                                                               : kernel.CreateNewUserProcessID();
     process->capabilities.InitializeForMetadatalessProcess();
+    process->is_initialized = true;
 
     std::mt19937 rng(Settings::values.rng_seed.GetValue().value_or(std::time(nullptr)));
     std::uniform_int_distribution<u64> distribution;
@@ -133,14 +138,18 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name,
                   [&] { return distribution(rng); });
 
     kernel.AppendNewProcess(process);
-    return process;
+
+    // Open a reference to the resource limit.
+    process->resource_limit->Open();
+
+    return RESULT_SUCCESS;
 }
 
-std::shared_ptr<KResourceLimit> Process::GetResourceLimit() const {
+KResourceLimit* KProcess::GetResourceLimit() const {
     return resource_limit;
 }
 
-void Process::IncrementThreadCount() {
+void KProcess::IncrementThreadCount() {
     ASSERT(num_threads >= 0);
     num_created_threads++;
 
@@ -149,7 +158,7 @@ void Process::IncrementThreadCount() {
     }
 }
 
-void Process::DecrementThreadCount() {
+void KProcess::DecrementThreadCount() {
     ASSERT(num_threads > 0);
 
     if (const auto count = --num_threads; count == 0) {
@@ -157,31 +166,34 @@ void Process::DecrementThreadCount() {
     }
 }
 
-u64 Process::GetTotalPhysicalMemoryAvailable() const {
+u64 KProcess::GetTotalPhysicalMemoryAvailable() const {
     const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
                        page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
                        main_thread_stack_size};
-    ASSERT(capacity == kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
+    if (const auto pool_size = kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application);
+        capacity != pool_size) {
+        LOG_WARNING(Kernel, "capacity {} != application pool size {}", capacity, pool_size);
+    }
     if (capacity < memory_usage_capacity) {
         return capacity;
     }
     return memory_usage_capacity;
 }
 
-u64 Process::GetTotalPhysicalMemoryAvailableWithoutSystemResource() const {
+u64 KProcess::GetTotalPhysicalMemoryAvailableWithoutSystemResource() const {
     return GetTotalPhysicalMemoryAvailable() - GetSystemResourceSize();
 }
 
-u64 Process::GetTotalPhysicalMemoryUsed() const {
+u64 KProcess::GetTotalPhysicalMemoryUsed() const {
     return image_size + main_thread_stack_size + page_table->GetTotalHeapSize() +
            GetSystemResourceSize();
 }
 
-u64 Process::GetTotalPhysicalMemoryUsedWithoutSystemResource() const {
+u64 KProcess::GetTotalPhysicalMemoryUsedWithoutSystemResource() const {
     return GetTotalPhysicalMemoryUsed() - GetSystemResourceUsage();
 }
 
-bool Process::ReleaseUserException(KThread* thread) {
+bool KProcess::ReleaseUserException(KThread* thread) {
     KScopedSchedulerLock sl{kernel};
 
     if (exception_thread == thread) {
@@ -206,7 +218,7 @@ bool Process::ReleaseUserException(KThread* thread) {
     }
 }
 
-void Process::PinCurrentThread() {
+void KProcess::PinCurrentThread() {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
     // Get the current thread.
@@ -221,7 +233,7 @@ void Process::PinCurrentThread() {
     KScheduler::SetSchedulerUpdateNeeded(kernel);
 }
 
-void Process::UnpinCurrentThread() {
+void KProcess::UnpinCurrentThread() {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
     // Get the current thread.
@@ -236,15 +248,39 @@ void Process::UnpinCurrentThread() {
     KScheduler::SetSchedulerUpdateNeeded(kernel);
 }
 
-void Process::RegisterThread(const KThread* thread) {
+ResultCode KProcess::AddSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr address,
+                                     [[maybe_unused]] size_t size) {
+    // Lock ourselves, to prevent concurrent access.
+    KScopedLightLock lk(state_lock);
+
+    // TODO(bunnei): Manage KSharedMemoryInfo list here.
+
+    // Open a reference to the shared memory.
+    shmem->Open();
+
+    return RESULT_SUCCESS;
+}
+
+void KProcess::RemoveSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr address,
+                                  [[maybe_unused]] size_t size) {
+    // Lock ourselves, to prevent concurrent access.
+    KScopedLightLock lk(state_lock);
+
+    // TODO(bunnei): Manage KSharedMemoryInfo list here.
+
+    // Close a reference to the shared memory.
+    shmem->Close();
+}
+
+void KProcess::RegisterThread(const KThread* thread) {
     thread_list.push_back(thread);
 }
 
-void Process::UnregisterThread(const KThread* thread) {
+void KProcess::UnregisterThread(const KThread* thread) {
     thread_list.remove(thread);
 }
 
-ResultCode Process::Reset() {
+ResultCode KProcess::Reset() {
     // Lock the process and the scheduler.
     KScopedLightLock lk(state_lock);
     KScopedSchedulerLock sl{kernel};
@@ -258,8 +294,8 @@ ResultCode Process::Reset() {
     return RESULT_SUCCESS;
 }
 
-ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
-                                     std::size_t code_size) {
+ResultCode KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
+                                      std::size_t code_size) {
     program_id = metadata.GetTitleID();
     ideal_core = metadata.GetMainThreadCore();
     is_64bit_process = metadata.Is64BitProgram();
@@ -271,7 +307,7 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
     if (!memory_reservation.Succeeded()) {
         LOG_ERROR(Kernel, "Could not reserve process memory requirements of size {:X} bytes",
                   code_size + system_resource_size);
-        return ResultResourceLimitedExceeded;
+        return ResultLimitReached;
     }
     // Initialize proces address space
     if (const ResultCode result{
@@ -318,10 +354,10 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
     tls_region_address = CreateTLSRegion();
     memory_reservation.Commit();
 
-    return handle_table.SetSize(capabilities.GetHandleTableSize());
+    return handle_table.Initialize(capabilities.GetHandleTableSize());
 }
 
-void Process::Run(s32 main_thread_priority, u64 stack_size) {
+void KProcess::Run(s32 main_thread_priority, u64 stack_size) {
     AllocateMainThreadStack(stack_size);
     resource_limit->Reserve(LimitableResource::Threads, 1);
     resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size);
@@ -331,18 +367,18 @@ void Process::Run(s32 main_thread_priority, u64 stack_size) {
 
     ChangeStatus(ProcessStatus::Running);
 
-    SetupMainThread(system, *this, main_thread_priority, main_thread_stack_top);
+    SetupMainThread(kernel.System(), *this, main_thread_priority, main_thread_stack_top);
 }
 
-void Process::PrepareForTermination() {
+void KProcess::PrepareForTermination() {
     ChangeStatus(ProcessStatus::Exiting);
 
-    const auto stop_threads = [this](const std::vector<std::shared_ptr<KThread>>& thread_list) {
+    const auto stop_threads = [this](const std::vector<KThread*>& thread_list) {
         for (auto& thread : thread_list) {
             if (thread->GetOwnerProcess() != this)
                 continue;
 
-            if (thread.get() == kernel.CurrentScheduler()->GetCurrentThread())
+            if (thread == kernel.CurrentScheduler()->GetCurrentThread())
                 continue;
 
             // TODO(Subv): When are the other running/ready threads terminated?
@@ -353,7 +389,7 @@ void Process::PrepareForTermination() {
         }
     };
 
-    stop_threads(system.GlobalSchedulerContext().GetThreadList());
+    stop_threads(kernel.System().GlobalSchedulerContext().GetThreadList());
 
     FreeTLSRegion(tls_region_address);
     tls_region_address = 0;
@@ -366,6 +402,16 @@ void Process::PrepareForTermination() {
     ChangeStatus(ProcessStatus::Exited);
 }
 
+void KProcess::Finalize() {
+    // Release memory to the resource limit.
+    if (resource_limit != nullptr) {
+        resource_limit->Close();
+    }
+
+    // Perform inherited finalization.
+    KAutoObjectWithSlabHeapAndContainer<KProcess, KSynchronizationObject>::Finalize();
+}
+
 /**
  * Attempts to find a TLS page that contains a free slot for
  * use by a thread.
@@ -379,8 +425,8 @@ static auto FindTLSPageWithAvailableSlots(std::vector<TLSPage>& tls_pages) {
                         [](const auto& page) { return page.HasAvailableSlots(); });
 }
 
-VAddr Process::CreateTLSRegion() {
-    KScopedSchedulerLock lock(system.Kernel());
+VAddr KProcess::CreateTLSRegion() {
+    KScopedSchedulerLock lock(kernel);
     if (auto tls_page_iter{FindTLSPageWithAvailableSlots(tls_pages)};
         tls_page_iter != tls_pages.cend()) {
         return *tls_page_iter->ReserveSlot();
@@ -391,7 +437,7 @@ VAddr Process::CreateTLSRegion() {
 
     const VAddr start{page_table->GetKernelMapRegionStart()};
     const VAddr size{page_table->GetKernelMapRegionEnd() - start};
-    const PAddr tls_map_addr{system.DeviceMemory().GetPhysicalAddr(tls_page_ptr)};
+    const PAddr tls_map_addr{kernel.System().DeviceMemory().GetPhysicalAddr(tls_page_ptr)};
     const VAddr tls_page_addr{page_table
                                   ->AllocateAndMapMemory(1, PageSize, true, start, size / PageSize,
                                                          KMemoryState::ThreadLocal,
@@ -410,8 +456,8 @@ VAddr Process::CreateTLSRegion() {
     return *reserve_result;
 }
 
-void Process::FreeTLSRegion(VAddr tls_address) {
-    KScopedSchedulerLock lock(system.Kernel());
+void KProcess::FreeTLSRegion(VAddr tls_address) {
+    KScopedSchedulerLock lock(kernel);
     const VAddr aligned_address = Common::AlignDown(tls_address, Core::Memory::PAGE_SIZE);
     auto iter =
         std::find_if(tls_pages.begin(), tls_pages.end(), [aligned_address](const auto& page) {
@@ -425,33 +471,34 @@ void Process::FreeTLSRegion(VAddr tls_address) {
     iter->ReleaseSlot(tls_address);
 }
 
-void Process::LoadModule(CodeSet code_set, VAddr base_addr) {
+void KProcess::LoadModule(CodeSet code_set, VAddr base_addr) {
     std::lock_guard lock{HLE::g_hle_lock};
     const auto ReprotectSegment = [&](const CodeSet::Segment& segment,
                                       KMemoryPermission permission) {
         page_table->SetCodeMemoryPermission(segment.addr + base_addr, segment.size, permission);
     };
 
-    system.Memory().WriteBlock(*this, base_addr, code_set.memory.data(), code_set.memory.size());
+    kernel.System().Memory().WriteBlock(*this, base_addr, code_set.memory.data(),
+                                        code_set.memory.size());
 
     ReprotectSegment(code_set.CodeSegment(), KMemoryPermission::ReadAndExecute);
     ReprotectSegment(code_set.RODataSegment(), KMemoryPermission::Read);
     ReprotectSegment(code_set.DataSegment(), KMemoryPermission::ReadAndWrite);
 }
 
-bool Process::IsSignaled() const {
+bool KProcess::IsSignaled() const {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
     return is_signaled;
 }
 
-Process::Process(Core::System& system)
-    : KSynchronizationObject{system.Kernel()}, page_table{std::make_unique<KPageTable>(system)},
-      handle_table{system.Kernel()}, address_arbiter{system}, condition_var{system},
-      state_lock{system.Kernel()}, system{system} {}
+KProcess::KProcess(KernelCore& kernel)
+    : KAutoObjectWithSlabHeapAndContainer{kernel},
+      page_table{std::make_unique<KPageTable>(kernel.System())}, handle_table{kernel},
+      address_arbiter{kernel.System()}, condition_var{kernel.System()}, state_lock{kernel} {}
 
-Process::~Process() = default;
+KProcess::~KProcess() = default;
 
-void Process::ChangeStatus(ProcessStatus new_status) {
+void KProcess::ChangeStatus(ProcessStatus new_status) {
     if (status == new_status) {
         return;
     }
@@ -461,7 +508,7 @@ void Process::ChangeStatus(ProcessStatus new_status) {
     NotifyAvailable();
 }
 
-ResultCode Process::AllocateMainThreadStack(std::size_t stack_size) {
+ResultCode KProcess::AllocateMainThreadStack(std::size_t stack_size) {
     ASSERT(stack_size);
 
     // The kernel always ensures that the given stack size is page aligned.

src/core/hle/kernel/process.h → src/core/hle/kernel/k_process.h

@@ -11,11 +11,13 @@
 #include <unordered_map>
 #include <vector>
 #include "common/common_types.h"
-#include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_address_arbiter.h"
+#include "core/hle/kernel/k_auto_object.h"
 #include "core/hle/kernel/k_condition_variable.h"
+#include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_synchronization_object.h"
 #include "core/hle/kernel/process_capability.h"
+#include "core/hle/kernel/slab_helpers.h"
 #include "core/hle/result.h"
 
 namespace Core {
@@ -60,10 +62,13 @@ enum class ProcessStatus {
     DebugBreak,
 };
 
-class Process final : public KSynchronizationObject {
+class KProcess final
+    : public KAutoObjectWithSlabHeapAndContainer<KProcess, KSynchronizationObject> {
+    KERNEL_AUTOOBJECT_TRAITS(KProcess, KSynchronizationObject);
+
 public:
-    explicit Process(Core::System& system);
-    ~Process() override;
+    explicit KProcess(KernelCore& kernel);
+    ~KProcess() override;
 
     enum : u64 {
         /// Lowest allowed process ID for a kernel initial process.
@@ -85,20 +90,8 @@ public:
 
     static constexpr std::size_t RANDOM_ENTROPY_SIZE = 4;
 
-    static std::shared_ptr<Process> Create(Core::System& system, std::string name,
-                                           ProcessType type);
-
-    std::string GetTypeName() const override {
-        return "Process";
-    }
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::Process;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
+    static ResultCode Initialize(KProcess* process, Core::System& system, std::string name,
+                                 ProcessType type);
 
     /// Gets a reference to the process' page table.
     KPageTable& PageTable() {
@@ -111,12 +104,12 @@ public:
     }
 
     /// Gets a reference to the process' handle table.
-    HandleTable& GetHandleTable() {
+    KHandleTable& GetHandleTable() {
         return handle_table;
     }
 
     /// Gets a const reference to the process' handle table.
-    const HandleTable& GetHandleTable() const {
+    const KHandleTable& GetHandleTable() const {
         return handle_table;
     }
 
@@ -167,7 +160,7 @@ public:
     }
 
     /// Gets the resource limit descriptor for this process
-    std::shared_ptr<KResourceLimit> GetResourceLimit() const;
+    KResourceLimit* GetResourceLimit() const;
 
     /// Gets the ideal CPU core ID for this process
     u8 GetIdealCoreId() const {
@@ -338,9 +331,19 @@ public:
 
     void LoadModule(CodeSet code_set, VAddr base_addr);
 
-    bool IsSignaled() const override;
+    virtual bool IsInitialized() const override {
+        return is_initialized;
+    }
+
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
+
+    virtual void Finalize();
+
+    virtual u64 GetId() const override final {
+        return GetProcessID();
+    }
 
-    void Finalize() override {}
+    virtual bool IsSignaled() const override;
 
     void PinCurrentThread();
     void UnpinCurrentThread();
@@ -349,6 +352,9 @@ public:
         return state_lock;
     }
 
+    ResultCode AddSharedMemory(KSharedMemory* shmem, VAddr address, size_t size);
+    void RemoveSharedMemory(KSharedMemory* shmem, VAddr address, size_t size);
+
     ///////////////////////////////////////////////////////////////////////////////////////////////
     // Thread-local storage management
 
@@ -399,7 +405,7 @@ private:
     u32 system_resource_size = 0;
 
     /// Resource limit descriptor for this process
-    std::shared_ptr<KResourceLimit> resource_limit;
+    KResourceLimit* resource_limit{};
 
     /// The ideal CPU core for this process, threads are scheduled on this core by default.
     u8 ideal_core = 0;
@@ -423,7 +429,7 @@ private:
     u64 total_process_running_time_ticks = 0;
 
     /// Per-process handle table for storing created object handles in.
-    HandleTable handle_table;
+    KHandleTable handle_table;
 
     /// Per-process address arbiter.
     KAddressArbiter address_arbiter;
@@ -454,14 +460,12 @@ private:
     /// Process total image size
     std::size_t image_size{};
 
-    /// Name of this process
-    std::string name;
-
     /// Schedule count of this process
     s64 schedule_count{};
 
     bool is_signaled{};
     bool is_suspended{};
+    bool is_initialized{};
 
     std::atomic<s32> num_created_threads{};
     std::atomic<u16> num_threads{};
@@ -474,9 +478,6 @@ private:
     KThread* exception_thread{};
 
     KLightLock state_lock;
-
-    /// System context
-    Core::System& system;
 };
 
 } // namespace Kernel

src/core/hle/kernel/k_readable_event.cpp

@@ -2,21 +2,18 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <algorithm>
 #include "common/assert.h"
-#include "common/common_funcs.h"
-#include "common/logging/log.h"
+#include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/object.h"
 #include "core/hle/kernel/svc_results.h"
 
 namespace Kernel {
 
-KReadableEvent::KReadableEvent(KernelCore& kernel, std::string&& name)
-    : KSynchronizationObject{kernel, std::move(name)} {}
+KReadableEvent::KReadableEvent(KernelCore& kernel) : KSynchronizationObject{kernel} {}
+
 KReadableEvent::~KReadableEvent() = default;
 
 bool KReadableEvent::IsSignaled() const {
@@ -25,6 +22,12 @@ bool KReadableEvent::IsSignaled() const {
     return is_signaled;
 }
 
+void KReadableEvent::Destroy() {
+    if (parent) {
+        parent->Close();
+    }
+}
+
 ResultCode KReadableEvent::Signal() {
     KScopedSchedulerLock lk{kernel};
 

src/core/hle/kernel/k_readable_event.h

@@ -4,8 +4,9 @@
 
 #pragma once
 
+#include "core/hle/kernel/k_auto_object.h"
 #include "core/hle/kernel/k_synchronization_object.h"
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/slab_helpers.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
@@ -13,31 +14,25 @@ namespace Kernel {
 class KernelCore;
 class KEvent;
 
-class KReadableEvent final : public KSynchronizationObject {
+class KReadableEvent : public KSynchronizationObject {
+    KERNEL_AUTOOBJECT_TRAITS(KReadableEvent, KSynchronizationObject);
+
 public:
-    explicit KReadableEvent(KernelCore& kernel, std::string&& name);
+    explicit KReadableEvent(KernelCore& kernel);
     ~KReadableEvent() override;
 
-    std::string GetTypeName() const override {
-        return "KReadableEvent";
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::ReadableEvent;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
+    void Initialize(KEvent* parent_, std::string&& name_) {
+        is_signaled = false;
+        parent = parent_;
+        name = std::move(name_);
     }
 
     KEvent* GetParent() const {
         return parent;
     }
 
-    void Initialize(KEvent* parent_) {
-        is_signaled = false;
-        parent = parent_;
-    }
-
-    bool IsSignaled() const override;
-    void Finalize() override {}
+    virtual bool IsSignaled() const override;
+    virtual void Destroy() override;
 
     ResultCode Signal();
     ResultCode Clear();

src/core/hle/kernel/k_resource_limit.cpp

@@ -10,10 +10,16 @@
 namespace Kernel {
 constexpr s64 DefaultTimeout = 10000000000; // 10 seconds
 
-KResourceLimit::KResourceLimit(KernelCore& kernel, const Core::Timing::CoreTiming& core_timing_)
-    : Object{kernel}, lock{kernel}, cond_var{kernel}, core_timing(core_timing_) {}
+KResourceLimit::KResourceLimit(KernelCore& kernel)
+    : KAutoObjectWithSlabHeapAndContainer{kernel}, lock{kernel}, cond_var{kernel} {}
 KResourceLimit::~KResourceLimit() = default;
 
+void KResourceLimit::Initialize(const Core::Timing::CoreTiming* core_timing_) {
+    core_timing = core_timing_;
+}
+
+void KResourceLimit::Finalize() {}
+
 s64 KResourceLimit::GetLimitValue(LimitableResource which) const {
     const auto index = static_cast<std::size_t>(which);
     s64 value{};
@@ -78,7 +84,7 @@ ResultCode KResourceLimit::SetLimitValue(LimitableResource which, s64 value) {
 }
 
 bool KResourceLimit::Reserve(LimitableResource which, s64 value) {
-    return Reserve(which, value, core_timing.GetGlobalTimeNs().count() + DefaultTimeout);
+    return Reserve(which, value, core_timing->GetGlobalTimeNs().count() + DefaultTimeout);
 }
 
 bool KResourceLimit::Reserve(LimitableResource which, s64 value, s64 timeout) {
@@ -109,7 +115,7 @@ bool KResourceLimit::Reserve(LimitableResource which, s64 value, s64 timeout) {
         }
 
         if (current_hints[index] + value <= limit_values[index] &&
-            (timeout < 0 || core_timing.GetGlobalTimeNs().count() < timeout)) {
+            (timeout < 0 || core_timing->GetGlobalTimeNs().count() < timeout)) {
             waiter_count++;
             cond_var.Wait(&lock, timeout);
             waiter_count--;

src/core/hle/kernel/k_resource_limit.h

@@ -8,7 +8,6 @@
 #include "common/common_types.h"
 #include "core/hle/kernel/k_light_condition_variable.h"
 #include "core/hle/kernel/k_light_lock.h"
-#include "core/hle/kernel/object.h"
 
 union ResultCode;
 
@@ -32,10 +31,16 @@ constexpr bool IsValidResourceType(LimitableResource type) {
     return type < LimitableResource::Count;
 }
 
-class KResourceLimit final : public Object {
+class KResourceLimit final
+    : public KAutoObjectWithSlabHeapAndContainer<KResourceLimit, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KResourceLimit, KAutoObject);
+
 public:
-    explicit KResourceLimit(KernelCore& kernel, const Core::Timing::CoreTiming& core_timing_);
-    ~KResourceLimit();
+    explicit KResourceLimit(KernelCore& kernel);
+    virtual ~KResourceLimit();
+
+    void Initialize(const Core::Timing::CoreTiming* core_timing_);
+    virtual void Finalize() override;
 
     s64 GetLimitValue(LimitableResource which) const;
     s64 GetCurrentValue(LimitableResource which) const;
@@ -49,19 +54,7 @@ public:
     void Release(LimitableResource which, s64 value);
     void Release(LimitableResource which, s64 value, s64 hint);
 
-    std::string GetTypeName() const override {
-        return "KResourceLimit";
-    }
-    std::string GetName() const override {
-        return GetTypeName();
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::ResourceLimit;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    virtual void Finalize() override {}
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
 
 private:
     using ResourceArray = std::array<s64, static_cast<std::size_t>(LimitableResource::Count)>;
@@ -72,6 +65,6 @@ private:
     mutable KLightLock lock;
     s32 waiter_count{};
     KLightConditionVariable cond_var;
-    const Core::Timing::CoreTiming& core_timing;
+    const Core::Timing::CoreTiming* core_timing{};
 };
 } // namespace Kernel

src/core/hle/kernel/k_scheduler.cpp

@@ -15,12 +15,12 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/cpu_manager.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/physical_core.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/time_manager.h"
 
 namespace Kernel {
@@ -71,7 +71,7 @@ u64 KScheduler::UpdateHighestPriorityThread(KThread* highest_thread) {
         }
         if (state.should_count_idle) {
             if (highest_thread != nullptr) {
-                if (Process* process = highest_thread->GetOwnerProcess(); process != nullptr) {
+                if (KProcess* process = highest_thread->GetOwnerProcess(); process != nullptr) {
                     process->SetRunningThread(core_id, highest_thread, state.idle_count);
                 }
             } else {
@@ -104,7 +104,7 @@ u64 KScheduler::UpdateHighestPriorityThreadsImpl(KernelCore& kernel) {
         if (top_thread != nullptr) {
             // If the thread has no waiters, we need to check if the process has a thread pinned.
             if (top_thread->GetNumKernelWaiters() == 0) {
-                if (Process* parent = top_thread->GetOwnerProcess(); parent != nullptr) {
+                if (KProcess* parent = top_thread->GetOwnerProcess(); parent != nullptr) {
                     if (KThread* pinned = parent->GetPinnedThread(static_cast<s32>(core_id));
                         pinned != nullptr && pinned != top_thread) {
                         // We prefer our parent's pinned thread if possible. However, we also don't
@@ -411,7 +411,7 @@ void KScheduler::YieldWithoutCoreMigration(KernelCore& kernel) {
 
     // Get the current thread and process.
     KThread& cur_thread = Kernel::GetCurrentThread(kernel);
-    Process& cur_process = *kernel.CurrentProcess();
+    KProcess& cur_process = *kernel.CurrentProcess();
 
     // If the thread's yield count matches, there's nothing for us to do.
     if (cur_thread.GetYieldScheduleCount() == cur_process.GetScheduledCount()) {
@@ -450,7 +450,7 @@ void KScheduler::YieldWithCoreMigration(KernelCore& kernel) {
 
     // Get the current thread and process.
     KThread& cur_thread = Kernel::GetCurrentThread(kernel);
-    Process& cur_process = *kernel.CurrentProcess();
+    KProcess& cur_process = *kernel.CurrentProcess();
 
     // If the thread's yield count matches, there's nothing for us to do.
     if (cur_thread.GetYieldScheduleCount() == cur_process.GetScheduledCount()) {
@@ -538,7 +538,7 @@ void KScheduler::YieldToAnyThread(KernelCore& kernel) {
 
     // Get the current thread and process.
     KThread& cur_thread = Kernel::GetCurrentThread(kernel);
-    Process& cur_process = *kernel.CurrentProcess();
+    KProcess& cur_process = *kernel.CurrentProcess();
 
     // If the thread's yield count matches, there's nothing for us to do.
     if (cur_thread.GetYieldScheduleCount() == cur_process.GetScheduledCount()) {
@@ -617,7 +617,12 @@ KScheduler::KScheduler(Core::System& system, s32 core_id) : system(system), core
     state.highest_priority_thread = nullptr;
 }
 
-KScheduler::~KScheduler() = default;
+KScheduler::~KScheduler() {
+    if (idle_thread) {
+        idle_thread->Close();
+        idle_thread = nullptr;
+    }
+}
 
 KThread* KScheduler::GetCurrentThread() const {
     if (auto result = current_thread.load(); result) {
@@ -719,7 +724,7 @@ void KScheduler::ScheduleImpl() {
 
     current_thread.store(next_thread);
 
-    Process* const previous_process = system.Kernel().CurrentProcess();
+    KProcess* const previous_process = system.Kernel().CurrentProcess();
 
     UpdateLastContextSwitchTime(previous_thread, previous_process);
 
@@ -775,7 +780,7 @@ void KScheduler::SwitchToCurrent() {
     }
 }
 
-void KScheduler::UpdateLastContextSwitchTime(KThread* thread, Process* process) {
+void KScheduler::UpdateLastContextSwitchTime(KThread* thread, KProcess* process) {
     const u64 prev_switch_ticks = last_context_switch_time;
     const u64 most_recent_switch_ticks = system.CoreTiming().GetCPUTicks();
     const u64 update_ticks = most_recent_switch_ticks - prev_switch_ticks;
@@ -792,13 +797,9 @@ void KScheduler::UpdateLastContextSwitchTime(KThread* thread, Process* process)
 }
 
 void KScheduler::Initialize() {
-    std::string name = "Idle Thread Id:" + std::to_string(core_id);
-    std::function<void(void*)> init_func = Core::CpuManager::GetIdleThreadStartFunc();
-    void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
-    auto thread_res = KThread::CreateThread(
-        system, ThreadType::Main, name, 0, KThread::IdleThreadPriority, 0,
-        static_cast<u32>(core_id), 0, nullptr, std::move(init_func), init_func_parameter);
-    idle_thread = thread_res.Unwrap().get();
+    idle_thread = KThread::Create(system.Kernel());
+    ASSERT(KThread::InitializeIdleThread(system, idle_thread, core_id).IsSuccess());
+    idle_thread->SetName(fmt::format("IdleThread:{}", core_id));
 }
 
 KScopedSchedulerLock::KScopedSchedulerLock(KernelCore& kernel)

src/core/hle/kernel/k_scheduler.h

@@ -24,7 +24,7 @@ class System;
 namespace Kernel {
 
 class KernelCore;
-class Process;
+class KProcess;
 class SchedulerLock;
 class KThread;
 
@@ -165,7 +165,7 @@ private:
      * most recent tick count retrieved. No special arithmetic is
      * applied to it.
      */
-    void UpdateLastContextSwitchTime(KThread* thread, Process* process);
+    void UpdateLastContextSwitchTime(KThread* thread, KProcess* process);
 
     static void OnSwitch(void* this_scheduler);
     void SwitchToCurrent();
@@ -173,12 +173,12 @@ private:
     KThread* prev_thread{};
     std::atomic<KThread*> current_thread{};
 
-    KThread* idle_thread;
+    KThread* idle_thread{};
 
     std::shared_ptr<Common::Fiber> switch_fiber{};
 
     struct SchedulingState {
-        std::atomic<bool> needs_scheduling;
+        std::atomic<bool> needs_scheduling{};
         bool interrupt_task_thread_runnable{};
         bool should_count_idle{};
         u64 idle_count{};

src/core/hle/kernel/k_scoped_resource_reservation.h

@@ -8,15 +8,14 @@
 #pragma once
 
 #include "common/common_types.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_resource_limit.h"
-#include "core/hle/kernel/process.h"
 
 namespace Kernel {
 
 class KScopedResourceReservation {
 public:
-    explicit KScopedResourceReservation(std::shared_ptr<KResourceLimit> l, LimitableResource r,
-                                        s64 v, s64 timeout)
+    explicit KScopedResourceReservation(KResourceLimit* l, LimitableResource r, s64 v, s64 timeout)
         : resource_limit(std::move(l)), value(v), resource(r) {
         if (resource_limit && value) {
             success = resource_limit->Reserve(resource, value, timeout);
@@ -25,8 +24,7 @@ public:
         }
     }
 
-    explicit KScopedResourceReservation(std::shared_ptr<KResourceLimit> l, LimitableResource r,
-                                        s64 v = 1)
+    explicit KScopedResourceReservation(KResourceLimit* l, LimitableResource r, s64 v = 1)
         : resource_limit(std::move(l)), value(v), resource(r) {
         if (resource_limit && value) {
             success = resource_limit->Reserve(resource, value);
@@ -35,10 +33,10 @@ public:
         }
     }
 
-    explicit KScopedResourceReservation(const Process* p, LimitableResource r, s64 v, s64 t)
+    explicit KScopedResourceReservation(const KProcess* p, LimitableResource r, s64 v, s64 t)
         : KScopedResourceReservation(p->GetResourceLimit(), r, v, t) {}
 
-    explicit KScopedResourceReservation(const Process* p, LimitableResource r, s64 v = 1)
+    explicit KScopedResourceReservation(const KProcess* p, LimitableResource r, s64 v = 1)
         : KScopedResourceReservation(p->GetResourceLimit(), r, v) {}
 
     ~KScopedResourceReservation() noexcept {
@@ -58,7 +56,7 @@ public:
     }
 
 private:
-    std::shared_ptr<KResourceLimit> resource_limit;
+    KResourceLimit* resource_limit{};
     s64 value;
     LimitableResource resource;
     bool success;

src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h

@@ -8,7 +8,7 @@
 #pragma once
 
 #include "common/common_types.h"
-#include "core/hle/kernel/handle_table.h"
+#include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/time_manager.h"

src/core/hle/kernel/k_server_port.cpp

@@ -0,0 +1,104 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <tuple>
+#include "common/assert.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_port.h"
+#include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_server_port.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/svc_results.h"
+
+namespace Kernel {
+
+KServerPort::KServerPort(KernelCore& kernel) : KSynchronizationObject{kernel} {}
+KServerPort::~KServerPort() = default;
+
+void KServerPort::Initialize(KPort* parent_, std::string&& name_) {
+    // Set member variables.
+    parent = parent_;
+    name = std::move(name_);
+}
+
+bool KServerPort::IsLight() const {
+    return this->GetParent()->IsLight();
+}
+
+void KServerPort::CleanupSessions() {
+    // Ensure our preconditions are met.
+    if (this->IsLight()) {
+        UNIMPLEMENTED();
+    }
+
+    // Cleanup the session list.
+    while (true) {
+        // Get the last session in the list
+        KServerSession* session = nullptr;
+        {
+            KScopedSchedulerLock sl{kernel};
+            if (!session_list.empty()) {
+                session = std::addressof(session_list.front());
+                session_list.pop_front();
+            }
+        }
+
+        // Close the session.
+        if (session != nullptr) {
+            session->Close();
+        } else {
+            break;
+        }
+    }
+}
+
+void KServerPort::Destroy() {
+    // Note with our parent that we're closed.
+    parent->OnServerClosed();
+
+    // Perform necessary cleanup of our session lists.
+    this->CleanupSessions();
+
+    // Close our reference to our parent.
+    parent->Close();
+}
+
+bool KServerPort::IsSignaled() const {
+    if (this->IsLight()) {
+        UNIMPLEMENTED();
+        return false;
+    } else {
+        return !session_list.empty();
+    }
+}
+
+void KServerPort::EnqueueSession(KServerSession* session) {
+    ASSERT(!this->IsLight());
+
+    KScopedSchedulerLock sl{kernel};
+
+    // Add the session to our queue.
+    session_list.push_back(*session);
+    if (session_list.size() == 1) {
+        this->NotifyAvailable();
+    }
+}
+
+KServerSession* KServerPort::AcceptSession() {
+    ASSERT(!this->IsLight());
+
+    KScopedSchedulerLock sl{kernel};
+
+    // Return the first session in the list.
+    if (session_list.empty()) {
+        return nullptr;
+    }
+
+    KServerSession* session = std::addressof(session_list.front());
+    session_list.pop_front();
+    return session;
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_server_port.h

@@ -0,0 +1,80 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include <boost/intrusive/list.hpp>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KernelCore;
+class KPort;
+class SessionRequestHandler;
+
+class KServerPort final : public KSynchronizationObject {
+    KERNEL_AUTOOBJECT_TRAITS(KServerPort, KSynchronizationObject);
+
+private:
+    using SessionList = boost::intrusive::list<KServerSession>;
+
+public:
+    explicit KServerPort(KernelCore& kernel);
+    virtual ~KServerPort() override;
+
+    using HLEHandler = std::shared_ptr<SessionRequestHandler>;
+
+    void Initialize(KPort* parent_, std::string&& name_);
+
+    /// Whether or not this server port has an HLE handler available.
+    bool HasHLEHandler() const {
+        return hle_handler != nullptr;
+    }
+
+    /// Gets the HLE handler for this port.
+    HLEHandler GetHLEHandler() const {
+        return hle_handler;
+    }
+
+    /**
+     * Sets the HLE handler template for the port. ServerSessions crated by connecting to this port
+     * will inherit a reference to this handler.
+     */
+    void SetHleHandler(HLEHandler hle_handler_) {
+        hle_handler = std::move(hle_handler_);
+    }
+
+    void EnqueueSession(KServerSession* pending_session);
+
+    KServerSession* AcceptSession();
+
+    const KPort* GetParent() const {
+        return parent;
+    }
+
+    bool IsLight() const;
+
+    // Overridden virtual functions.
+    virtual void Destroy() override;
+    virtual bool IsSignaled() const override;
+
+private:
+    void CleanupSessions();
+
+private:
+    SessionList session_list;
+    HLEHandler hle_handler;
+    KPort* parent{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/server_session.cpp → src/core/hle/kernel/k_server_session.cpp

@@ -10,49 +10,39 @@
 #include "common/logging/log.h"
 #include "core/core_timing.h"
 #include "core/hle/ipc_helpers.h"
-#include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/client_session.h"
-#include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_handle_table.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/k_session.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
-#include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/session.h"
 #include "core/memory.h"
 
 namespace Kernel {
 
-ServerSession::ServerSession(KernelCore& kernel) : KSynchronizationObject{kernel} {}
+KServerSession::KServerSession(KernelCore& kernel) : KSynchronizationObject{kernel} {}
 
-ServerSession::~ServerSession() {
+KServerSession::~KServerSession() {
     kernel.ReleaseServiceThread(service_thread);
 }
 
-ResultVal<std::shared_ptr<ServerSession>> ServerSession::Create(KernelCore& kernel,
-                                                                std::shared_ptr<Session> parent,
-                                                                std::string name) {
-    std::shared_ptr<ServerSession> session{std::make_shared<ServerSession>(kernel)};
-
-    session->name = std::move(name);
-    session->parent = std::move(parent);
-    session->service_thread = kernel.CreateServiceThread(session->name);
-
-    return MakeResult(std::move(session));
+void KServerSession::Initialize(KSession* parent_, std::string&& name_) {
+    // Set member variables.
+    parent = parent_;
+    name = std::move(name_);
+    service_thread = kernel.CreateServiceThread(name);
 }
 
-bool ServerSession::IsSignaled() const {
-    // Closed sessions should never wait, an error will be returned from svcReplyAndReceive.
-    if (!parent->Client()) {
-        return true;
-    }
+void KServerSession::Destroy() {
+    parent->OnServerClosed();
 
-    // Wait if we have no pending requests, or if we're currently handling a request.
-    return !pending_requesting_threads.empty() && currently_handling == nullptr;
+    parent->Close();
 }
 
-void ServerSession::ClientDisconnected() {
+void KServerSession::OnClientClosed() {
     // We keep a shared pointer to the hle handler to keep it alive throughout
     // the call to ClientDisconnected, as ClientDisconnected invalidates the
     // hle_handler member itself during the course of the function executing.
@@ -60,24 +50,31 @@ void ServerSession::ClientDisconnected() {
     if (handler) {
         // Note that after this returns, this server session's hle_handler is
         // invalidated (set to null).
-        handler->ClientDisconnected(SharedFrom(this));
+        handler->ClientDisconnected(this);
+    }
+}
+
+bool KServerSession::IsSignaled() const {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
+
+    // If the client is closed, we're always signaled.
+    if (parent->IsClientClosed()) {
+        return true;
     }
 
-    // Clean up the list of client threads with pending requests, they are unneeded now that the
-    // client endpoint is closed.
-    pending_requesting_threads.clear();
-    currently_handling = nullptr;
+    // Otherwise, we're signaled if we have a request and aren't handling one.
+    return false;
 }
 
-void ServerSession::AppendDomainRequestHandler(std::shared_ptr<SessionRequestHandler> handler) {
+void KServerSession::AppendDomainRequestHandler(std::shared_ptr<SessionRequestHandler> handler) {
     domain_request_handlers.push_back(std::move(handler));
 }
 
-std::size_t ServerSession::NumDomainRequestHandlers() const {
+std::size_t KServerSession::NumDomainRequestHandlers() const {
     return domain_request_handlers.size();
 }
 
-ResultCode ServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& context) {
+ResultCode KServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& context) {
     if (!context.HasDomainMessageHeader()) {
         return RESULT_SUCCESS;
     }
@@ -116,23 +113,21 @@ ResultCode ServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& con
     return RESULT_SUCCESS;
 }
 
-ResultCode ServerSession::QueueSyncRequest(std::shared_ptr<KThread> thread,
-                                           Core::Memory::Memory& memory) {
+ResultCode KServerSession::QueueSyncRequest(KThread* thread, Core::Memory::Memory& memory) {
     u32* cmd_buf{reinterpret_cast<u32*>(memory.GetPointer(thread->GetTLSAddress()))};
-    auto context =
-        std::make_shared<HLERequestContext>(kernel, memory, SharedFrom(this), std::move(thread));
+    auto context = std::make_shared<HLERequestContext>(kernel, memory, this, thread);
 
     context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf);
 
     if (auto strong_ptr = service_thread.lock()) {
-        strong_ptr->QueueSyncRequest(*this, std::move(context));
+        strong_ptr->QueueSyncRequest(*parent, std::move(context));
         return RESULT_SUCCESS;
     }
 
     return RESULT_SUCCESS;
 }
 
-ResultCode ServerSession::CompleteSyncRequest(HLERequestContext& context) {
+ResultCode KServerSession::CompleteSyncRequest(HLERequestContext& context) {
     ResultCode result = RESULT_SUCCESS;
     // If the session has been converted to a domain, handle the domain request
     if (IsDomain() && context.HasDomainMessageHeader()) {
@@ -161,10 +156,9 @@ ResultCode ServerSession::CompleteSyncRequest(HLERequestContext& context) {
     return result;
 }
 
-ResultCode ServerSession::HandleSyncRequest(std::shared_ptr<KThread> thread,
-                                            Core::Memory::Memory& memory,
-                                            Core::Timing::CoreTiming& core_timing) {
-    return QueueSyncRequest(std::move(thread), memory);
+ResultCode KServerSession::HandleSyncRequest(KThread* thread, Core::Memory::Memory& memory,
+                                             Core::Timing::CoreTiming& core_timing) {
+    return QueueSyncRequest(thread, memory);
 }
 
 } // namespace Kernel

src/core/hle/kernel/server_session.h → src/core/hle/kernel/k_server_session.h

@@ -9,6 +9,8 @@
 #include <utility>
 #include <vector>
 
+#include <boost/intrusive/list.hpp>
+
 #include "common/threadsafe_queue.h"
 #include "core/hle/kernel/k_synchronization_object.h"
 #include "core/hle/kernel/service_thread.h"
@@ -27,55 +29,35 @@ namespace Kernel {
 
 class HLERequestContext;
 class KernelCore;
-class Session;
+class KSession;
 class SessionRequestHandler;
 class KThread;
 
-/**
- * Kernel object representing the server endpoint of an IPC session. Sessions are the basic CTR-OS
- * primitive for communication between different processes, and are used to implement service calls
- * to the various system services.
- *
- * To make a service call, the client must write the command header and parameters to the buffer
- * located at offset 0x80 of the TLS (Thread-Local Storage) area, then execute a SendSyncRequest
- * SVC call with its ClientSession handle. The kernel will read the command header, using it to
- * marshall the parameters to the process at the server endpoint of the session.
- * After the server replies to the request, the response is marshalled back to the caller's
- * TLS buffer and control is transferred back to it.
- */
-class ServerSession final : public KSynchronizationObject {
+class KServerSession final : public KSynchronizationObject,
+                             public boost::intrusive::list_base_hook<> {
+    KERNEL_AUTOOBJECT_TRAITS(KServerSession, KSynchronizationObject);
+
     friend class ServiceThread;
 
 public:
-    explicit ServerSession(KernelCore& kernel);
-    ~ServerSession() override;
+    explicit KServerSession(KernelCore& kernel);
+    virtual ~KServerSession() override;
 
-    friend class Session;
+    virtual void Destroy() override;
 
-    static ResultVal<std::shared_ptr<ServerSession>> Create(KernelCore& kernel,
-                                                            std::shared_ptr<Session> parent,
-                                                            std::string name = "Unknown");
+    void Initialize(KSession* parent_, std::string&& name_);
 
-    std::string GetTypeName() const override {
-        return "ServerSession";
+    KSession* GetParent() {
+        return parent;
     }
 
-    std::string GetName() const override {
-        return name;
+    const KSession* GetParent() const {
+        return parent;
     }
 
-    static constexpr HandleType HANDLE_TYPE = HandleType::ServerSession;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
+    virtual bool IsSignaled() const override;
 
-    Session* GetParent() {
-        return parent.get();
-    }
-
-    const Session* GetParent() const {
-        return parent.get();
-    }
+    void OnClientClosed();
 
     /**
      * Sets the HLE handler for the session. This handler will be called to service IPC requests
@@ -95,12 +77,9 @@ public:
      *
      * @returns ResultCode from the operation.
      */
-    ResultCode HandleSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory,
+    ResultCode HandleSyncRequest(KThread* thread, Core::Memory::Memory& memory,
                                  Core::Timing::CoreTiming& core_timing);
 
-    /// Called when a client disconnection occurs.
-    void ClientDisconnected();
-
     /// Adds a new domain request handler to the collection of request handlers within
     /// this ServerSession instance.
     void AppendDomainRequestHandler(std::shared_ptr<SessionRequestHandler> handler);
@@ -124,13 +103,9 @@ public:
         convert_to_domain = true;
     }
 
-    bool IsSignaled() const override;
-
-    void Finalize() override {}
-
 private:
     /// Queues a sync request from the emulated application.
-    ResultCode QueueSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory);
+    ResultCode QueueSyncRequest(KThread* thread, Core::Memory::Memory& memory);
 
     /// Completes a sync request from the emulated application.
     ResultCode CompleteSyncRequest(HLERequestContext& context);
@@ -139,33 +114,20 @@ private:
     /// object handle.
     ResultCode HandleDomainSyncRequest(Kernel::HLERequestContext& context);
 
-    /// The parent session, which links to the client endpoint.
-    std::shared_ptr<Session> parent;
-
     /// This session's HLE request handler (applicable when not a domain)
     std::shared_ptr<SessionRequestHandler> hle_handler;
 
     /// This is the list of domain request handlers (after conversion to a domain)
     std::vector<std::shared_ptr<SessionRequestHandler>> domain_request_handlers;
 
-    /// List of threads that are pending a response after a sync request. This list is processed in
-    /// a LIFO manner, thus, the last request will be dispatched first.
-    /// TODO(Subv): Verify if this is indeed processed in LIFO using a hardware test.
-    std::vector<std::shared_ptr<KThread>> pending_requesting_threads;
-
-    /// Thread whose request is currently being handled. A request is considered "handled" when a
-    /// response is sent via svcReplyAndReceive.
-    /// TODO(Subv): Find a better name for this.
-    std::shared_ptr<KThread> currently_handling;
-
     /// When set to True, converts the session to a domain at the end of the command
     bool convert_to_domain{};
 
-    /// The name of this session (optional)
-    std::string name;
-
     /// Thread to dispatch service requests
     std::weak_ptr<ServiceThread> service_thread;
+
+    /// KSession that owns this KServerSession
+    KSession* parent{};
 };
 
 } // namespace Kernel

src/core/hle/kernel/k_session.cpp

@@ -0,0 +1,85 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_scoped_resource_reservation.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/k_session.h"
+
+namespace Kernel {
+
+KSession::KSession(KernelCore& kernel)
+    : KAutoObjectWithSlabHeapAndContainer{kernel}, server{kernel}, client{kernel} {}
+KSession::~KSession() = default;
+
+void KSession::Initialize(KClientPort* port_, const std::string& name_) {
+    // Increment reference count.
+    // Because reference count is one on creation, this will result
+    // in a reference count of two. Thus, when both server and client are closed
+    // this object will be destroyed.
+    Open();
+
+    // Create our sub sessions.
+    KAutoObject::Create(std::addressof(server));
+    KAutoObject::Create(std::addressof(client));
+
+    // Initialize our sub sessions.
+    server.Initialize(this, name_ + ":Server");
+    client.Initialize(this, name_ + ":Client");
+
+    // Set state and name.
+    SetState(State::Normal);
+    name = name_;
+
+    // Set our owner process.
+    process = kernel.CurrentProcess();
+    process->Open();
+
+    // Set our port.
+    port = port_;
+    if (port != nullptr) {
+        port->Open();
+    }
+
+    // Mark initialized.
+    initialized = true;
+}
+
+void KSession::Finalize() {
+    if (port == nullptr) {
+        return;
+    }
+
+    port->OnSessionFinalized();
+    port->Close();
+}
+
+void KSession::OnServerClosed() {
+    if (GetState() != State::Normal) {
+        return;
+    }
+
+    SetState(State::ServerClosed);
+    client.OnServerClosed();
+}
+
+void KSession::OnClientClosed() {
+    if (GetState() != State::Normal) {
+        return;
+    }
+
+    SetState(State::ClientClosed);
+    server.OnClientClosed();
+}
+
+void KSession::PostDestroy(uintptr_t arg) {
+    // Release the session count resource the owner process holds.
+    KProcess* owner = reinterpret_cast<KProcess*>(arg);
+    owner->GetResourceLimit()->Release(LimitableResource::Sessions, 1);
+    owner->Close();
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_session.h

@@ -0,0 +1,96 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <atomic>
+#include <string>
+
+#include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_server_session.h"
+#include "core/hle/kernel/slab_helpers.h"
+
+namespace Kernel {
+
+class KSession final : public KAutoObjectWithSlabHeapAndContainer<KSession, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KSession, KAutoObject);
+
+public:
+    explicit KSession(KernelCore& kernel);
+    virtual ~KSession() override;
+
+    void Initialize(KClientPort* port_, const std::string& name_);
+
+    virtual void Finalize() override;
+
+    virtual bool IsInitialized() const override {
+        return initialized;
+    }
+
+    virtual uintptr_t GetPostDestroyArgument() const override {
+        return reinterpret_cast<uintptr_t>(process);
+    }
+
+    static void PostDestroy(uintptr_t arg);
+
+    void OnServerClosed();
+
+    void OnClientClosed();
+
+    bool IsServerClosed() const {
+        return this->GetState() != State::Normal;
+    }
+
+    bool IsClientClosed() const {
+        return this->GetState() != State::Normal;
+    }
+
+    KClientSession& GetClientSession() {
+        return client;
+    }
+
+    KServerSession& GetServerSession() {
+        return server;
+    }
+
+    const KClientSession& GetClientSession() const {
+        return client;
+    }
+
+    const KServerSession& GetServerSession() const {
+        return server;
+    }
+
+    const KClientPort* GetParent() const {
+        return port;
+    }
+
+private:
+    enum class State : u8 {
+        Invalid = 0,
+        Normal = 1,
+        ClientClosed = 2,
+        ServerClosed = 3,
+    };
+
+private:
+    void SetState(State state) {
+        atomic_state = static_cast<u8>(state);
+    }
+
+    State GetState() const {
+        return static_cast<State>(atomic_state.load(std::memory_order_relaxed));
+    }
+
+private:
+    KServerSession server;
+    KClientSession client;
+    std::atomic<std::underlying_type_t<State>> atomic_state{
+        static_cast<std::underlying_type_t<State>>(State::Invalid)};
+    KClientPort* port{};
+    KProcess* process{};
+    bool initialized{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_shared_memory.cpp

@@ -8,50 +8,74 @@
 #include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/k_shared_memory.h"
 #include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/svc_results.h"
 
 namespace Kernel {
 
-KSharedMemory::KSharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory)
-    : Object{kernel}, device_memory{device_memory} {}
+KSharedMemory::KSharedMemory(KernelCore& kernel) : KAutoObjectWithSlabHeapAndContainer{kernel} {}
 
 KSharedMemory::~KSharedMemory() {
     kernel.GetSystemResourceLimit()->Release(LimitableResource::PhysicalMemory, size);
 }
 
-std::shared_ptr<KSharedMemory> KSharedMemory::Create(
-    KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process,
-    KPageLinkedList&& page_list, KMemoryPermission owner_permission,
-    KMemoryPermission user_permission, PAddr physical_address, std::size_t size, std::string name) {
+ResultCode KSharedMemory::Initialize(KernelCore& kernel_, Core::DeviceMemory& device_memory_,
+                                     KProcess* owner_process_, KPageLinkedList&& page_list_,
+                                     Svc::MemoryPermission owner_permission_,
+                                     Svc::MemoryPermission user_permission_,
+                                     PAddr physical_address_, std::size_t size_,
+                                     std::string name_) {
+    // Set members.
+    owner_process = owner_process_;
+    device_memory = &device_memory_;
+    page_list = std::move(page_list_);
+    owner_permission = owner_permission_;
+    user_permission = user_permission_;
+    physical_address = physical_address_;
+    size = size_;
+    name = name_;
 
-    const auto resource_limit = kernel.GetSystemResourceLimit();
-    KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
-                                                  size);
-    ASSERT(memory_reservation.Succeeded());
+    // Get the resource limit.
+    KResourceLimit* reslimit = kernel.GetSystemResourceLimit();
 
-    std::shared_ptr<KSharedMemory> shared_memory{
-        std::make_shared<KSharedMemory>(kernel, device_memory)};
-
-    shared_memory->owner_process = owner_process;
-    shared_memory->page_list = std::move(page_list);
-    shared_memory->owner_permission = owner_permission;
-    shared_memory->user_permission = user_permission;
-    shared_memory->physical_address = physical_address;
-    shared_memory->size = size;
-    shared_memory->name = name;
+    // Reserve memory for ourselves.
+    KScopedResourceReservation memory_reservation(reslimit, LimitableResource::PhysicalMemory,
+                                                  size_);
+    R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
 
+    // Commit our reservation.
     memory_reservation.Commit();
-    return shared_memory;
+
+    // Set our resource limit.
+    resource_limit = reslimit;
+    resource_limit->Open();
+
+    // Mark initialized.
+    is_initialized = true;
+
+    // Clear all pages in the memory.
+    std::memset(device_memory_.GetPointer(physical_address_), 0, size_);
+
+    return RESULT_SUCCESS;
+}
+
+void KSharedMemory::Finalize() {
+    // Release the memory reservation.
+    resource_limit->Release(LimitableResource::PhysicalMemory, size);
+    resource_limit->Close();
+
+    // Perform inherited finalization.
+    KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList>::Finalize();
 }
 
-ResultCode KSharedMemory::Map(Process& target_process, VAddr address, std::size_t size,
-                              KMemoryPermission permissions) {
+ResultCode KSharedMemory::Map(KProcess& target_process, VAddr address, std::size_t size,
+                              Svc::MemoryPermission permissions) {
     const u64 page_count{(size + PageSize - 1) / PageSize};
 
     if (page_list.GetNumPages() != page_count) {
         UNIMPLEMENTED_MSG("Page count does not match");
     }
 
-    const KMemoryPermission expected =
+    const Svc::MemoryPermission expected =
         &target_process == owner_process ? owner_permission : user_permission;
 
     if (permissions != expected) {
@@ -59,7 +83,17 @@ ResultCode KSharedMemory::Map(Process& target_process, VAddr address, std::size_
     }
 
     return target_process.PageTable().MapPages(address, page_list, KMemoryState::Shared,
-                                               permissions);
+                                               ConvertToKMemoryPermission(permissions));
+}
+
+ResultCode KSharedMemory::Unmap(KProcess& target_process, VAddr address, std::size_t size) {
+    const u64 page_count{(size + PageSize - 1) / PageSize};
+
+    if (page_list.GetNumPages() != page_count) {
+        UNIMPLEMENTED_MSG("Page count does not match");
+    }
+
+    return target_process.PageTable().UnmapPages(address, page_list, KMemoryState::Shared);
 }
 
 } // namespace Kernel

src/core/hle/kernel/k_shared_memory.h

@@ -11,37 +11,27 @@
 #include "core/device_memory.h"
 #include "core/hle/kernel/k_memory_block.h"
 #include "core/hle/kernel/k_page_linked_list.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/slab_helpers.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
 
 class KernelCore;
 
-class KSharedMemory final : public Object {
+class KSharedMemory final
+    : public KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KSharedMemory, KAutoObject);
+
 public:
-    explicit KSharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory);
+    explicit KSharedMemory(KernelCore& kernel);
     ~KSharedMemory() override;
 
-    static std::shared_ptr<KSharedMemory> Create(
-        KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process,
-        KPageLinkedList&& page_list, KMemoryPermission owner_permission,
-        KMemoryPermission user_permission, PAddr physical_address, std::size_t size,
-        std::string name);
-
-    std::string GetTypeName() const override {
-        return "SharedMemory";
-    }
-
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::SharedMemory;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
+    ResultCode Initialize(KernelCore& kernel_, Core::DeviceMemory& device_memory_,
+                          KProcess* owner_process_, KPageLinkedList&& page_list_,
+                          Svc::MemoryPermission owner_permission_,
+                          Svc::MemoryPermission user_permission_, PAddr physical_address_,
+                          std::size_t size_, std::string name_);
 
     /**
      * Maps a shared memory block to an address in the target process' address space
@@ -50,8 +40,16 @@ public:
      * @param size Size of the shared memory block to map
      * @param permissions Memory block map permissions (specified by SVC field)
      */
-    ResultCode Map(Process& target_process, VAddr address, std::size_t size,
-                   KMemoryPermission permissions);
+    ResultCode Map(KProcess& target_process, VAddr address, std::size_t size,
+                   Svc::MemoryPermission permissions);
+
+    /**
+     * Unmaps a shared memory block from an address in the target process' address space
+     * @param target_process Process on which to unmap the memory block
+     * @param address Address in system memory to unmap shared memory block
+     * @param size Size of the shared memory block to unmap
+     */
+    ResultCode Unmap(KProcess& target_process, VAddr address, std::size_t size);
 
     /**
      * Gets a pointer to the shared memory block
@@ -59,7 +57,7 @@ public:
      * @return A pointer to the shared memory block from the specified offset
      */
     u8* GetPointer(std::size_t offset = 0) {
-        return device_memory.GetPointer(physical_address + offset);
+        return device_memory->GetPointer(physical_address + offset);
     }
 
     /**
@@ -68,20 +66,26 @@ public:
      * @return A pointer to the shared memory block from the specified offset
      */
     const u8* GetPointer(std::size_t offset = 0) const {
-        return device_memory.GetPointer(physical_address + offset);
+        return device_memory->GetPointer(physical_address + offset);
     }
 
-    void Finalize() override {}
+    virtual void Finalize() override;
+
+    virtual bool IsInitialized() const override {
+        return is_initialized;
+    }
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
 
 private:
-    Core::DeviceMemory& device_memory;
-    Process* owner_process{};
+    Core::DeviceMemory* device_memory;
+    KProcess* owner_process{};
     KPageLinkedList page_list;
-    KMemoryPermission owner_permission{};
-    KMemoryPermission user_permission{};
+    Svc::MemoryPermission owner_permission{};
+    Svc::MemoryPermission user_permission{};
     PAddr physical_address{};
     std::size_t size{};
-    std::string name;
+    KResourceLimit* resource_limit{};
+    bool is_initialized{};
 };
 
 } // namespace Kernel

src/core/hle/kernel/k_slab_heap.h

@@ -97,6 +97,7 @@ public:
     void FreeImpl(void* obj) {
         // Don't allow freeing an object that wasn't allocated from this heap
         ASSERT(Contains(reinterpret_cast<uintptr_t>(obj)));
+
         impl.Free(obj);
     }
 
@@ -148,6 +149,14 @@ public:
         return obj;
     }
 
+    T* AllocateWithKernel(KernelCore& kernel) {
+        T* obj = static_cast<T*>(AllocateImpl());
+        if (obj != nullptr) {
+            new (obj) T(kernel);
+        }
+        return obj;
+    }
+
     void Free(T* obj) {
         FreeImpl(obj);
     }

src/core/hle/kernel/k_synchronization_object.cpp

@@ -13,6 +13,11 @@
 
 namespace Kernel {
 
+void KSynchronizationObject::Finalize() {
+    this->OnFinalizeSynchronizationObject();
+    KAutoObject::Finalize();
+}
+
 ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
                                         KSynchronizationObject** objects, const s32 num_objects,
                                         s64 timeout) {
@@ -130,10 +135,7 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
     return wait_result;
 }
 
-KSynchronizationObject::KSynchronizationObject(KernelCore& kernel) : Object{kernel} {}
-
-KSynchronizationObject::KSynchronizationObject(KernelCore& kernel, std::string&& name)
-    : Object{kernel, std::move(name)} {}
+KSynchronizationObject::KSynchronizationObject(KernelCore& kernel) : KAutoObjectWithList{kernel} {}
 
 KSynchronizationObject::~KSynchronizationObject() = default;
 

src/core/hle/kernel/k_synchronization_object.h

@@ -6,7 +6,7 @@
 
 #include <vector>
 
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/k_auto_object.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
@@ -16,7 +16,9 @@ class Synchronization;
 class KThread;
 
 /// Class that represents a Kernel object that a thread can be waiting on
-class KSynchronizationObject : public Object {
+class KSynchronizationObject : public KAutoObjectWithList {
+    KERNEL_AUTOOBJECT_TRAITS(KSynchronizationObject, KAutoObject);
+
 public:
     struct ThreadListNode {
         ThreadListNode* next{};
@@ -27,15 +29,18 @@ public:
                                          KSynchronizationObject** objects, const s32 num_objects,
                                          s64 timeout);
 
+    virtual void Finalize() override;
+
     [[nodiscard]] virtual bool IsSignaled() const = 0;
 
     [[nodiscard]] std::vector<KThread*> GetWaitingThreadsForDebugging() const;
 
 protected:
     explicit KSynchronizationObject(KernelCore& kernel);
-    explicit KSynchronizationObject(KernelCore& kernel, std::string&& name);
     virtual ~KSynchronizationObject();
 
+    virtual void OnFinalizeSynchronizationObject() {}
+
     void NotifyAvailable(ResultCode result);
     void NotifyAvailable() {
         return this->NotifyAvailable(RESULT_SUCCESS);
@@ -46,14 +51,4 @@ private:
     ThreadListNode* thread_list_tail{};
 };
 
-// Specialization of DynamicObjectCast for KSynchronizationObjects
-template <>
-inline std::shared_ptr<KSynchronizationObject> DynamicObjectCast<KSynchronizationObject>(
-    std::shared_ptr<Object> object) {
-    if (object != nullptr && object->IsWaitable()) {
-        return std::static_pointer_cast<KSynchronizationObject>(object);
-    }
-    return nullptr;
-}
-
 } // namespace Kernel

src/core/hle/kernel/k_thread.cpp

@@ -18,17 +18,16 @@
 #include "core/core.h"
 #include "core/cpu_manager.h"
 #include "core/hardware_properties.h"
-#include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_condition_variable.h"
+#include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_memory_layout.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/k_thread_queue.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/hle/result.h"
@@ -62,11 +61,11 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context,
 namespace Kernel {
 
 KThread::KThread(KernelCore& kernel)
-    : KSynchronizationObject{kernel}, activity_pause_lock{kernel} {}
+    : KAutoObjectWithSlabHeapAndContainer{kernel}, activity_pause_lock{kernel} {}
 KThread::~KThread() = default;
 
 ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack_top, s32 prio,
-                               s32 virt_core, Process* owner, ThreadType type) {
+                               s32 virt_core, KProcess* owner, ThreadType type) {
     // Assert parameters are valid.
     ASSERT((type == ThreadType::Main) ||
            (Svc::HighestThreadPriority <= prio && prio <= Svc::LowestThreadPriority));
@@ -177,6 +176,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
     // Set parent, if relevant.
     if (owner != nullptr) {
         parent = owner;
+        parent->Open();
         parent->IncrementThreadCount();
     }
 
@@ -209,14 +209,56 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
 }
 
 ResultCode KThread::InitializeThread(KThread* thread, KThreadFunction func, uintptr_t arg,
-                                     VAddr user_stack_top, s32 prio, s32 core, Process* owner,
-                                     ThreadType type) {
+                                     VAddr user_stack_top, s32 prio, s32 core, KProcess* owner,
+                                     ThreadType type, std::function<void(void*)>&& init_func,
+                                     void* init_func_parameter) {
     // Initialize the thread.
     R_TRY(thread->Initialize(func, arg, user_stack_top, prio, core, owner, type));
 
+    // Initialize host context.
+    thread->host_context =
+        std::make_shared<Common::Fiber>(std::move(init_func), init_func_parameter);
+
     return RESULT_SUCCESS;
 }
 
+ResultCode KThread::InitializeDummyThread(KThread* thread) {
+    return thread->Initialize({}, {}, {}, DefaultThreadPriority, 3, {}, ThreadType::Main);
+}
+
+ResultCode KThread::InitializeIdleThread(Core::System& system, KThread* thread, s32 virt_core) {
+    return InitializeThread(thread, {}, {}, {}, IdleThreadPriority, virt_core, {}, ThreadType::Main,
+                            Core::CpuManager::GetIdleThreadStartFunc(),
+                            system.GetCpuManager().GetStartFuncParamater());
+}
+
+ResultCode KThread::InitializeHighPriorityThread(Core::System& system, KThread* thread,
+                                                 KThreadFunction func, uintptr_t arg,
+                                                 s32 virt_core) {
+    return InitializeThread(thread, func, arg, {}, {}, virt_core, nullptr, ThreadType::HighPriority,
+                            Core::CpuManager::GetSuspendThreadStartFunc(),
+                            system.GetCpuManager().GetStartFuncParamater());
+}
+
+ResultCode KThread::InitializeUserThread(Core::System& system, KThread* thread,
+                                         KThreadFunction func, uintptr_t arg, VAddr user_stack_top,
+                                         s32 prio, s32 virt_core, KProcess* owner) {
+    system.Kernel().GlobalSchedulerContext().AddThread(thread);
+    return InitializeThread(thread, func, arg, user_stack_top, prio, virt_core, owner,
+                            ThreadType::User, Core::CpuManager::GetGuestThreadStartFunc(),
+                            system.GetCpuManager().GetStartFuncParamater());
+}
+
+void KThread::PostDestroy(uintptr_t arg) {
+    KProcess* owner = reinterpret_cast<KProcess*>(arg & ~1ULL);
+    const bool resource_limit_release_hint = (arg & 1);
+    const s64 hint_value = (resource_limit_release_hint ? 0 : 1);
+    if (owner != nullptr) {
+        owner->GetResourceLimit()->Release(LimitableResource::Threads, 1, hint_value);
+        owner->Close();
+    }
+}
+
 void KThread::Finalize() {
     // If the thread has an owner process, unregister it.
     if (parent != nullptr) {
@@ -246,8 +288,10 @@ void KThread::Finalize() {
     // Decrement the parent process's thread count.
     if (parent != nullptr) {
         parent->DecrementThreadCount();
-        parent->GetResourceLimit()->Release(LimitableResource::Threads, 1);
     }
+
+    // Perform inherited finalization.
+    KAutoObjectWithSlabHeapAndContainer<KThread, KSynchronizationObject>::Finalize();
 }
 
 bool KThread::IsSignaled() const {
@@ -294,6 +338,9 @@ void KThread::StartTermination() {
 
     // Register terminated dpc flag.
     RegisterDpc(DpcFlag::Terminated);
+
+    // Close the thread.
+    this->Close();
 }
 
 void KThread::Pin() {
@@ -932,7 +979,7 @@ void KThread::Exit() {
 
     // Release the thread resource hint from parent.
     if (parent != nullptr) {
-        // TODO(bunnei): Hint that the resource is about to be released.
+        parent->GetResourceLimit()->Release(Kernel::LimitableResource::Threads, 0, 1);
         resource_limit_release_hint = true;
     }
 
@@ -995,56 +1042,6 @@ std::shared_ptr<Common::Fiber>& KThread::GetHostContext() {
     return host_context;
 }
 
-ResultVal<std::shared_ptr<KThread>> KThread::CreateThread(Core::System& system,
-                                                          ThreadType type_flags, std::string name,
-                                                          VAddr entry_point, u32 priority, u64 arg,
-                                                          s32 processor_id, VAddr stack_top,
-                                                          Process* owner_process) {
-    auto& kernel = system.Kernel();
-
-    std::shared_ptr<KThread> thread = std::make_shared<KThread>(kernel);
-
-    if (const auto result =
-            thread->InitializeThread(thread.get(), entry_point, arg, stack_top, priority,
-                                     processor_id, owner_process, type_flags);
-        result.IsError()) {
-        return result;
-    }
-
-    thread->name = name;
-
-    auto& scheduler = kernel.GlobalSchedulerContext();
-    scheduler.AddThread(thread);
-
-    return MakeResult<std::shared_ptr<KThread>>(std::move(thread));
-}
-
-ResultVal<std::shared_ptr<KThread>> KThread::CreateThread(
-    Core::System& system, ThreadType type_flags, std::string name, VAddr entry_point, u32 priority,
-    u64 arg, s32 processor_id, VAddr stack_top, Process* owner_process,
-    std::function<void(void*)>&& thread_start_func, void* thread_start_parameter) {
-    auto thread_result = CreateThread(system, type_flags, name, entry_point, priority, arg,
-                                      processor_id, stack_top, owner_process);
-
-    if (thread_result.Succeeded()) {
-        (*thread_result)->host_context =
-            std::make_shared<Common::Fiber>(std::move(thread_start_func), thread_start_parameter);
-    }
-
-    return thread_result;
-}
-
-ResultVal<std::shared_ptr<KThread>> KThread::CreateUserThread(
-    Core::System& system, ThreadType type_flags, std::string name, VAddr entry_point, u32 priority,
-    u64 arg, s32 processor_id, VAddr stack_top, Process* owner_process) {
-    std::function<void(void*)> init_func = Core::CpuManager::GetGuestThreadStartFunc();
-
-    void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
-
-    return CreateThread(system, type_flags, name, entry_point, priority, arg, processor_id,
-                        stack_top, owner_process, std::move(init_func), init_func_parameter);
-}
-
 KThread* GetCurrentThreadPointer(KernelCore& kernel) {
     return kernel.GetCurrentEmuThread();
 }

src/core/hle/kernel/k_thread.h

@@ -19,7 +19,7 @@
 #include "core/hle/kernel/k_light_lock.h"
 #include "core/hle/kernel/k_spin_lock.h"
 #include "core/hle/kernel/k_synchronization_object.h"
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/slab_helpers.h"
 #include "core/hle/kernel/svc_common.h"
 #include "core/hle/kernel/svc_types.h"
 #include "core/hle/result.h"
@@ -37,7 +37,7 @@ namespace Kernel {
 
 class GlobalSchedulerContext;
 class KernelCore;
-class Process;
+class KProcess;
 class KScheduler;
 class KThreadQueue;
 
@@ -99,9 +99,13 @@ enum class ThreadWaitReasonForDebugging : u32 {
 [[nodiscard]] KThread& GetCurrentThread(KernelCore& kernel);
 [[nodiscard]] s32 GetCurrentCoreId(KernelCore& kernel);
 
-class KThread final : public KSynchronizationObject, public boost::intrusive::list_base_hook<> {
+class KThread final : public KAutoObjectWithSlabHeapAndContainer<KThread, KSynchronizationObject>,
+                      public boost::intrusive::list_base_hook<> {
+    KERNEL_AUTOOBJECT_TRAITS(KThread, KSynchronizationObject);
+
+private:
     friend class KScheduler;
-    friend class Process;
+    friend class KProcess;
 
 public:
     static constexpr s32 DefaultThreadPriority = 44;
@@ -115,74 +119,10 @@ public:
     using ThreadContext64 = Core::ARM_Interface::ThreadContext64;
     using WaiterList = boost::intrusive::list<KThread>;
 
-    /**
-     * Creates and returns a new thread.
-     * @param system The instance of the whole system
-     * @param name The friendly name desired for the thread
-     * @param entry_point The address at which the thread should start execution
-     * @param priority The thread's priority
-     * @param arg User data to pass to the thread
-     * @param processor_id The ID(s) of the processors on which the thread is desired to be run
-     * @param stack_top The address of the thread's stack top
-     * @param owner_process The parent process for the thread, if null, it's a kernel thread
-     * @return A shared pointer to the newly created thread
-     */
-    [[nodiscard]] static ResultVal<std::shared_ptr<KThread>> CreateThread(
-        Core::System& system, ThreadType type_flags, std::string name, VAddr entry_point,
-        u32 priority, u64 arg, s32 processor_id, VAddr stack_top, Process* owner_process);
-
-    /**
-     * Creates and returns a new thread, with a specified entry point.
-     * @param system The instance of the whole system
-     * @param name The friendly name desired for the thread
-     * @param entry_point The address at which the thread should start execution
-     * @param priority The thread's priority
-     * @param arg User data to pass to the thread
-     * @param processor_id The ID(s) of the processors on which the thread is desired to be run
-     * @param stack_top The address of the thread's stack top
-     * @param owner_process The parent process for the thread, if null, it's a kernel thread
-     * @param thread_start_func The function where the host context will start.
-     * @param thread_start_parameter The parameter which will passed to host context on init
-     * @return A shared pointer to the newly created thread
-     */
-    [[nodiscard]] static ResultVal<std::shared_ptr<KThread>> CreateThread(
-        Core::System& system, ThreadType type_flags, std::string name, VAddr entry_point,
-        u32 priority, u64 arg, s32 processor_id, VAddr stack_top, Process* owner_process,
-        std::function<void(void*)>&& thread_start_func, void* thread_start_parameter);
-
-    /**
-     * Creates and returns a new thread for the emulated "user" process.
-     * @param system The instance of the whole system
-     * @param name The friendly name desired for the thread
-     * @param entry_point The address at which the thread should start execution
-     * @param priority The thread's priority
-     * @param arg User data to pass to the thread
-     * @param processor_id The ID(s) of the processors on which the thread is desired to be run
-     * @param stack_top The address of the thread's stack top
-     * @param owner_process The parent process for the thread, if null, it's a kernel thread
-     * @return A shared pointer to the newly created thread
-     */
-    [[nodiscard]] static ResultVal<std::shared_ptr<KThread>> CreateUserThread(
-        Core::System& system, ThreadType type_flags, std::string name, VAddr entry_point,
-        u32 priority, u64 arg, s32 processor_id, VAddr stack_top, Process* owner_process);
-
-    [[nodiscard]] std::string GetName() const override {
-        return name;
-    }
-
     void SetName(std::string new_name) {
         name = std::move(new_name);
     }
 
-    [[nodiscard]] std::string GetTypeName() const override {
-        return "Thread";
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::Thread;
-    [[nodiscard]] HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
     /**
      * Gets the thread's current priority
      * @return The current thread's priority
@@ -257,10 +197,6 @@ public:
 
     void Suspend();
 
-    void Finalize() override;
-
-    bool IsSignaled() const override;
-
     void SetSyncedObject(KSynchronizationObject* obj, ResultCode wait_res) {
         synced_object = obj;
         wait_result = wait_res;
@@ -354,11 +290,11 @@ public:
         current_core_id = core;
     }
 
-    [[nodiscard]] Process* GetOwnerProcess() {
+    [[nodiscard]] KProcess* GetOwnerProcess() {
         return parent;
     }
 
-    [[nodiscard]] const Process* GetOwnerProcess() const {
+    [[nodiscard]] const KProcess* GetOwnerProcess() const {
         return parent;
     }
 
@@ -422,6 +358,40 @@ public:
         return termination_requested || GetRawState() == ThreadState::Terminated;
     }
 
+    [[nodiscard]] virtual u64 GetId() const override final {
+        return this->GetThreadID();
+    }
+
+    [[nodiscard]] virtual bool IsInitialized() const override {
+        return initialized;
+    }
+
+    [[nodiscard]] virtual uintptr_t GetPostDestroyArgument() const override {
+        return reinterpret_cast<uintptr_t>(parent) | (resource_limit_release_hint ? 1 : 0);
+    }
+
+    virtual void Finalize() override;
+
+    [[nodiscard]] virtual bool IsSignaled() const override;
+
+    static void PostDestroy(uintptr_t arg);
+
+    [[nodiscard]] static ResultCode InitializeDummyThread(KThread* thread);
+
+    [[nodiscard]] static ResultCode InitializeIdleThread(Core::System& system, KThread* thread,
+                                                         s32 virt_core);
+
+    [[nodiscard]] static ResultCode InitializeHighPriorityThread(Core::System& system,
+                                                                 KThread* thread,
+                                                                 KThreadFunction func,
+                                                                 uintptr_t arg, s32 virt_core);
+
+    [[nodiscard]] static ResultCode InitializeUserThread(Core::System& system, KThread* thread,
+                                                         KThreadFunction func, uintptr_t arg,
+                                                         VAddr user_stack_top, s32 prio,
+                                                         s32 virt_core, KProcess* owner);
+
+public:
     struct StackParameters {
         u8 svc_permission[0x10];
         std::atomic<u8> dpc_flags;
@@ -671,11 +641,13 @@ private:
     void StartTermination();
 
     [[nodiscard]] ResultCode Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack_top,
-                                        s32 prio, s32 virt_core, Process* owner, ThreadType type);
+                                        s32 prio, s32 virt_core, KProcess* owner, ThreadType type);
 
     [[nodiscard]] static ResultCode InitializeThread(KThread* thread, KThreadFunction func,
                                                      uintptr_t arg, VAddr user_stack_top, s32 prio,
-                                                     s32 core, Process* owner, ThreadType type);
+                                                     s32 core, KProcess* owner, ThreadType type,
+                                                     std::function<void(void*)>&& init_func,
+                                                     void* init_func_parameter);
 
     static void RestorePriority(KernelCore& kernel, KThread* thread);
 
@@ -697,7 +669,7 @@ private:
     std::atomic<s64> cpu_time{};
     KSynchronizationObject* synced_object{};
     VAddr address_key{};
-    Process* parent{};
+    KProcess* parent{};
     VAddr kernel_stack_top{};
     u32* light_ipc_data{};
     VAddr tls_address{};
@@ -742,7 +714,6 @@ private:
     VAddr mutex_wait_address_for_debugging{};
     ThreadWaitReasonForDebugging wait_reason_for_debugging{};
     ThreadType thread_type_for_debugging{};
-    std::string name;
 
 public:
     using ConditionVariableThreadTreeType = ConditionVariableThreadTree;

src/core/hle/kernel/k_transfer_memory.cpp

@@ -0,0 +1,45 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/k_resource_limit.h"
+#include "core/hle/kernel/k_transfer_memory.h"
+#include "core/hle/kernel/kernel.h"
+
+namespace Kernel {
+
+KTransferMemory::KTransferMemory(KernelCore& kernel)
+    : KAutoObjectWithSlabHeapAndContainer{kernel} {}
+
+KTransferMemory::~KTransferMemory() = default;
+
+ResultCode KTransferMemory::Initialize(VAddr address_, std::size_t size_,
+                                       Svc::MemoryPermission owner_perm_) {
+    // Set members.
+    owner = kernel.CurrentProcess();
+
+    // TODO(bunnei): Lock for transfer memory
+
+    // Set remaining tracking members.
+    owner->Open();
+    owner_perm = owner_perm_;
+    address = address_;
+    size = size_;
+    is_initialized = true;
+
+    return RESULT_SUCCESS;
+}
+
+void KTransferMemory::Finalize() {
+    // Perform inherited finalization.
+    KAutoObjectWithSlabHeapAndContainer<KTransferMemory, KAutoObjectWithList>::Finalize();
+}
+
+void KTransferMemory::PostDestroy(uintptr_t arg) {
+    KProcess* owner = reinterpret_cast<KProcess*>(arg);
+    owner->GetResourceLimit()->Release(LimitableResource::TransferMemory, 1);
+    owner->Close();
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_transfer_memory.h

@@ -0,0 +1,66 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/kernel/svc_types.h"
+#include "core/hle/result.h"
+
+union ResultCode;
+
+namespace Core::Memory {
+class Memory;
+}
+
+namespace Kernel {
+
+class KernelCore;
+class KProcess;
+
+class KTransferMemory final
+    : public KAutoObjectWithSlabHeapAndContainer<KTransferMemory, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KTransferMemory, KAutoObject);
+
+public:
+    explicit KTransferMemory(KernelCore& kernel);
+    virtual ~KTransferMemory() override;
+
+    ResultCode Initialize(VAddr address_, std::size_t size_, Svc::MemoryPermission owner_perm_);
+
+    virtual void Finalize() override;
+
+    virtual bool IsInitialized() const override {
+        return is_initialized;
+    }
+
+    virtual uintptr_t GetPostDestroyArgument() const override {
+        return reinterpret_cast<uintptr_t>(owner);
+    }
+
+    static void PostDestroy(uintptr_t arg);
+
+    KProcess* GetOwner() const {
+        return owner;
+    }
+
+    VAddr GetSourceAddress() const {
+        return address;
+    }
+
+    size_t GetSize() const {
+        return is_initialized ? size * PageSize : 0;
+    }
+
+private:
+    KProcess* owner{};
+    VAddr address{};
+    Svc::MemoryPermission owner_perm{};
+    size_t size{};
+    bool is_initialized{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_writable_event.cpp

@@ -8,20 +8,28 @@
 
 namespace Kernel {
 
-KWritableEvent::KWritableEvent(KernelCore& kernel, std::string&& name)
-    : Object{kernel, std::move(name)} {}
+KWritableEvent::KWritableEvent(KernelCore& kernel) : KAutoObjectWithSlabHeapAndContainer{kernel} {}
+
 KWritableEvent::~KWritableEvent() = default;
 
-void KWritableEvent::Initialize(KEvent* parent_) {
+void KWritableEvent::Initialize(KEvent* parent_, std::string&& name_) {
     parent = parent_;
+    name = std::move(name_);
+    parent->GetReadableEvent().Open();
 }
 
 ResultCode KWritableEvent::Signal() {
-    return parent->GetReadableEvent()->Signal();
+    return parent->GetReadableEvent().Signal();
 }
 
 ResultCode KWritableEvent::Clear() {
-    return parent->GetReadableEvent()->Clear();
+    return parent->GetReadableEvent().Clear();
+}
+
+void KWritableEvent::Destroy() {
+    // Close our references.
+    parent->GetReadableEvent().Close();
+    parent->Close();
 }
 
 } // namespace Kernel

src/core/hle/kernel/k_writable_event.h

@@ -4,7 +4,8 @@
 
 #pragma once
 
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/slab_helpers.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
@@ -12,24 +13,19 @@ namespace Kernel {
 class KernelCore;
 class KEvent;
 
-class KWritableEvent final : public Object {
+class KWritableEvent final
+    : public KAutoObjectWithSlabHeapAndContainer<KWritableEvent, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KWritableEvent, KAutoObject);
+
 public:
-    explicit KWritableEvent(KernelCore& kernel, std::string&& name);
+    explicit KWritableEvent(KernelCore& kernel);
     ~KWritableEvent() override;
 
-    std::string GetTypeName() const override {
-        return "KWritableEvent";
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::WritableEvent;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    void Initialize(KEvent* parent_);
+    virtual void Destroy() override;
 
-    void Finalize() override {}
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
 
+    void Initialize(KEvent* parent_, std::string&& name_);
     ResultCode Signal();
     ResultCode Clear();
 

src/core/hle/kernel/kernel.cpp

@@ -26,10 +26,12 @@
 #include "core/cpu_manager.h"
 #include "core/device_memory.h"
 #include "core/hardware_properties.h"
-#include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/handle_table.h"
+#include "core/hle/kernel/init/init_slab_setup.h"
+#include "core/hle/kernel/k_client_port.h"
+#include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_memory_layout.h"
 #include "core/hle/kernel/k_memory_manager.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_shared_memory.h"
@@ -37,7 +39,6 @@
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/physical_core.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/service_thread.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/time_manager.h"
@@ -51,7 +52,7 @@ namespace Kernel {
 
 struct KernelCore::Impl {
     explicit Impl(Core::System& system, KernelCore& kernel)
-        : time_manager{system}, global_handle_table{kernel}, system{system} {}
+        : time_manager{system}, object_list_container{kernel}, system{system} {}
 
     void SetMulticore(bool is_multicore) {
         this->is_multicore = is_multicore;
@@ -59,8 +60,7 @@ struct KernelCore::Impl {
 
     void Initialize(KernelCore& kernel) {
         global_scheduler_context = std::make_unique<Kernel::GlobalSchedulerContext>(kernel);
-
-        RegisterHostThread();
+        global_handle_table = std::make_unique<Kernel::KHandleTable>(kernel);
 
         service_thread_manager =
             std::make_unique<Common::ThreadWorker>(1, "yuzu:ServiceThreadManager");
@@ -69,14 +69,20 @@ struct KernelCore::Impl {
         InitializePhysicalCores();
 
         // Derive the initial memory layout from the emulated board
+        Init::InitializeSlabResourceCounts(kernel);
         KMemoryLayout memory_layout;
         DeriveInitialMemoryLayout(memory_layout);
-        InitializeMemoryLayout(memory_layout);
+        Init::InitializeSlabHeaps(system, memory_layout);
+
+        // Initialize kernel memory and resources.
         InitializeSystemResourceLimit(kernel, system.CoreTiming(), memory_layout);
-        InitializeSlabHeaps();
+        InitializeMemoryLayout(memory_layout);
+        InitializePageSlab();
         InitializeSchedulers();
         InitializeSuspendThreads();
         InitializePreemption(kernel);
+
+        RegisterHostThread();
     }
 
     void InitializeCores() {
@@ -93,34 +99,49 @@ struct KernelCore::Impl {
         service_threads.clear();
 
         next_object_id = 0;
-        next_kernel_process_id = Process::InitialKIPIDMin;
-        next_user_process_id = Process::ProcessIDMin;
+        next_kernel_process_id = KProcess::InitialKIPIDMin;
+        next_user_process_id = KProcess::ProcessIDMin;
         next_thread_id = 1;
 
-        for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
-            if (suspend_threads[i]) {
-                suspend_threads[i].reset();
+        for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
+            if (suspend_threads[core_id]) {
+                suspend_threads[core_id]->Close();
+                suspend_threads[core_id] = nullptr;
             }
+
+            schedulers[core_id].reset();
         }
 
         cores.clear();
 
-        current_process = nullptr;
+        if (current_process) {
+            current_process->Close();
+            current_process = nullptr;
+        }
 
-        global_handle_table.Clear();
+        global_handle_table.reset();
 
         preemption_event = nullptr;
 
+        for (auto& iter : named_ports) {
+            iter.second->Close();
+        }
         named_ports.clear();
 
         exclusive_monitor.reset();
 
-        hid_shared_mem = nullptr;
-        font_shared_mem = nullptr;
-        irs_shared_mem = nullptr;
-        time_shared_mem = nullptr;
-
-        system_resource_limit = nullptr;
+        // Cleanup persistent kernel objects
+        auto CleanupObject = [](KAutoObject* obj) {
+            if (obj) {
+                obj->Close();
+                obj = nullptr;
+            }
+        };
+        CleanupObject(hid_shared_mem);
+        CleanupObject(font_shared_mem);
+        CleanupObject(irs_shared_mem);
+        CleanupObject(time_shared_mem);
+        CleanupObject(system_resource_limit);
 
         // Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others
         next_host_thread_id = Core::Hardware::NUM_CPU_CORES;
@@ -145,7 +166,9 @@ struct KernelCore::Impl {
     void InitializeSystemResourceLimit(KernelCore& kernel,
                                        const Core::Timing::CoreTiming& core_timing,
                                        const KMemoryLayout& memory_layout) {
-        system_resource_limit = std::make_shared<KResourceLimit>(kernel, core_timing);
+        system_resource_limit = KResourceLimit::Create(system.Kernel());
+        system_resource_limit->Initialize(&core_timing);
+
         const auto [total_size, kernel_size] = memory_layout.GetTotalAndKernelMemorySizes();
 
         // If setting the default system values fails, then something seriously wrong has occurred.
@@ -189,19 +212,16 @@ struct KernelCore::Impl {
     }
 
     void InitializeSuspendThreads() {
-        for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
-            std::string name = "Suspend Thread Id:" + std::to_string(i);
-            std::function<void(void*)> init_func = Core::CpuManager::GetSuspendThreadStartFunc();
-            void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
-            auto thread_res = KThread::CreateThread(
-                system, ThreadType::HighPriority, std::move(name), 0, 0, 0, static_cast<u32>(i), 0,
-                nullptr, std::move(init_func), init_func_parameter);
-
-            suspend_threads[i] = std::move(thread_res).Unwrap();
+        for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
+            suspend_threads[core_id] = KThread::Create(system.Kernel());
+            ASSERT(KThread::InitializeHighPriorityThread(system, suspend_threads[core_id], {}, {},
+                                                         core_id)
+                       .IsSuccess());
+            suspend_threads[core_id]->SetName(fmt::format("SuspendThread:{}", core_id));
         }
     }
 
-    void MakeCurrentProcess(Process* process) {
+    void MakeCurrentProcess(KProcess* process) {
         current_process = process;
         if (process == nullptr) {
             return;
@@ -232,11 +252,15 @@ struct KernelCore::Impl {
 
     // Gets the dummy KThread for the caller, allocating a new one if this is the first time
     KThread* GetHostDummyThread() {
-        const thread_local auto thread =
-            KThread::CreateThread(
-                system, ThreadType::Main, fmt::format("DummyThread:{}", GetHostThreadId()), 0,
-                KThread::DefaultThreadPriority, 0, static_cast<u32>(3), 0, nullptr)
-                .Unwrap();
+        auto make_thread = [this]() {
+            std::unique_ptr<KThread> thread = std::make_unique<KThread>(system.Kernel());
+            KAutoObject::Create(thread.get());
+            ASSERT(KThread::InitializeDummyThread(thread.get()).IsSuccess());
+            thread->SetName(fmt::format("DummyThread:{}", GetHostThreadId()));
+            return std::move(thread);
+        };
+
+        thread_local auto thread = make_thread();
         return thread.get();
     }
 
@@ -371,7 +395,8 @@ struct KernelCore::Impl {
         const size_t resource_region_size = memory_layout.GetResourceRegionSizeForInit();
 
         // Determine the size of the slab region.
-        const size_t slab_region_size = Common::AlignUp(KernelSlabHeapSize, PageSize);
+        const size_t slab_region_size =
+            Common::AlignUp(Init::CalculateTotalSlabHeapSize(system.Kernel()), PageSize);
         ASSERT(slab_region_size <= resource_region_size);
 
         // Setup the slab region.
@@ -569,25 +594,30 @@ struct KernelCore::Impl {
         const PAddr irs_phys_addr{system_pool.GetAddress() + hid_size + font_size};
         const PAddr time_phys_addr{system_pool.GetAddress() + hid_size + font_size + irs_size};
 
-        hid_shared_mem = Kernel::KSharedMemory::Create(
-            system.Kernel(), system.DeviceMemory(), nullptr, {hid_phys_addr, hid_size / PageSize},
-            KMemoryPermission::None, KMemoryPermission::Read, hid_phys_addr, hid_size,
-            "HID:SharedMemory");
-        font_shared_mem = Kernel::KSharedMemory::Create(
-            system.Kernel(), system.DeviceMemory(), nullptr, {font_phys_addr, font_size / PageSize},
-            KMemoryPermission::None, KMemoryPermission::Read, font_phys_addr, font_size,
-            "Font:SharedMemory");
-        irs_shared_mem = Kernel::KSharedMemory::Create(
-            system.Kernel(), system.DeviceMemory(), nullptr, {irs_phys_addr, irs_size / PageSize},
-            KMemoryPermission::None, KMemoryPermission::Read, irs_phys_addr, irs_size,
-            "IRS:SharedMemory");
-        time_shared_mem = Kernel::KSharedMemory::Create(
-            system.Kernel(), system.DeviceMemory(), nullptr, {time_phys_addr, time_size / PageSize},
-            KMemoryPermission::None, KMemoryPermission::Read, time_phys_addr, time_size,
-            "Time:SharedMemory");
+        hid_shared_mem = KSharedMemory::Create(system.Kernel());
+        font_shared_mem = KSharedMemory::Create(system.Kernel());
+        irs_shared_mem = KSharedMemory::Create(system.Kernel());
+        time_shared_mem = KSharedMemory::Create(system.Kernel());
+
+        hid_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
+                                   {hid_phys_addr, hid_size / PageSize},
+                                   Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
+                                   hid_phys_addr, hid_size, "HID:SharedMemory");
+        font_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
+                                    {font_phys_addr, font_size / PageSize},
+                                    Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
+                                    font_phys_addr, font_size, "Font:SharedMemory");
+        irs_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
+                                   {irs_phys_addr, irs_size / PageSize},
+                                   Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
+                                   irs_phys_addr, irs_size, "IRS:SharedMemory");
+        time_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
+                                    {time_phys_addr, time_size / PageSize},
+                                    Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
+                                    time_phys_addr, time_size, "Time:SharedMemory");
     }
 
-    void InitializeSlabHeaps() {
+    void InitializePageSlab() {
         // Allocate slab heaps
         user_slab_heap_pages = std::make_unique<KSlabHeap<Page>>();
 
@@ -596,30 +626,33 @@ struct KernelCore::Impl {
         // Reserve slab heaps
         ASSERT(
             system_resource_limit->Reserve(LimitableResource::PhysicalMemory, user_slab_heap_size));
-        // Initialize slab heaps
+        // Initialize slab heap
         user_slab_heap_pages->Initialize(
             system.DeviceMemory().GetPointer(Core::DramMemoryMap::SlabHeapBase),
             user_slab_heap_size);
     }
 
     std::atomic<u32> next_object_id{0};
-    std::atomic<u64> next_kernel_process_id{Process::InitialKIPIDMin};
-    std::atomic<u64> next_user_process_id{Process::ProcessIDMin};
+    std::atomic<u64> next_kernel_process_id{KProcess::InitialKIPIDMin};
+    std::atomic<u64> next_user_process_id{KProcess::ProcessIDMin};
     std::atomic<u64> next_thread_id{1};
 
     // Lists all processes that exist in the current session.
-    std::vector<std::shared_ptr<Process>> process_list;
-    Process* current_process = nullptr;
+    std::vector<KProcess*> process_list;
+    KProcess* current_process{};
     std::unique_ptr<Kernel::GlobalSchedulerContext> global_scheduler_context;
     Kernel::TimeManager time_manager;
 
-    std::shared_ptr<KResourceLimit> system_resource_limit;
+    Init::KSlabResourceCounts slab_resource_counts{};
+    KResourceLimit* system_resource_limit{};
 
     std::shared_ptr<Core::Timing::EventType> preemption_event;
 
     // This is the kernel's handle table or supervisor handle table which
     // stores all the objects in place.
-    HandleTable global_handle_table;
+    std::unique_ptr<KHandleTable> global_handle_table;
+
+    KAutoObjectWithListContainer object_list_container;
 
     /// Map of named ports managed by the kernel, which can be retrieved using
     /// the ConnectToPort SVC.
@@ -636,10 +669,10 @@ struct KernelCore::Impl {
     std::unique_ptr<KSlabHeap<Page>> user_slab_heap_pages;
 
     // Shared memory for services
-    std::shared_ptr<Kernel::KSharedMemory> hid_shared_mem;
-    std::shared_ptr<Kernel::KSharedMemory> font_shared_mem;
-    std::shared_ptr<Kernel::KSharedMemory> irs_shared_mem;
-    std::shared_ptr<Kernel::KSharedMemory> time_shared_mem;
+    Kernel::KSharedMemory* hid_shared_mem{};
+    Kernel::KSharedMemory* font_shared_mem{};
+    Kernel::KSharedMemory* irs_shared_mem{};
+    Kernel::KSharedMemory* time_shared_mem{};
 
     // Threads used for services
     std::unordered_set<std::shared_ptr<Kernel::ServiceThread>> service_threads;
@@ -648,7 +681,7 @@ struct KernelCore::Impl {
     // the release of itself
     std::unique_ptr<Common::ThreadWorker> service_thread_manager;
 
-    std::array<std::shared_ptr<KThread>, Core::Hardware::NUM_CPU_CORES> suspend_threads{};
+    std::array<KThread*, Core::Hardware::NUM_CPU_CORES> suspend_threads;
     std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
     std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
 
@@ -663,15 +696,14 @@ struct KernelCore::Impl {
 };
 
 KernelCore::KernelCore(Core::System& system) : impl{std::make_unique<Impl>(system, *this)} {}
-KernelCore::~KernelCore() {
-    Shutdown();
-}
+KernelCore::~KernelCore() = default;
 
 void KernelCore::SetMulticore(bool is_multicore) {
     impl->SetMulticore(is_multicore);
 }
 
 void KernelCore::Initialize() {
+    slab_heap_container = std::make_unique<SlabHeapContainer>();
     impl->Initialize(*this);
 }
 
@@ -683,31 +715,35 @@ void KernelCore::Shutdown() {
     impl->Shutdown();
 }
 
-std::shared_ptr<KResourceLimit> KernelCore::GetSystemResourceLimit() const {
+const KResourceLimit* KernelCore::GetSystemResourceLimit() const {
     return impl->system_resource_limit;
 }
 
-std::shared_ptr<KThread> KernelCore::RetrieveThreadFromGlobalHandleTable(Handle handle) const {
-    return impl->global_handle_table.Get<KThread>(handle);
+KResourceLimit* KernelCore::GetSystemResourceLimit() {
+    return impl->system_resource_limit;
+}
+
+KScopedAutoObject<KThread> KernelCore::RetrieveThreadFromGlobalHandleTable(Handle handle) const {
+    return impl->global_handle_table->GetObject<KThread>(handle);
 }
 
-void KernelCore::AppendNewProcess(std::shared_ptr<Process> process) {
-    impl->process_list.push_back(std::move(process));
+void KernelCore::AppendNewProcess(KProcess* process) {
+    impl->process_list.push_back(process);
 }
 
-void KernelCore::MakeCurrentProcess(Process* process) {
+void KernelCore::MakeCurrentProcess(KProcess* process) {
     impl->MakeCurrentProcess(process);
 }
 
-Process* KernelCore::CurrentProcess() {
+KProcess* KernelCore::CurrentProcess() {
     return impl->current_process;
 }
 
-const Process* KernelCore::CurrentProcess() const {
+const KProcess* KernelCore::CurrentProcess() const {
     return impl->current_process;
 }
 
-const std::vector<std::shared_ptr<Process>>& KernelCore::GetProcessList() const {
+const std::vector<KProcess*>& KernelCore::GetProcessList() const {
     return impl->process_list;
 }
 
@@ -781,6 +817,14 @@ const Core::ExclusiveMonitor& KernelCore::GetExclusiveMonitor() const {
     return *impl->exclusive_monitor;
 }
 
+KAutoObjectWithListContainer& KernelCore::ObjectListContainer() {
+    return impl->object_list_container;
+}
+
+const KAutoObjectWithListContainer& KernelCore::ObjectListContainer() const {
+    return impl->object_list_container;
+}
+
 void KernelCore::InvalidateAllInstructionCaches() {
     for (auto& physical_core : impl->cores) {
         physical_core.ArmInterface().ClearInstructionCache();
@@ -800,8 +844,9 @@ void KernelCore::PrepareReschedule(std::size_t id) {
     // TODO: Reimplement, this
 }
 
-void KernelCore::AddNamedPort(std::string name, std::shared_ptr<ClientPort> port) {
-    impl->named_ports.emplace(std::move(name), std::move(port));
+void KernelCore::AddNamedPort(std::string name, KClientPort* port) {
+    port->Open();
+    impl->named_ports.emplace(std::move(name), port);
 }
 
 KernelCore::NamedPortTable::iterator KernelCore::FindNamedPort(const std::string& name) {
@@ -833,12 +878,12 @@ u64 KernelCore::CreateNewUserProcessID() {
     return impl->next_user_process_id++;
 }
 
-Kernel::HandleTable& KernelCore::GlobalHandleTable() {
-    return impl->global_handle_table;
+KHandleTable& KernelCore::GlobalHandleTable() {
+    return *impl->global_handle_table;
 }
 
-const Kernel::HandleTable& KernelCore::GlobalHandleTable() const {
-    return impl->global_handle_table;
+const KHandleTable& KernelCore::GlobalHandleTable() const {
+    return *impl->global_handle_table;
 }
 
 void KernelCore::RegisterCoreThread(std::size_t core_id) {
@@ -910,9 +955,9 @@ void KernelCore::Suspend(bool in_suspention) {
     {
         KScopedSchedulerLock lock(*this);
         const auto state = should_suspend ? ThreadState::Runnable : ThreadState::Waiting;
-        for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
-            impl->suspend_threads[i]->SetState(state);
-            impl->suspend_threads[i]->SetWaitReasonForDebugging(
+        for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
+            impl->suspend_threads[core_id]->SetState(state);
+            impl->suspend_threads[core_id]->SetWaitReasonForDebugging(
                 ThreadWaitReasonForDebugging::Suspended);
         }
     }
@@ -952,6 +997,14 @@ void KernelCore::ReleaseServiceThread(std::weak_ptr<Kernel::ServiceThread> servi
     });
 }
 
+Init::KSlabResourceCounts& KernelCore::SlabResourceCounts() {
+    return impl->slab_resource_counts;
+}
+
+const Init::KSlabResourceCounts& KernelCore::SlabResourceCounts() const {
+    return impl->slab_resource_counts;
+}
+
 bool KernelCore::IsPhantomModeForSingleCore() const {
     return impl->IsPhantomModeForSingleCore();
 }
@@ -960,4 +1013,12 @@ void KernelCore::SetIsPhantomModeForSingleCore(bool value) {
     impl->SetIsPhantomModeForSingleCore(value);
 }
 
+Core::System& KernelCore::System() {
+    return impl->system;
+}
+
+const Core::System& KernelCore::System() const {
+    return impl->system;
+}
+
 } // namespace Kernel

src/core/hle/kernel/kernel.h

@@ -11,8 +11,10 @@
 #include <vector>
 #include "core/arm/cpu_interrupt_handler.h"
 #include "core/hardware_properties.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_slab_heap.h"
 #include "core/hle/kernel/memory_types.h"
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/svc_common.h"
 
 namespace Core {
 class CPUInterruptHandler;
@@ -27,20 +29,32 @@ struct EventType;
 
 namespace Kernel {
 
-class ClientPort;
+class KClientPort;
 class GlobalSchedulerContext;
-class HandleTable;
+class KAutoObjectWithListContainer;
+class KClientSession;
+class KEvent;
+class KHandleTable;
+class KLinkedListNode;
 class KMemoryManager;
+class KPort;
+class KProcess;
 class KResourceLimit;
 class KScheduler;
+class KSession;
 class KSharedMemory;
 class KThread;
+class KTransferMemory;
+class KWritableEvent;
 class PhysicalCore;
-class Process;
 class ServiceThread;
 class Synchronization;
 class TimeManager;
 
+namespace Init {
+struct KSlabResourceCounts;
+}
+
 template <typename T>
 class KSlabHeap;
 
@@ -51,7 +65,7 @@ constexpr EmuThreadHandle EmuThreadHandleReserved{1ULL << 63};
 /// Represents a single instance of the kernel.
 class KernelCore {
 private:
-    using NamedPortTable = std::unordered_map<std::string, std::shared_ptr<ClientPort>>;
+    using NamedPortTable = std::unordered_map<std::string, KClientPort*>;
 
 public:
     /// Constructs an instance of the kernel using the given System
@@ -83,25 +97,28 @@ public:
     void Shutdown();
 
     /// Retrieves a shared pointer to the system resource limit instance.
-    std::shared_ptr<KResourceLimit> GetSystemResourceLimit() const;
+    const KResourceLimit* GetSystemResourceLimit() const;
+
+    /// Retrieves a shared pointer to the system resource limit instance.
+    KResourceLimit* GetSystemResourceLimit();
 
     /// Retrieves a shared pointer to a Thread instance within the thread wakeup handle table.
-    std::shared_ptr<KThread> RetrieveThreadFromGlobalHandleTable(Handle handle) const;
+    KScopedAutoObject<KThread> RetrieveThreadFromGlobalHandleTable(Handle handle) const;
 
     /// Adds the given shared pointer to an internal list of active processes.
-    void AppendNewProcess(std::shared_ptr<Process> process);
+    void AppendNewProcess(KProcess* process);
 
     /// Makes the given process the new current process.
-    void MakeCurrentProcess(Process* process);
+    void MakeCurrentProcess(KProcess* process);
 
     /// Retrieves a pointer to the current process.
-    Process* CurrentProcess();
+    KProcess* CurrentProcess();
 
     /// Retrieves a const pointer to the current process.
-    const Process* CurrentProcess() const;
+    const KProcess* CurrentProcess() const;
 
     /// Retrieves the list of processes.
-    const std::vector<std::shared_ptr<Process>>& GetProcessList() const;
+    const std::vector<KProcess*>& GetProcessList() const;
 
     /// Gets the sole instance of the global scheduler
     Kernel::GlobalSchedulerContext& GlobalSchedulerContext();
@@ -143,6 +160,10 @@ public:
 
     const Core::ExclusiveMonitor& GetExclusiveMonitor() const;
 
+    KAutoObjectWithListContainer& ObjectListContainer();
+
+    const KAutoObjectWithListContainer& ObjectListContainer() const;
+
     std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& Interrupts();
 
     const std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& Interrupts() const;
@@ -152,7 +173,7 @@ public:
     void InvalidateCpuInstructionCacheRange(VAddr addr, std::size_t size);
 
     /// Adds a port to the named port table
-    void AddNamedPort(std::string name, std::shared_ptr<ClientPort> port);
+    void AddNamedPort(std::string name, KClientPort* port);
 
     /// Finds a port within the named port table with the given name.
     NamedPortTable::iterator FindNamedPort(const std::string& name);
@@ -225,9 +246,10 @@ public:
 
     /**
      * Creates an HLE service thread, which are used to execute service routines asynchronously.
-     * While these are allocated per ServerSession, these need to be owned and managed outside of
-     * ServerSession to avoid a circular dependency.
-     * @param name String name for the ServerSession creating this thread, used for debug purposes.
+     * While these are allocated per ServerSession, these need to be owned and managed outside
+     * of ServerSession to avoid a circular dependency.
+     * @param name String name for the ServerSession creating this thread, used for debug
+     * purposes.
      * @returns The a weak pointer newly created service thread.
      */
     std::weak_ptr<Kernel::ServiceThread> CreateServiceThread(const std::string& name);
@@ -243,9 +265,45 @@ public:
     bool IsPhantomModeForSingleCore() const;
     void SetIsPhantomModeForSingleCore(bool value);
 
+    Core::System& System();
+    const Core::System& System() const;
+
+    /// Gets the slab heap for the specified kernel object type.
+    template <typename T>
+    KSlabHeap<T>& SlabHeap() {
+        if constexpr (std::is_same_v<T, KClientSession>) {
+            return slab_heap_container->client_session;
+        } else if constexpr (std::is_same_v<T, KEvent>) {
+            return slab_heap_container->event;
+        } else if constexpr (std::is_same_v<T, KLinkedListNode>) {
+            return slab_heap_container->linked_list_node;
+        } else if constexpr (std::is_same_v<T, KPort>) {
+            return slab_heap_container->port;
+        } else if constexpr (std::is_same_v<T, KProcess>) {
+            return slab_heap_container->process;
+        } else if constexpr (std::is_same_v<T, KResourceLimit>) {
+            return slab_heap_container->resource_limit;
+        } else if constexpr (std::is_same_v<T, KSession>) {
+            return slab_heap_container->session;
+        } else if constexpr (std::is_same_v<T, KSharedMemory>) {
+            return slab_heap_container->shared_memory;
+        } else if constexpr (std::is_same_v<T, KThread>) {
+            return slab_heap_container->thread;
+        } else if constexpr (std::is_same_v<T, KTransferMemory>) {
+            return slab_heap_container->transfer_memory;
+        } else if constexpr (std::is_same_v<T, KWritableEvent>) {
+            return slab_heap_container->writeable_event;
+        }
+    }
+
+    /// Gets the current slab resource counts.
+    Init::KSlabResourceCounts& SlabResourceCounts();
+
+    /// Gets the current slab resource counts.
+    const Init::KSlabResourceCounts& SlabResourceCounts() const;
+
 private:
-    friend class Object;
-    friend class Process;
+    friend class KProcess;
     friend class KThread;
 
     /// Creates a new object ID, incrementing the internal object ID counter.
@@ -261,14 +319,33 @@ private:
     u64 CreateNewThreadID();
 
     /// Provides a reference to the global handle table.
-    Kernel::HandleTable& GlobalHandleTable();
+    KHandleTable& GlobalHandleTable();
 
     /// Provides a const reference to the global handle table.
-    const Kernel::HandleTable& GlobalHandleTable() const;
+    const KHandleTable& GlobalHandleTable() const;
 
     struct Impl;
     std::unique_ptr<Impl> impl;
+
     bool exception_exited{};
+
+private:
+    /// Helper to encapsulate all slab heaps in a single heap allocated container
+    struct SlabHeapContainer {
+        KSlabHeap<KClientSession> client_session;
+        KSlabHeap<KEvent> event;
+        KSlabHeap<KLinkedListNode> linked_list_node;
+        KSlabHeap<KPort> port;
+        KSlabHeap<KProcess> process;
+        KSlabHeap<KResourceLimit> resource_limit;
+        KSlabHeap<KSession> session;
+        KSlabHeap<KSharedMemory> shared_memory;
+        KSlabHeap<KThread> thread;
+        KSlabHeap<KTransferMemory> transfer_memory;
+        KSlabHeap<KWritableEvent> writeable_event;
+    };
+
+    std::unique_ptr<SlabHeapContainer> slab_heap_container;
 };
 
 } // namespace Kernel

src/core/hle/kernel/object.cpp

@@ -1,42 +0,0 @@
-// Copyright 2018 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "common/assert.h"
-#include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/object.h"
-
-namespace Kernel {
-
-Object::Object(KernelCore& kernel_)
-    : kernel{kernel_}, object_id{kernel_.CreateNewObjectID()}, name{"[UNKNOWN KERNEL OBJECT]"} {}
-Object::Object(KernelCore& kernel_, std::string&& name_)
-    : kernel{kernel_}, object_id{kernel_.CreateNewObjectID()}, name{std::move(name_)} {}
-Object::~Object() = default;
-
-bool Object::IsWaitable() const {
-    switch (GetHandleType()) {
-    case HandleType::ReadableEvent:
-    case HandleType::Thread:
-    case HandleType::Process:
-    case HandleType::ServerPort:
-    case HandleType::ServerSession:
-        return true;
-
-    case HandleType::Unknown:
-    case HandleType::Event:
-    case HandleType::WritableEvent:
-    case HandleType::SharedMemory:
-    case HandleType::TransferMemory:
-    case HandleType::ResourceLimit:
-    case HandleType::ClientPort:
-    case HandleType::ClientSession:
-    case HandleType::Session:
-        return false;
-    }
-
-    UNREACHABLE();
-    return false;
-}
-
-} // namespace Kernel

src/core/hle/kernel/object.h

@@ -1,96 +0,0 @@
-// Copyright 2018 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <atomic>
-#include <memory>
-#include <string>
-
-#include "common/common_types.h"
-
-namespace Kernel {
-
-class KernelCore;
-
-using Handle = u32;
-
-enum class HandleType : u32 {
-    Unknown,
-    Event,
-    WritableEvent,
-    ReadableEvent,
-    SharedMemory,
-    TransferMemory,
-    Thread,
-    Process,
-    ResourceLimit,
-    ClientPort,
-    ServerPort,
-    ClientSession,
-    ServerSession,
-    Session,
-};
-
-class Object : NonCopyable, public std::enable_shared_from_this<Object> {
-public:
-    explicit Object(KernelCore& kernel_);
-    explicit Object(KernelCore& kernel_, std::string&& name_);
-    virtual ~Object();
-
-    /// Returns a unique identifier for the object. For debugging purposes only.
-    u32 GetObjectId() const {
-        return object_id.load(std::memory_order_relaxed);
-    }
-
-    virtual std::string GetTypeName() const {
-        return "[BAD KERNEL OBJECT TYPE]";
-    }
-    virtual std::string GetName() const {
-        return name;
-    }
-    virtual HandleType GetHandleType() const = 0;
-
-    void Close() {
-        // TODO(bunnei): This is a placeholder to decrement the reference count, which we will use
-        // when we implement KAutoObject instead of using shared_ptr.
-    }
-
-    /**
-     * Check if a thread can wait on the object
-     * @return True if a thread can wait on the object, otherwise false
-     */
-    bool IsWaitable() const;
-
-    virtual void Finalize() = 0;
-
-protected:
-    /// The kernel instance this object was created under.
-    KernelCore& kernel;
-
-private:
-    std::atomic<u32> object_id{0};
-    std::string name;
-};
-
-template <typename T>
-std::shared_ptr<T> SharedFrom(T* raw) {
-    if (raw == nullptr)
-        return nullptr;
-    return std::static_pointer_cast<T>(raw->shared_from_this());
-}
-
-/**
- * Attempts to downcast the given Object pointer to a pointer to T.
- * @return Derived pointer to the object, or `nullptr` if `object` isn't of type T.
- */
-template <typename T>
-inline std::shared_ptr<T> DynamicObjectCast(std::shared_ptr<Object> object) {
-    if (object != nullptr && object->GetHandleType() == T::HANDLE_TYPE) {
-        return std::static_pointer_cast<T>(object);
-    }
-    return nullptr;
-}
-
-} // namespace Kernel

src/core/hle/kernel/process_capability.cpp

@@ -6,7 +6,7 @@
 
 #include "common/bit_util.h"
 #include "common/logging/log.h"
-#include "core/hle/kernel/handle_table.h"
+#include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_page_table.h"
 #include "core/hle/kernel/process_capability.h"
 #include "core/hle/kernel/svc_results.h"
@@ -99,7 +99,7 @@ void ProcessCapabilities::InitializeForMetadatalessProcess() {
     interrupt_capabilities.set();
 
     // Allow using the maximum possible amount of handles
-    handle_table_size = static_cast<s32>(HandleTable::MAX_COUNT);
+    handle_table_size = static_cast<s32>(KHandleTable::MaxTableSize);
 
     // Allow all debugging capabilities.
     is_debuggable = true;
@@ -159,7 +159,7 @@ ResultCode ProcessCapabilities::ParseSingleFlagCapability(u32& set_flags, u32& s
     const auto type = GetCapabilityType(flag);
 
     if (type == CapabilityType::Unset) {
-        return ResultInvalidCapabilityDescriptor;
+        return ResultInvalidArgument;
     }
 
     // Bail early on ignorable entries, as one would expect,
@@ -202,7 +202,7 @@ ResultCode ProcessCapabilities::ParseSingleFlagCapability(u32& set_flags, u32& s
     }
 
     LOG_ERROR(Kernel, "Invalid capability type! type={}", type);
-    return ResultInvalidCapabilityDescriptor;
+    return ResultInvalidArgument;
 }
 
 void ProcessCapabilities::Clear() {
@@ -225,7 +225,7 @@ ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
     if (priority_mask != 0 || core_mask != 0) {
         LOG_ERROR(Kernel, "Core or priority mask are not zero! priority_mask={}, core_mask={}",
                   priority_mask, core_mask);
-        return ResultInvalidCapabilityDescriptor;
+        return ResultInvalidArgument;
     }
 
     const u32 core_num_min = (flags >> 16) & 0xFF;
@@ -329,7 +329,7 @@ ResultCode ProcessCapabilities::HandleProgramTypeFlags(u32 flags) {
     const u32 reserved = flags >> 17;
     if (reserved != 0) {
         LOG_ERROR(Kernel, "Reserved value is non-zero! reserved={}", reserved);
-        return ResultReservedValue;
+        return ResultReservedUsed;
     }
 
     program_type = static_cast<ProgramType>((flags >> 14) & 0b111);
@@ -349,7 +349,7 @@ ResultCode ProcessCapabilities::HandleKernelVersionFlags(u32 flags) {
         LOG_ERROR(Kernel,
                   "Kernel version is non zero or flags are too small! major_version={}, flags={}",
                   major_version, flags);
-        return ResultInvalidCapabilityDescriptor;
+        return ResultInvalidArgument;
     }
 
     kernel_version = flags;
@@ -360,7 +360,7 @@ ResultCode ProcessCapabilities::HandleHandleTableFlags(u32 flags) {
     const u32 reserved = flags >> 26;
     if (reserved != 0) {
         LOG_ERROR(Kernel, "Reserved value is non-zero! reserved={}", reserved);
-        return ResultReservedValue;
+        return ResultReservedUsed;
     }
 
     handle_table_size = static_cast<s32>((flags >> 16) & 0x3FF);
@@ -371,7 +371,7 @@ ResultCode ProcessCapabilities::HandleDebugFlags(u32 flags) {
     const u32 reserved = flags >> 19;
     if (reserved != 0) {
         LOG_ERROR(Kernel, "Reserved value is non-zero! reserved={}", reserved);
-        return ResultReservedValue;
+        return ResultReservedUsed;
     }
 
     is_debuggable = (flags & 0x20000) != 0;

src/core/hle/kernel/server_port.cpp

@@ -1,54 +0,0 @@
-// Copyright 2016 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <tuple>
-#include "common/assert.h"
-#include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/k_thread.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/server_port.h"
-#include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/svc_results.h"
-
-namespace Kernel {
-
-ServerPort::ServerPort(KernelCore& kernel) : KSynchronizationObject{kernel} {}
-ServerPort::~ServerPort() = default;
-
-ResultVal<std::shared_ptr<ServerSession>> ServerPort::Accept() {
-    if (pending_sessions.empty()) {
-        return ResultNotFound;
-    }
-
-    auto session = std::move(pending_sessions.back());
-    pending_sessions.pop_back();
-    return MakeResult(std::move(session));
-}
-
-void ServerPort::AppendPendingSession(std::shared_ptr<ServerSession> pending_session) {
-    pending_sessions.push_back(std::move(pending_session));
-    if (pending_sessions.size() == 1) {
-        NotifyAvailable();
-    }
-}
-
-bool ServerPort::IsSignaled() const {
-    return !pending_sessions.empty();
-}
-
-ServerPort::PortPair ServerPort::CreatePortPair(KernelCore& kernel, u32 max_sessions,
-                                                std::string name) {
-    std::shared_ptr<ServerPort> server_port = std::make_shared<ServerPort>(kernel);
-    std::shared_ptr<ClientPort> client_port = std::make_shared<ClientPort>(kernel);
-
-    server_port->name = name + "_Server";
-    client_port->name = name + "_Client";
-    client_port->server_port = server_port;
-    client_port->max_sessions = max_sessions;
-    client_port->active_sessions = 0;
-
-    return std::make_pair(std::move(server_port), std::move(client_port));
-}
-
-} // namespace Kernel

src/core/hle/kernel/server_port.h

@@ -1,98 +0,0 @@
-// Copyright 2016 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-#include <string>
-#include <utility>
-#include <vector>
-#include "common/common_types.h"
-#include "core/hle/kernel/k_synchronization_object.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/result.h"
-
-namespace Kernel {
-
-class ClientPort;
-class KernelCore;
-class ServerSession;
-class SessionRequestHandler;
-
-class ServerPort final : public KSynchronizationObject {
-public:
-    explicit ServerPort(KernelCore& kernel);
-    ~ServerPort() override;
-
-    using HLEHandler = std::shared_ptr<SessionRequestHandler>;
-    using PortPair = std::pair<std::shared_ptr<ServerPort>, std::shared_ptr<ClientPort>>;
-
-    /**
-     * Creates a pair of ServerPort and an associated ClientPort.
-     *
-     * @param kernel The kernel instance to create the port pair under.
-     * @param max_sessions Maximum number of sessions to the port
-     * @param name Optional name of the ports
-     * @return The created port tuple
-     */
-    static PortPair CreatePortPair(KernelCore& kernel, u32 max_sessions,
-                                   std::string name = "UnknownPort");
-
-    std::string GetTypeName() const override {
-        return "ServerPort";
-    }
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::ServerPort;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    /**
-     * Accepts a pending incoming connection on this port. If there are no pending sessions, will
-     * return ERR_NO_PENDING_SESSIONS.
-     */
-    ResultVal<std::shared_ptr<ServerSession>> Accept();
-
-    /// Whether or not this server port has an HLE handler available.
-    bool HasHLEHandler() const {
-        return hle_handler != nullptr;
-    }
-
-    /// Gets the HLE handler for this port.
-    HLEHandler GetHLEHandler() const {
-        return hle_handler;
-    }
-
-    /**
-     * Sets the HLE handler template for the port. ServerSessions crated by connecting to this port
-     * will inherit a reference to this handler.
-     */
-    void SetHleHandler(HLEHandler hle_handler_) {
-        hle_handler = std::move(hle_handler_);
-    }
-
-    /// Appends a ServerSession to the collection of ServerSessions
-    /// waiting to be accepted by this port.
-    void AppendPendingSession(std::shared_ptr<ServerSession> pending_session);
-
-    bool IsSignaled() const override;
-
-    void Finalize() override {}
-
-private:
-    /// ServerSessions waiting to be accepted by the port
-    std::vector<std::shared_ptr<ServerSession>> pending_sessions;
-
-    /// This session's HLE request handler template (optional)
-    /// ServerSessions created from this port inherit a reference to this handler.
-    HLEHandler hle_handler;
-
-    /// Name of the port (optional)
-    std::string name;
-};
-
-} // namespace Kernel

src/core/hle/kernel/service_thread.cpp

@@ -13,8 +13,8 @@
 #include "common/scope_exit.h"
 #include "common/thread.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_session.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/service_thread.h"
 #include "core/hle/lock.h"
 #include "video_core/renderer_base.h"
@@ -26,7 +26,7 @@ public:
     explicit Impl(KernelCore& kernel, std::size_t num_threads, const std::string& name);
     ~Impl();
 
-    void QueueSyncRequest(ServerSession& session, std::shared_ptr<HLERequestContext>&& context);
+    void QueueSyncRequest(KSession& session, std::shared_ptr<HLERequestContext>&& context);
 
 private:
     std::vector<std::thread> threads;
@@ -69,18 +69,27 @@ ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std
         });
 }
 
-void ServiceThread::Impl::QueueSyncRequest(ServerSession& session,
+void ServiceThread::Impl::QueueSyncRequest(KSession& session,
                                            std::shared_ptr<HLERequestContext>&& context) {
     {
         std::unique_lock lock{queue_mutex};
 
-        // ServerSession owns the service thread, so we cannot caption a strong pointer here in the
-        // event that the ServerSession is terminated.
-        std::weak_ptr<ServerSession> weak_ptr{SharedFrom(&session)};
-        requests.emplace([weak_ptr, context{std::move(context)}]() {
-            if (auto strong_ptr = weak_ptr.lock()) {
-                strong_ptr->CompleteSyncRequest(*context);
+        // Open a reference to the session to ensure it is not closes while the service request
+        // completes asynchronously.
+        session.Open();
+
+        requests.emplace([session_ptr{&session}, context{std::move(context)}]() {
+            // Close the reference.
+            SCOPE_EXIT({ session_ptr->Close(); });
+
+            // If the session has been closed, we are done.
+            if (session_ptr->IsServerClosed()) {
+                return;
             }
+
+            // Complete the service request.
+            KScopedAutoObject server_session{&session_ptr->GetServerSession()};
+            server_session->CompleteSyncRequest(*context);
         });
     }
     condition.notify_one();
@@ -102,7 +111,7 @@ ServiceThread::ServiceThread(KernelCore& kernel, std::size_t num_threads, const
 
 ServiceThread::~ServiceThread() = default;
 
-void ServiceThread::QueueSyncRequest(ServerSession& session,
+void ServiceThread::QueueSyncRequest(KSession& session,
                                      std::shared_ptr<HLERequestContext>&& context) {
     impl->QueueSyncRequest(session, std::move(context));
 }

src/core/hle/kernel/service_thread.h

@@ -11,14 +11,14 @@ namespace Kernel {
 
 class HLERequestContext;
 class KernelCore;
-class ServerSession;
+class KSession;
 
 class ServiceThread final {
 public:
     explicit ServiceThread(KernelCore& kernel, std::size_t num_threads, const std::string& name);
     ~ServiceThread();
 
-    void QueueSyncRequest(ServerSession& session, std::shared_ptr<HLERequestContext>&& context);
+    void QueueSyncRequest(KSession& session, std::shared_ptr<HLERequestContext>&& context);
 
 private:
     class Impl;

src/core/hle/kernel/session.cpp

@@ -1,41 +0,0 @@
-// Copyright 2019 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "common/assert.h"
-#include "core/hle/kernel/client_session.h"
-#include "core/hle/kernel/k_scoped_resource_reservation.h"
-#include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/session.h"
-
-namespace Kernel {
-
-Session::Session(KernelCore& kernel) : KSynchronizationObject{kernel} {}
-Session::~Session() {
-    // Release reserved resource when the Session pair was created.
-    kernel.GetSystemResourceLimit()->Release(LimitableResource::Sessions, 1);
-}
-
-Session::SessionPair Session::Create(KernelCore& kernel, std::string name) {
-    // Reserve a new session from the resource limit.
-    KScopedResourceReservation session_reservation(kernel.GetSystemResourceLimit(),
-                                                   LimitableResource::Sessions);
-    ASSERT(session_reservation.Succeeded());
-    auto session{std::make_shared<Session>(kernel)};
-    auto client_session{Kernel::ClientSession::Create(kernel, session, name + "_Client").Unwrap()};
-    auto server_session{Kernel::ServerSession::Create(kernel, session, name + "_Server").Unwrap()};
-
-    session->name = std::move(name);
-    session->client = client_session;
-    session->server = server_session;
-
-    session_reservation.Commit();
-    return std::make_pair(std::move(client_session), std::move(server_session));
-}
-
-bool Session::IsSignaled() const {
-    UNIMPLEMENTED();
-    return true;
-}
-
-} // namespace Kernel

src/core/hle/kernel/session.h

@@ -1,64 +0,0 @@
-// Copyright 2019 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-#include <string>
-#include <utility>
-
-#include "core/hle/kernel/k_synchronization_object.h"
-
-namespace Kernel {
-
-class ClientSession;
-class ServerSession;
-
-/**
- * Parent structure to link the client and server endpoints of a session with their associated
- * client port.
- */
-class Session final : public KSynchronizationObject {
-public:
-    explicit Session(KernelCore& kernel);
-    ~Session() override;
-
-    using SessionPair = std::pair<std::shared_ptr<ClientSession>, std::shared_ptr<ServerSession>>;
-
-    static SessionPair Create(KernelCore& kernel, std::string name = "Unknown");
-
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::Session;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    bool IsSignaled() const override;
-
-    void Finalize() override {}
-
-    std::shared_ptr<ClientSession> Client() {
-        if (auto result{client.lock()}) {
-            return result;
-        }
-        return {};
-    }
-
-    std::shared_ptr<ServerSession> Server() {
-        if (auto result{server.lock()}) {
-            return result;
-        }
-        return {};
-    }
-
-private:
-    std::string name;
-    std::weak_ptr<ClientSession> client;
-    std::weak_ptr<ServerSession> server;
-};
-
-} // namespace Kernel

src/core/hle/kernel/slab_helpers.h

@@ -0,0 +1,148 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <atomic>
+
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/intrusive_red_black_tree.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_auto_object_container.h"
+#include "core/hle/kernel/k_light_lock.h"
+#include "core/hle/kernel/k_slab_heap.h"
+#include "core/hle/kernel/kernel.h"
+
+namespace Kernel {
+
+template <class Derived>
+class KSlabAllocated {
+public:
+    constexpr KSlabAllocated() = default;
+
+    size_t GetSlabIndex(KernelCore& kernel) const {
+        return kernel.SlabHeap<Derived>().GetIndex(static_cast<const Derived*>(this));
+    }
+
+public:
+    static void InitializeSlabHeap(KernelCore& kernel, void* memory, size_t memory_size) {
+        kernel.SlabHeap<Derived>().Initialize(memory, memory_size);
+    }
+
+    static Derived* Allocate(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().Allocate();
+    }
+
+    static void Free(KernelCore& kernel, Derived* obj) {
+        kernel.SlabHeap<Derived>().Free(obj);
+    }
+
+    static size_t GetObjectSize(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetObjectSize();
+    }
+
+    static size_t GetSlabHeapSize(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetSlabHeapSize();
+    }
+
+    static size_t GetPeakIndex(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetPeakIndex();
+    }
+
+    static uintptr_t GetSlabHeapAddress(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetSlabHeapAddress();
+    }
+
+    static size_t GetNumRemaining(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetNumRemaining();
+    }
+};
+
+template <typename Derived, typename Base>
+class KAutoObjectWithSlabHeapAndContainer : public Base {
+    static_assert(std::is_base_of<KAutoObjectWithList, Base>::value);
+
+private:
+    static Derived* Allocate(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().AllocateWithKernel(kernel);
+    }
+
+    static void Free(KernelCore& kernel, Derived* obj) {
+        kernel.SlabHeap<Derived>().Free(obj);
+    }
+
+public:
+    KAutoObjectWithSlabHeapAndContainer(KernelCore& kernel_) : Base(kernel_), kernel(kernel_) {}
+    virtual ~KAutoObjectWithSlabHeapAndContainer() {}
+
+    virtual void Destroy() override {
+        const bool is_initialized = this->IsInitialized();
+        uintptr_t arg = 0;
+        if (is_initialized) {
+            kernel.ObjectListContainer().Unregister(this);
+            arg = this->GetPostDestroyArgument();
+            this->Finalize();
+        }
+        Free(kernel, static_cast<Derived*>(this));
+        if (is_initialized) {
+            Derived::PostDestroy(arg);
+        }
+    }
+
+    virtual bool IsInitialized() const {
+        return true;
+    }
+    virtual uintptr_t GetPostDestroyArgument() const {
+        return 0;
+    }
+
+    size_t GetSlabIndex() const {
+        return SlabHeap<Derived>(kernel).GetObjectIndex(static_cast<const Derived*>(this));
+    }
+
+public:
+    static void InitializeSlabHeap(KernelCore& kernel, void* memory, size_t memory_size) {
+        kernel.SlabHeap<Derived>().Initialize(memory, memory_size);
+        kernel.ObjectListContainer().Initialize();
+    }
+
+    static Derived* Create(KernelCore& kernel) {
+        Derived* obj = Allocate(kernel);
+        if (obj != nullptr) {
+            KAutoObject::Create(obj);
+        }
+        return obj;
+    }
+
+    static void Register(KernelCore& kernel, Derived* obj) {
+        return kernel.ObjectListContainer().Register(obj);
+    }
+
+    static size_t GetObjectSize(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetObjectSize();
+    }
+
+    static size_t GetSlabHeapSize(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetSlabHeapSize();
+    }
+
+    static size_t GetPeakIndex(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetPeakIndex();
+    }
+
+    static uintptr_t GetSlabHeapAddress(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetSlabHeapAddress();
+    }
+
+    static size_t GetNumRemaining(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetNumRemaining();
+    }
+
+protected:
+    KernelCore& kernel;
+};
+
+} // namespace Kernel

src/core/hle/kernel/svc_common.h

@@ -6,9 +6,24 @@
 
 #include "common/common_types.h"
 
+namespace Kernel {
+using Handle = u32;
+}
+
 namespace Kernel::Svc {
 
 constexpr s32 ArgumentHandleCountMax = 0x40;
 constexpr u32 HandleWaitMask{1u << 30};
 
+constexpr inline Handle InvalidHandle = Handle(0);
+
+enum PseudoHandle : Handle {
+    CurrentThread = 0xFFFF8000,
+    CurrentProcess = 0xFFFF8001,
+};
+
+constexpr bool IsPseudoHandle(Handle handle) {
+    return handle == PseudoHandle::CurrentProcess || handle == PseudoHandle::CurrentThread;
+}
+
 } // namespace Kernel::Svc

src/core/hle/kernel/svc_results.h

@@ -10,18 +10,18 @@ namespace Kernel {
 
 // Confirmed Switch kernel error codes
 
-constexpr ResultCode ResultMaxConnectionsReached{ErrorModule::Kernel, 7};
-constexpr ResultCode ResultInvalidCapabilityDescriptor{ErrorModule::Kernel, 14};
+constexpr ResultCode ResultOutOfSessions{ErrorModule::Kernel, 7};
+constexpr ResultCode ResultInvalidArgument{ErrorModule::Kernel, 14};
 constexpr ResultCode ResultNoSynchronizationObject{ErrorModule::Kernel, 57};
 constexpr ResultCode ResultTerminationRequested{ErrorModule::Kernel, 59};
 constexpr ResultCode ResultInvalidSize{ErrorModule::Kernel, 101};
 constexpr ResultCode ResultInvalidAddress{ErrorModule::Kernel, 102};
 constexpr ResultCode ResultOutOfResource{ErrorModule::Kernel, 103};
 constexpr ResultCode ResultOutOfMemory{ErrorModule::Kernel, 104};
-constexpr ResultCode ResultHandleTableFull{ErrorModule::Kernel, 105};
+constexpr ResultCode ResultOutOfHandles{ErrorModule::Kernel, 105};
 constexpr ResultCode ResultInvalidCurrentMemory{ErrorModule::Kernel, 106};
-constexpr ResultCode ResultInvalidMemoryPermissions{ErrorModule::Kernel, 108};
-constexpr ResultCode ResultInvalidMemoryRange{ErrorModule::Kernel, 110};
+constexpr ResultCode ResultInvalidNewMemoryPermission{ErrorModule::Kernel, 108};
+constexpr ResultCode ResultInvalidMemoryRegion{ErrorModule::Kernel, 110};
 constexpr ResultCode ResultInvalidPriority{ErrorModule::Kernel, 112};
 constexpr ResultCode ResultInvalidCoreId{ErrorModule::Kernel, 113};
 constexpr ResultCode ResultInvalidHandle{ErrorModule::Kernel, 114};
@@ -33,9 +33,11 @@ constexpr ResultCode ResultOutOfRange{ErrorModule::Kernel, 119};
 constexpr ResultCode ResultInvalidEnumValue{ErrorModule::Kernel, 120};
 constexpr ResultCode ResultNotFound{ErrorModule::Kernel, 121};
 constexpr ResultCode ResultBusy{ErrorModule::Kernel, 122};
-constexpr ResultCode ResultSessionClosedByRemote{ErrorModule::Kernel, 123};
+constexpr ResultCode ResultSessionClosed{ErrorModule::Kernel, 123};
 constexpr ResultCode ResultInvalidState{ErrorModule::Kernel, 125};
-constexpr ResultCode ResultReservedValue{ErrorModule::Kernel, 126};
-constexpr ResultCode ResultResourceLimitedExceeded{ErrorModule::Kernel, 132};
+constexpr ResultCode ResultReservedUsed{ErrorModule::Kernel, 126};
+constexpr ResultCode ResultPortClosed{ErrorModule::Kernel, 131};
+constexpr ResultCode ResultLimitReached{ErrorModule::Kernel, 132};
+constexpr ResultCode ResultInvalidId{ErrorModule::Kernel, 519};
 
 } // namespace Kernel

src/core/hle/kernel/svc_wrap.h

@@ -154,15 +154,28 @@ void SvcWrap64(Core::System& system) {
     FuncReturn(system, retval);
 }
 
+// Used by GetResourceLimitLimitValue.
+template <ResultCode func(Core::System&, u64*, Handle, LimitableResource)>
+void SvcWrap64(Core::System& system) {
+    u64 param_1 = 0;
+    const u32 retval = func(system, &param_1, static_cast<Handle>(Param(system, 1)),
+                            static_cast<LimitableResource>(Param(system, 2)))
+                           .raw;
+
+    system.CurrentArmInterface().SetReg(1, param_1);
+    FuncReturn(system, retval);
+}
+
 template <ResultCode func(Core::System&, u32, u64)>
 void SvcWrap64(Core::System& system) {
     FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)), Param(system, 1)).raw);
 }
 
-template <ResultCode func(Core::System&, u32, u32, u64)>
+// Used by SetResourceLimitLimitValue
+template <ResultCode func(Core::System&, Handle, LimitableResource, u64)>
 void SvcWrap64(Core::System& system) {
-    FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)),
-                            static_cast<u32>(Param(system, 1)), Param(system, 2))
+    FuncReturn(system, func(system, static_cast<Handle>(Param(system, 0)),
+                            static_cast<LimitableResource>(Param(system, 1)), Param(system, 2))
                            .raw);
 }
 
@@ -219,10 +232,11 @@ void SvcWrap64(Core::System& system) {
         func(system, Param(system, 0), Param(system, 1), static_cast<u32>(Param(system, 2))).raw);
 }
 
-template <ResultCode func(Core::System&, u32, u64, u64, u32)>
+// Used by MapSharedMemory
+template <ResultCode func(Core::System&, Handle, u64, u64, Svc::MemoryPermission)>
 void SvcWrap64(Core::System& system) {
-    FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)), Param(system, 1),
-                            Param(system, 2), static_cast<u32>(Param(system, 3)))
+    FuncReturn(system, func(system, static_cast<Handle>(Param(system, 0)), Param(system, 1),
+                            Param(system, 2), static_cast<Svc::MemoryPermission>(Param(system, 3)))
                            .raw);
 }
 
@@ -252,11 +266,13 @@ void SvcWrap64(Core::System& system) {
                            .raw);
 }
 
-template <ResultCode func(Core::System&, u64*, u64, u64, u64)>
+// Used by GetInfo
+template <ResultCode func(Core::System&, u64*, u64, Handle, u64)>
 void SvcWrap64(Core::System& system) {
     u64 param_1 = 0;
-    const u32 retval =
-        func(system, &param_1, Param(system, 1), Param(system, 2), Param(system, 3)).raw;
+    const u32 retval = func(system, &param_1, Param(system, 1),
+                            static_cast<Handle>(Param(system, 2)), Param(system, 3))
+                           .raw;
 
     system.CurrentArmInterface().SetReg(1, param_1);
     FuncReturn(system, retval);
@@ -273,11 +289,12 @@ void SvcWrap64(Core::System& system) {
     FuncReturn(system, retval);
 }
 
-template <ResultCode func(Core::System&, u32*, u64, u64, u32)>
+// Used by CreateTransferMemory
+template <ResultCode func(Core::System&, Handle*, u64, u64, Svc::MemoryPermission)>
 void SvcWrap64(Core::System& system) {
     u32 param_1 = 0;
     const u32 retval = func(system, &param_1, Param(system, 1), Param(system, 2),
-                            static_cast<u32>(Param(system, 3)))
+                            static_cast<Svc::MemoryPermission>(Param(system, 3)))
                            .raw;
 
     system.CurrentArmInterface().SetReg(1, param_1);
@@ -537,6 +554,16 @@ void SvcWrap32(Core::System& system) {
     FuncReturn(system, retval);
 }
 
+// Used by MapSharedMemory32
+template <ResultCode func(Core::System&, Handle, u32, u32, Svc::MemoryPermission)>
+void SvcWrap32(Core::System& system) {
+    const u32 retval = func(system, static_cast<Handle>(Param(system, 0)),
+                            static_cast<u32>(Param(system, 1)), static_cast<u32>(Param(system, 2)),
+                            static_cast<Svc::MemoryPermission>(Param(system, 3)))
+                           .raw;
+    FuncReturn(system, retval);
+}
+
 // Used by SetThreadCoreMask32
 template <ResultCode func(Core::System&, Handle, s32, u32, u32)>
 void SvcWrap32(Core::System& system) {
@@ -586,11 +613,12 @@ void SvcWrap32(Core::System& system) {
 }
 
 // Used by CreateTransferMemory32
-template <ResultCode func(Core::System&, Handle*, u32, u32, u32)>
+template <ResultCode func(Core::System&, Handle*, u32, u32, Svc::MemoryPermission)>
 void SvcWrap32(Core::System& system) {
     Handle handle = 0;
-    const u32 retval =
-        func(system, &handle, Param32(system, 1), Param32(system, 2), Param32(system, 3)).raw;
+    const u32 retval = func(system, &handle, Param32(system, 1), Param32(system, 2),
+                            static_cast<Svc::MemoryPermission>(Param32(system, 3)))
+                           .raw;
     system.CurrentArmInterface().SetReg(1, handle);
     FuncReturn(system, retval);
 }

src/core/hle/kernel/time_manager.cpp

@@ -6,7 +6,6 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/core_timing_util.h"
-#include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
@@ -15,16 +14,12 @@
 namespace Kernel {
 
 TimeManager::TimeManager(Core::System& system_) : system{system_} {
-    time_manager_event_type = Core::Timing::CreateEvent(
-        "Kernel::TimeManagerCallback",
-        [this](std::uintptr_t thread_handle, std::chrono::nanoseconds) {
-            std::shared_ptr<KThread> thread;
-            {
-                std::lock_guard lock{mutex};
-                thread = SharedFrom<KThread>(reinterpret_cast<KThread*>(thread_handle));
-            }
-            thread->Wakeup();
-        });
+    time_manager_event_type =
+        Core::Timing::CreateEvent("Kernel::TimeManagerCallback",
+                                  [this](std::uintptr_t thread_handle, std::chrono::nanoseconds) {
+                                      KThread* thread = reinterpret_cast<KThread*>(thread_handle);
+                                      thread->Wakeup();
+                                  });
 }
 
 void TimeManager::ScheduleTimeEvent(KThread* thread, s64 nanoseconds) {

src/core/hle/kernel/time_manager.h

@@ -8,8 +8,6 @@
 #include <mutex>
 #include <unordered_map>
 
-#include "core/hle/kernel/object.h"
-
 namespace Core {
 class System;
 } // namespace Core

src/core/hle/service/acc/acc.cpp

@@ -16,8 +16,8 @@
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/service/acc/acc.h"
 #include "core/hle/service/acc/acc_aa.h"
 #include "core/hle/service/acc/acc_su.h"

src/core/hle/service/am/am.cpp

@@ -15,11 +15,11 @@
 #include "core/file_sys/savedata_factory.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_transfer_memory.h"
 #include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
-#include "core/hle/kernel/transfer_memory.h"
 #include "core/hle/service/acc/profile_manager.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applet_ae.h"
@@ -42,6 +42,7 @@
 #include "core/hle/service/set/set.h"
 #include "core/hle/service/sm/sm.h"
 #include "core/hle/service/vi/vi.h"
+#include "core/memory.h"
 
 namespace Service::AM {
 
@@ -253,7 +254,8 @@ IDebugFunctions::IDebugFunctions(Core::System& system_)
 IDebugFunctions::~IDebugFunctions() = default;
 
 ISelfController::ISelfController(Core::System& system_, NVFlinger::NVFlinger& nvflinger_)
-    : ServiceFramework{system_, "ISelfController"}, nvflinger{nvflinger_} {
+    : ServiceFramework{system_, "ISelfController"}, nvflinger{nvflinger_},
+      launchable_event{system.Kernel()}, accumulated_suspended_tick_changed_event{system.Kernel()} {
     // clang-format off
     static const FunctionInfo functions[] = {
         {0, &ISelfController::Exit, "Exit"},
@@ -306,19 +308,20 @@ ISelfController::ISelfController(Core::System& system_, NVFlinger::NVFlinger& nv
 
     RegisterHandlers(functions);
 
-    auto& kernel = system.Kernel();
-    launchable_event = Kernel::KEvent::Create(kernel, "ISelfController:LaunchableEvent");
-    launchable_event->Initialize();
+    Kernel::KAutoObject::Create(std::addressof(launchable_event));
+
+    launchable_event.Initialize("ISelfController:LaunchableEvent");
 
     // This event is created by AM on the first time GetAccumulatedSuspendedTickChangedEvent() is
     // called. Yuzu can just create it unconditionally, since it doesn't need to support multiple
     // ISelfControllers. The event is signaled on creation, and on transition from suspended -> not
     // suspended if the event has previously been created by a call to
     // GetAccumulatedSuspendedTickChangedEvent.
-    accumulated_suspended_tick_changed_event =
-        Kernel::KEvent::Create(kernel, "ISelfController:AccumulatedSuspendedTickChangedEvent");
-    accumulated_suspended_tick_changed_event->Initialize();
-    accumulated_suspended_tick_changed_event->GetWritableEvent()->Signal();
+
+    Kernel::KAutoObject::Create(std::addressof(accumulated_suspended_tick_changed_event));
+    accumulated_suspended_tick_changed_event.Initialize(
+        "ISelfController:AccumulatedSuspendedTickChangedEvent");
+    accumulated_suspended_tick_changed_event.GetWritableEvent().Signal();
 }
 
 ISelfController::~ISelfController() = default;
@@ -377,11 +380,11 @@ void ISelfController::LeaveFatalSection(Kernel::HLERequestContext& ctx) {
 void ISelfController::GetLibraryAppletLaunchableEvent(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_AM, "(STUBBED) called");
 
-    launchable_event->GetWritableEvent()->Signal();
+    launchable_event.GetWritableEvent().Signal();
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(launchable_event->GetReadableEvent());
+    rb.PushCopyObjects(launchable_event.GetReadableEvent());
 }
 
 void ISelfController::SetScreenShotPermission(Kernel::HLERequestContext& ctx) {
@@ -560,7 +563,7 @@ void ISelfController::GetAccumulatedSuspendedTickChangedEvent(Kernel::HLERequest
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(accumulated_suspended_tick_changed_event->GetReadableEvent());
+    rb.PushCopyObjects(accumulated_suspended_tick_changed_event.GetReadableEvent());
 }
 
 void ISelfController::SetAlbumImageTakenNotificationEnabled(Kernel::HLERequestContext& ctx) {
@@ -578,39 +581,40 @@ void ISelfController::SetAlbumImageTakenNotificationEnabled(Kernel::HLERequestCo
     rb.Push(RESULT_SUCCESS);
 }
 
-AppletMessageQueue::AppletMessageQueue(Kernel::KernelCore& kernel) {
-    on_new_message = Kernel::KEvent::Create(kernel, "AMMessageQueue:OnMessageReceived");
-    on_new_message->Initialize();
-    on_operation_mode_changed =
-        Kernel::KEvent::Create(kernel, "AMMessageQueue:OperationModeChanged");
-    on_operation_mode_changed->Initialize();
+AppletMessageQueue::AppletMessageQueue(Kernel::KernelCore& kernel)
+    : on_new_message{kernel}, on_operation_mode_changed{kernel} {
+
+    Kernel::KAutoObject::Create(std::addressof(on_new_message));
+    Kernel::KAutoObject::Create(std::addressof(on_operation_mode_changed));
+
+    on_new_message.Initialize("AMMessageQueue:OnMessageReceived");
+    on_operation_mode_changed.Initialize("AMMessageQueue:OperationModeChanged");
 }
 
 AppletMessageQueue::~AppletMessageQueue() = default;
 
-const std::shared_ptr<Kernel::KReadableEvent>& AppletMessageQueue::GetMessageReceiveEvent() const {
-    return on_new_message->GetReadableEvent();
+Kernel::KReadableEvent& AppletMessageQueue::GetMessageReceiveEvent() {
+    return on_new_message.GetReadableEvent();
 }
 
-const std::shared_ptr<Kernel::KReadableEvent>& AppletMessageQueue::GetOperationModeChangedEvent()
-    const {
-    return on_operation_mode_changed->GetReadableEvent();
+Kernel::KReadableEvent& AppletMessageQueue::GetOperationModeChangedEvent() {
+    return on_operation_mode_changed.GetReadableEvent();
 }
 
 void AppletMessageQueue::PushMessage(AppletMessage msg) {
     messages.push(msg);
-    on_new_message->GetWritableEvent()->Signal();
+    on_new_message.GetWritableEvent().Signal();
 }
 
 AppletMessageQueue::AppletMessage AppletMessageQueue::PopMessage() {
     if (messages.empty()) {
-        on_new_message->GetWritableEvent()->Clear();
+        on_new_message.GetWritableEvent().Clear();
         return AppletMessage::NoMessage;
     }
     auto msg = messages.front();
     messages.pop();
     if (messages.empty()) {
-        on_new_message->GetWritableEvent()->Clear();
+        on_new_message.GetWritableEvent().Clear();
     }
     return msg;
 }
@@ -630,7 +634,7 @@ void AppletMessageQueue::FocusStateChanged() {
 void AppletMessageQueue::OperationModeChanged() {
     PushMessage(AppletMessage::OperationModeChanged);
     PushMessage(AppletMessage::PerformanceModeChanged);
-    on_operation_mode_changed->GetWritableEvent()->Signal();
+    on_operation_mode_changed.GetWritableEvent().Signal();
 }
 
 ICommonStateGetter::ICommonStateGetter(Core::System& system_,
@@ -927,11 +931,9 @@ private:
     void GetAppletStateChangedEvent(Kernel::HLERequestContext& ctx) {
         LOG_DEBUG(Service_AM, "called");
 
-        const auto event = applet->GetBroker().GetStateChangedEvent();
-
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(event);
+        rb.PushCopyObjects(applet->GetBroker().GetStateChangedEvent());
     }
 
     void IsCompleted(Kernel::HLERequestContext& ctx) {
@@ -1213,16 +1215,16 @@ void ILibraryAppletCreator::CreateTransferMemoryStorage(Kernel::HLERequestContex
     }
 
     auto transfer_mem =
-        system.CurrentProcess()->GetHandleTable().Get<Kernel::TransferMemory>(handle);
+        system.CurrentProcess()->GetHandleTable().GetObject<Kernel::KTransferMemory>(handle);
 
-    if (transfer_mem == nullptr) {
+    if (transfer_mem.IsNull()) {
         LOG_ERROR(Service_AM, "transfer_mem is a nullptr for handle={:08X}", handle);
         IPC::ResponseBuilder rb{ctx, 2};
         rb.Push(RESULT_UNKNOWN);
         return;
     }
 
-    const u8* const mem_begin = transfer_mem->GetPointer();
+    const u8* const mem_begin = system.Memory().GetPointer(transfer_mem->GetSourceAddress());
     const u8* const mem_end = mem_begin + transfer_mem->GetSize();
     std::vector<u8> memory{mem_begin, mem_end};
 
@@ -1247,16 +1249,16 @@ void ILibraryAppletCreator::CreateHandleStorage(Kernel::HLERequestContext& ctx)
     }
 
     auto transfer_mem =
-        system.CurrentProcess()->GetHandleTable().Get<Kernel::TransferMemory>(handle);
+        system.CurrentProcess()->GetHandleTable().GetObject<Kernel::KTransferMemory>(handle);
 
-    if (transfer_mem == nullptr) {
+    if (transfer_mem.IsNull()) {
         LOG_ERROR(Service_AM, "transfer_mem is a nullptr for handle={:08X}", handle);
         IPC::ResponseBuilder rb{ctx, 2};
         rb.Push(RESULT_UNKNOWN);
         return;
     }
 
-    const u8* const mem_begin = transfer_mem->GetPointer();
+    const u8* const mem_begin = system.Memory().GetPointer(transfer_mem->GetSourceAddress());
     const u8* const mem_end = mem_begin + transfer_mem->GetSize();
     std::vector<u8> memory{mem_begin, mem_end};
 
@@ -1266,7 +1268,9 @@ void ILibraryAppletCreator::CreateHandleStorage(Kernel::HLERequestContext& ctx)
 }
 
 IApplicationFunctions::IApplicationFunctions(Core::System& system_)
-    : ServiceFramework{system_, "IApplicationFunctions"} {
+    : ServiceFramework{system_, "IApplicationFunctions"}, gpu_error_detected_event{system.Kernel()},
+      friend_invitation_storage_channel_event{system.Kernel()},
+      health_warning_disappeared_system_event{system.Kernel()} {
     // clang-format off
     static const FunctionInfo functions[] = {
         {1, &IApplicationFunctions::PopLaunchParameter, "PopLaunchParameter"},
@@ -1334,16 +1338,15 @@ IApplicationFunctions::IApplicationFunctions(Core::System& system_)
 
     RegisterHandlers(functions);
 
-    auto& kernel = system.Kernel();
-    gpu_error_detected_event =
-        Kernel::KEvent::Create(kernel, "IApplicationFunctions:GpuErrorDetectedSystemEvent");
-    gpu_error_detected_event->Initialize();
-    friend_invitation_storage_channel_event =
-        Kernel::KEvent::Create(kernel, "IApplicationFunctions:FriendInvitationStorageChannelEvent");
-    friend_invitation_storage_channel_event->Initialize();
-    health_warning_disappeared_system_event =
-        Kernel::KEvent::Create(kernel, "IApplicationFunctions:HealthWarningDisappearedSystemEvent");
-    health_warning_disappeared_system_event->Initialize();
+    Kernel::KAutoObject::Create(std::addressof(gpu_error_detected_event));
+    Kernel::KAutoObject::Create(std::addressof(friend_invitation_storage_channel_event));
+    Kernel::KAutoObject::Create(std::addressof(health_warning_disappeared_system_event));
+
+    gpu_error_detected_event.Initialize("IApplicationFunctions:GpuErrorDetectedSystemEvent");
+    friend_invitation_storage_channel_event.Initialize(
+        "IApplicationFunctions:FriendInvitationStorageChannelEvent");
+    health_warning_disappeared_system_event.Initialize(
+        "IApplicationFunctions:HealthWarningDisappearedSystemEvent");
 }
 
 IApplicationFunctions::~IApplicationFunctions() = default;
@@ -1740,7 +1743,7 @@ void IApplicationFunctions::GetGpuErrorDetectedSystemEvent(Kernel::HLERequestCon
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(gpu_error_detected_event->GetReadableEvent());
+    rb.PushCopyObjects(gpu_error_detected_event.GetReadableEvent());
 }
 
 void IApplicationFunctions::GetFriendInvitationStorageChannelEvent(Kernel::HLERequestContext& ctx) {
@@ -1748,7 +1751,7 @@ void IApplicationFunctions::GetFriendInvitationStorageChannelEvent(Kernel::HLERe
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(friend_invitation_storage_channel_event->GetReadableEvent());
+    rb.PushCopyObjects(friend_invitation_storage_channel_event.GetReadableEvent());
 }
 
 void IApplicationFunctions::TryPopFromFriendInvitationStorageChannel(
@@ -1764,7 +1767,7 @@ void IApplicationFunctions::GetHealthWarningDisappearedSystemEvent(Kernel::HLERe
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(health_warning_disappeared_system_event->GetReadableEvent());
+    rb.PushCopyObjects(health_warning_disappeared_system_event.GetReadableEvent());
 }
 
 void InstallInterfaces(SM::ServiceManager& service_manager, NVFlinger::NVFlinger& nvflinger,
@@ -1782,7 +1785,8 @@ void InstallInterfaces(SM::ServiceManager& service_manager, NVFlinger::NVFlinger
 }
 
 IHomeMenuFunctions::IHomeMenuFunctions(Core::System& system_)
-    : ServiceFramework{system_, "IHomeMenuFunctions"} {
+    : ServiceFramework{system_, "IHomeMenuFunctions"}, pop_from_general_channel_event{
+                                                           system.Kernel()} {
     // clang-format off
     static const FunctionInfo functions[] = {
         {10, &IHomeMenuFunctions::RequestToGetForeground, "RequestToGetForeground"},
@@ -1803,9 +1807,8 @@ IHomeMenuFunctions::IHomeMenuFunctions(Core::System& system_)
 
     RegisterHandlers(functions);
 
-    pop_from_general_channel_event =
-        Kernel::KEvent::Create(system.Kernel(), "IHomeMenuFunctions:PopFromGeneralChannelEvent");
-    pop_from_general_channel_event->Initialize();
+    Kernel::KAutoObject::Create(std::addressof(pop_from_general_channel_event));
+    pop_from_general_channel_event.Initialize("IHomeMenuFunctions:PopFromGeneralChannelEvent");
 }
 
 IHomeMenuFunctions::~IHomeMenuFunctions() = default;
@@ -1822,7 +1825,7 @@ void IHomeMenuFunctions::GetPopFromGeneralChannelEvent(Kernel::HLERequestContext
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(pop_from_general_channel_event->GetReadableEvent());
+    rb.PushCopyObjects(pop_from_general_channel_event.GetReadableEvent());
 }
 
 IGlobalStateController::IGlobalStateController(Core::System& system_)

src/core/hle/service/am/am.h

@@ -8,12 +8,12 @@
 #include <memory>
 #include <queue>
 
+#include "core/hle/kernel/k_event.h"
 #include "core/hle/service/service.h"
 
 namespace Kernel {
 class KernelCore;
-class KEvent;
-class TransferMemory;
+class KTransferMemory;
 } // namespace Kernel
 
 namespace Service::NVFlinger {
@@ -56,8 +56,8 @@ public:
     explicit AppletMessageQueue(Kernel::KernelCore& kernel);
     ~AppletMessageQueue();
 
-    const std::shared_ptr<Kernel::KReadableEvent>& GetMessageReceiveEvent() const;
-    const std::shared_ptr<Kernel::KReadableEvent>& GetOperationModeChangedEvent() const;
+    Kernel::KReadableEvent& GetMessageReceiveEvent();
+    Kernel::KReadableEvent& GetOperationModeChangedEvent();
     void PushMessage(AppletMessage msg);
     AppletMessage PopMessage();
     std::size_t GetMessageCount() const;
@@ -67,8 +67,8 @@ public:
 
 private:
     std::queue<AppletMessage> messages;
-    std::shared_ptr<Kernel::KEvent> on_new_message;
-    std::shared_ptr<Kernel::KEvent> on_operation_mode_changed;
+    Kernel::KEvent on_new_message;
+    Kernel::KEvent on_operation_mode_changed;
 };
 
 class IWindowController final : public ServiceFramework<IWindowController> {
@@ -156,8 +156,8 @@ private:
     };
 
     NVFlinger::NVFlinger& nvflinger;
-    std::shared_ptr<Kernel::KEvent> launchable_event;
-    std::shared_ptr<Kernel::KEvent> accumulated_suspended_tick_changed_event;
+    Kernel::KEvent launchable_event;
+    Kernel::KEvent accumulated_suspended_tick_changed_event;
 
     u32 idle_time_detection_extension = 0;
     u64 num_fatal_sections_entered = 0;
@@ -300,9 +300,9 @@ private:
     bool launch_popped_application_specific = false;
     bool launch_popped_account_preselect = false;
     s32 previous_program_index{-1};
-    std::shared_ptr<Kernel::KEvent> gpu_error_detected_event;
-    std::shared_ptr<Kernel::KEvent> friend_invitation_storage_channel_event;
-    std::shared_ptr<Kernel::KEvent> health_warning_disappeared_system_event;
+    Kernel::KEvent gpu_error_detected_event;
+    Kernel::KEvent friend_invitation_storage_channel_event;
+    Kernel::KEvent health_warning_disappeared_system_event;
 };
 
 class IHomeMenuFunctions final : public ServiceFramework<IHomeMenuFunctions> {
@@ -314,7 +314,7 @@ private:
     void RequestToGetForeground(Kernel::HLERequestContext& ctx);
     void GetPopFromGeneralChannelEvent(Kernel::HLERequestContext& ctx);
 
-    std::shared_ptr<Kernel::KEvent> pop_from_general_channel_event;
+    Kernel::KEvent pop_from_general_channel_event;
 };
 
 class IGlobalStateController final : public ServiceFramework<IGlobalStateController> {

src/core/hle/service/am/applets/applets.cpp

@@ -12,10 +12,8 @@
 #include "core/frontend/applets/profile_select.h"
 #include "core/frontend/applets/software_keyboard.h"
 #include "core/frontend/applets/web_browser.h"
-#include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/k_writable_event.h"
-#include "core/hle/kernel/server_session.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applet_ae.h"
 #include "core/hle/service/am/applet_oe.h"
@@ -31,16 +29,16 @@
 namespace Service::AM::Applets {
 
 AppletDataBroker::AppletDataBroker(Core::System& system_, LibraryAppletMode applet_mode_)
-    : system{system_}, applet_mode{applet_mode_} {
-    state_changed_event =
-        Kernel::KEvent::Create(system.Kernel(), "ILibraryAppletAccessor:StateChangedEvent");
-    state_changed_event->Initialize();
-    pop_out_data_event =
-        Kernel::KEvent::Create(system.Kernel(), "ILibraryAppletAccessor:PopDataOutEvent");
-    pop_out_data_event->Initialize();
-    pop_interactive_out_data_event = Kernel::KEvent::Create(
-        system.Kernel(), "ILibraryAppletAccessor:PopInteractiveDataOutEvent");
-    pop_interactive_out_data_event->Initialize();
+    : system{system_}, applet_mode{applet_mode_}, state_changed_event{system.Kernel()},
+      pop_out_data_event{system.Kernel()}, pop_interactive_out_data_event{system.Kernel()} {
+
+    Kernel::KAutoObject::Create(std::addressof(state_changed_event));
+    Kernel::KAutoObject::Create(std::addressof(pop_out_data_event));
+    Kernel::KAutoObject::Create(std::addressof(pop_interactive_out_data_event));
+
+    state_changed_event.Initialize("ILibraryAppletAccessor:StateChangedEvent");
+    pop_out_data_event.Initialize("ILibraryAppletAccessor:PopDataOutEvent");
+    pop_interactive_out_data_event.Initialize("ILibraryAppletAccessor:PopInteractiveDataOutEvent");
 }
 
 AppletDataBroker::~AppletDataBroker() = default;
@@ -67,7 +65,7 @@ std::shared_ptr<IStorage> AppletDataBroker::PopNormalDataToGame() {
 
     auto out = std::move(out_channel.front());
     out_channel.pop_front();
-    pop_out_data_event->GetWritableEvent()->Clear();
+    pop_out_data_event.GetWritableEvent().Clear();
     return out;
 }
 
@@ -86,7 +84,7 @@ std::shared_ptr<IStorage> AppletDataBroker::PopInteractiveDataToGame() {
 
     auto out = std::move(out_interactive_channel.front());
     out_interactive_channel.pop_front();
-    pop_interactive_out_data_event->GetWritableEvent()->Clear();
+    pop_interactive_out_data_event.GetWritableEvent().Clear();
     return out;
 }
 
@@ -105,7 +103,7 @@ void AppletDataBroker::PushNormalDataFromGame(std::shared_ptr<IStorage>&& storag
 
 void AppletDataBroker::PushNormalDataFromApplet(std::shared_ptr<IStorage>&& storage) {
     out_channel.emplace_back(std::move(storage));
-    pop_out_data_event->GetWritableEvent()->Signal();
+    pop_out_data_event.GetWritableEvent().Signal();
 }
 
 void AppletDataBroker::PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& storage) {
@@ -114,11 +112,11 @@ void AppletDataBroker::PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& s
 
 void AppletDataBroker::PushInteractiveDataFromApplet(std::shared_ptr<IStorage>&& storage) {
     out_interactive_channel.emplace_back(std::move(storage));
-    pop_interactive_out_data_event->GetWritableEvent()->Signal();
+    pop_interactive_out_data_event.GetWritableEvent().Signal();
 }
 
-void AppletDataBroker::SignalStateChanged() const {
-    state_changed_event->GetWritableEvent()->Signal();
+void AppletDataBroker::SignalStateChanged() {
+    state_changed_event.GetWritableEvent().Signal();
 
     switch (applet_mode) {
     case LibraryAppletMode::AllForeground:
@@ -142,16 +140,16 @@ void AppletDataBroker::SignalStateChanged() const {
     }
 }
 
-std::shared_ptr<Kernel::KReadableEvent> AppletDataBroker::GetNormalDataEvent() const {
-    return pop_out_data_event->GetReadableEvent();
+Kernel::KReadableEvent& AppletDataBroker::GetNormalDataEvent() {
+    return pop_out_data_event.GetReadableEvent();
 }
 
-std::shared_ptr<Kernel::KReadableEvent> AppletDataBroker::GetInteractiveDataEvent() const {
-    return pop_interactive_out_data_event->GetReadableEvent();
+Kernel::KReadableEvent& AppletDataBroker::GetInteractiveDataEvent() {
+    return pop_interactive_out_data_event.GetReadableEvent();
 }
 
-std::shared_ptr<Kernel::KReadableEvent> AppletDataBroker::GetStateChangedEvent() const {
-    return state_changed_event->GetReadableEvent();
+Kernel::KReadableEvent& AppletDataBroker::GetStateChangedEvent() {
+    return state_changed_event.GetReadableEvent();
 }
 
 Applet::Applet(Core::System& system_, LibraryAppletMode applet_mode_)

src/core/hle/service/am/applets/applets.h

@@ -8,7 +8,7 @@
 #include <queue>
 
 #include "common/swap.h"
-#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/k_event.h"
 
 union ResultCode;
 
@@ -95,11 +95,11 @@ public:
     void PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& storage);
     void PushInteractiveDataFromApplet(std::shared_ptr<IStorage>&& storage);
 
-    void SignalStateChanged() const;
+    void SignalStateChanged();
 
-    std::shared_ptr<Kernel::KReadableEvent> GetNormalDataEvent() const;
-    std::shared_ptr<Kernel::KReadableEvent> GetInteractiveDataEvent() const;
-    std::shared_ptr<Kernel::KReadableEvent> GetStateChangedEvent() const;
+    Kernel::KReadableEvent& GetNormalDataEvent();
+    Kernel::KReadableEvent& GetInteractiveDataEvent();
+    Kernel::KReadableEvent& GetStateChangedEvent();
 
 private:
     Core::System& system;
@@ -119,13 +119,13 @@ private:
     // PopInteractiveDataToGame and PushInteractiveDataFromApplet
     std::deque<std::shared_ptr<IStorage>> out_interactive_channel;
 
-    std::shared_ptr<Kernel::KEvent> state_changed_event;
+    Kernel::KEvent state_changed_event;
 
     // Signaled on PushNormalDataFromApplet
-    std::shared_ptr<Kernel::KEvent> pop_out_data_event;
+    Kernel::KEvent pop_out_data_event;
 
     // Signaled on PushInteractiveDataFromApplet
-    std::shared_ptr<Kernel::KEvent> pop_interactive_out_data_event;
+    Kernel::KEvent pop_interactive_out_data_event;
 };
 
 class Applet {

src/core/hle/service/am/applets/error.cpp

@@ -9,7 +9,7 @@
 #include "common/string_util.h"
 #include "core/core.h"
 #include "core/frontend/applets/error.h"
-#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applets/error.h"
 #include "core/reporter.h"

src/core/hle/service/am/applets/general_backend.cpp

@@ -9,7 +9,7 @@
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/frontend/applets/general_frontend.h"
-#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/result.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applets/general_backend.h"

src/core/hle/service/am/applets/web_browser.cpp

@@ -17,7 +17,7 @@
 #include "core/file_sys/system_archive/system_archive.h"
 #include "core/file_sys/vfs_vector.h"
 #include "core/frontend/applets/web_browser.h"
-#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/result.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applets/web_browser.h"

src/core/hle/service/aoc/aoc_u.cpp

@@ -16,10 +16,9 @@
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/registered_cache.h"
 #include "core/hle/ipc_helpers.h"
-#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/process.h"
 #include "core/hle/service/aoc/aoc_u.h"
 #include "core/loader/loader.h"
 
@@ -50,7 +49,7 @@ static std::vector<u64> AccumulateAOCTitleIDs(Core::System& system) {
 class IPurchaseEventManager final : public ServiceFramework<IPurchaseEventManager> {
 public:
     explicit IPurchaseEventManager(Core::System& system_)
-        : ServiceFramework{system_, "IPurchaseEventManager"} {
+        : ServiceFramework{system_, "IPurchaseEventManager"}, purchased_event{system.Kernel()} {
         // clang-format off
         static const FunctionInfo functions[] = {
             {0, &IPurchaseEventManager::SetDefaultDeliveryTarget, "SetDefaultDeliveryTarget"},
@@ -63,9 +62,8 @@ public:
 
         RegisterHandlers(functions);
 
-        purchased_event =
-            Kernel::KEvent::Create(system.Kernel(), "IPurchaseEventManager:PurchasedEvent");
-        purchased_event->Initialize();
+        Kernel::KAutoObject::Create(std::addressof(purchased_event));
+        purchased_event.Initialize("IPurchaseEventManager:PurchasedEvent");
     }
 
 private:
@@ -98,14 +96,15 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(purchased_event->GetReadableEvent());
+        rb.PushCopyObjects(purchased_event.GetReadableEvent());
     }
 
-    std::shared_ptr<Kernel::KEvent> purchased_event;
+    Kernel::KEvent purchased_event;
 };
 
 AOC_U::AOC_U(Core::System& system_)
-    : ServiceFramework{system_, "aoc:u"}, add_on_content{AccumulateAOCTitleIDs(system)} {
+    : ServiceFramework{system_, "aoc:u"}, add_on_content{AccumulateAOCTitleIDs(system)},
+      aoc_change_event{system.Kernel()} {
     // clang-format off
     static const FunctionInfo functions[] = {
         {0, nullptr, "CountAddOnContentByApplicationId"},
@@ -127,9 +126,8 @@ AOC_U::AOC_U(Core::System& system_)
 
     RegisterHandlers(functions);
 
-    auto& kernel = system.Kernel();
-    aoc_change_event = Kernel::KEvent::Create(kernel, "GetAddOnContentListChanged:Event");
-    aoc_change_event->Initialize();
+    Kernel::KAutoObject::Create(std::addressof(aoc_change_event));
+    aoc_change_event.Initialize("GetAddOnContentListChanged:Event");
 }
 
 AOC_U::~AOC_U() = default;
@@ -256,7 +254,7 @@ void AOC_U::GetAddOnContentListChangedEvent(Kernel::HLERequestContext& ctx) {
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(aoc_change_event->GetReadableEvent());
+    rb.PushCopyObjects(aoc_change_event.GetReadableEvent());
 }
 
 void AOC_U::CreateEcPurchasedEventManager(Kernel::HLERequestContext& ctx) {

src/core/hle/service/aoc/aoc_u.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include "core/hle/kernel/k_event.h"
 #include "core/hle/service/service.h"
 
 namespace Core {
@@ -31,7 +32,7 @@ private:
     void CreatePermanentEcPurchasedEventManager(Kernel::HLERequestContext& ctx);
 
     std::vector<u64> add_on_content;
-    std::shared_ptr<Kernel::KEvent> aoc_change_event;
+    Kernel::KEvent aoc_change_event;
 };
 
 /// Registers all AOC services with the specified service manager.

src/core/hle/service/audio/audout_u.cpp

@@ -43,9 +43,9 @@ class IAudioOut final : public ServiceFramework<IAudioOut> {
 public:
     IAudioOut(Core::System& system_, AudoutParams audio_params_, AudioCore::AudioOut& audio_core_,
               std::string&& device_name_, std::string&& unique_name)
-        : ServiceFramework{system_, "IAudioOut"}, audio_core{audio_core_},
-          device_name{std::move(device_name_)}, audio_params{audio_params_}, main_memory{
-                                                                                 system.Memory()} {
+        : ServiceFramework{system_, "IAudioOut"}, audio_core{audio_core_}, device_name{std::move(
+                                                                               device_name_)},
+          audio_params{audio_params_}, buffer_event{system.Kernel()}, main_memory{system.Memory()} {
         // clang-format off
         static const FunctionInfo functions[] = {
             {0, &IAudioOut::GetAudioOutState, "GetAudioOutState"},
@@ -67,13 +67,13 @@ public:
         RegisterHandlers(functions);
 
         // This is the event handle used to check if the audio buffer was released
-        buffer_event = Kernel::KEvent::Create(system.Kernel(), "IAudioOutBufferReleased");
-        buffer_event->Initialize();
+        Kernel::KAutoObject::Create(std::addressof(buffer_event));
+        buffer_event.Initialize("IAudioOutBufferReleased");
 
         stream = audio_core.OpenStream(system.CoreTiming(), audio_params.sample_rate,
                                        audio_params.channel_count, std::move(unique_name), [this] {
                                            const auto guard = LockService();
-                                           buffer_event->GetWritableEvent()->Signal();
+                                           buffer_event.GetWritableEvent().Signal();
                                        });
     }
 
@@ -126,7 +126,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(buffer_event->GetReadableEvent());
+        rb.PushCopyObjects(buffer_event.GetReadableEvent());
     }
 
     void AppendAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
@@ -220,7 +220,7 @@ private:
     [[maybe_unused]] AudoutParams audio_params{};
 
     /// This is the event handle used to check if the audio buffer was released
-    std::shared_ptr<Kernel::KEvent> buffer_event;
+    Kernel::KEvent buffer_event;
     Core::Memory::Memory& main_memory;
 };
 

src/core/hle/service/audio/audren_u.cpp

@@ -30,7 +30,7 @@ public:
     explicit IAudioRenderer(Core::System& system_,
                             const AudioCommon::AudioRendererParameter& audren_params,
                             const std::size_t instance_number)
-        : ServiceFramework{system_, "IAudioRenderer"} {
+        : ServiceFramework{system_, "IAudioRenderer"}, system_event{system.Kernel()} {
         // clang-format off
         static const FunctionInfo functions[] = {
             {0, &IAudioRenderer::GetSampleRate, "GetSampleRate"},
@@ -49,13 +49,13 @@ public:
         // clang-format on
         RegisterHandlers(functions);
 
-        system_event = Kernel::KEvent::Create(system.Kernel(), "IAudioRenderer:SystemEvent");
-        system_event->Initialize();
+        Kernel::KAutoObject::Create(std::addressof(system_event));
+        system_event.Initialize("IAudioRenderer:SystemEvent");
         renderer = std::make_unique<AudioCore::AudioRenderer>(
             system.CoreTiming(), system.Memory(), audren_params,
             [this]() {
                 const auto guard = LockService();
-                system_event->GetWritableEvent()->Signal();
+                system_event.GetWritableEvent().Signal();
             },
             instance_number);
     }
@@ -128,7 +128,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(system_event->GetReadableEvent());
+        rb.PushCopyObjects(system_event.GetReadableEvent());
     }
 
     void SetRenderingTimeLimit(Kernel::HLERequestContext& ctx) {
@@ -162,7 +162,7 @@ private:
         rb.Push(ERR_NOT_SUPPORTED);
     }
 
-    std::shared_ptr<Kernel::KEvent> system_event;
+    Kernel::KEvent system_event;
     std::unique_ptr<AudioCore::AudioRenderer> renderer;
     u32 rendering_time_limit_percent = 100;
 };
@@ -170,7 +170,9 @@ private:
 class IAudioDevice final : public ServiceFramework<IAudioDevice> {
 public:
     explicit IAudioDevice(Core::System& system_, u32_le revision_num)
-        : ServiceFramework{system_, "IAudioDevice"}, revision{revision_num} {
+        : ServiceFramework{system_, "IAudioDevice"}, revision{revision_num},
+          buffer_event{system.Kernel()}, audio_input_device_switch_event{system.Kernel()},
+          audio_output_device_switch_event{system.Kernel()} {
         static const FunctionInfo functions[] = {
             {0, &IAudioDevice::ListAudioDeviceName, "ListAudioDeviceName"},
             {1, &IAudioDevice::SetAudioDeviceOutputVolume, "SetAudioDeviceOutputVolume"},
@@ -188,20 +190,17 @@ public:
         };
         RegisterHandlers(functions);
 
-        auto& kernel = system.Kernel();
-        buffer_event = Kernel::KEvent::Create(kernel, "IAudioOutBufferReleasedEvent");
-        buffer_event->Initialize();
+        Kernel::KAutoObject::Create(std::addressof(buffer_event));
+        buffer_event.Initialize("IAudioOutBufferReleasedEvent");
 
         // Should be similar to audio_output_device_switch_event
-        audio_input_device_switch_event =
-            Kernel::KEvent::Create(kernel, "IAudioDevice:AudioInputDeviceSwitchedEvent");
-        audio_input_device_switch_event->Initialize();
+        Kernel::KAutoObject::Create(std::addressof(audio_input_device_switch_event));
+        audio_input_device_switch_event.Initialize("IAudioDevice:AudioInputDeviceSwitchedEvent");
 
         // Should only be signalled when an audio output device has been changed, example: speaker
         // to headset
-        audio_output_device_switch_event =
-            Kernel::KEvent::Create(kernel, "IAudioDevice:AudioOutputDeviceSwitchedEvent");
-        audio_output_device_switch_event->Initialize();
+        Kernel::KAutoObject::Create(std::addressof(audio_output_device_switch_event));
+        audio_output_device_switch_event.Initialize("IAudioDevice:AudioOutputDeviceSwitchedEvent");
     }
 
 private:
@@ -290,11 +289,11 @@ private:
     void QueryAudioDeviceSystemEvent(Kernel::HLERequestContext& ctx) {
         LOG_WARNING(Service_Audio, "(STUBBED) called");
 
-        buffer_event->GetWritableEvent()->Signal();
+        buffer_event.GetWritableEvent().Signal();
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(buffer_event->GetReadableEvent());
+        rb.PushCopyObjects(buffer_event.GetReadableEvent());
     }
 
     void GetActiveChannelCount(Kernel::HLERequestContext& ctx) {
@@ -311,7 +310,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(audio_input_device_switch_event->GetReadableEvent());
+        rb.PushCopyObjects(audio_input_device_switch_event.GetReadableEvent());
     }
 
     void QueryAudioDeviceOutputEvent(Kernel::HLERequestContext& ctx) {
@@ -319,13 +318,13 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(audio_output_device_switch_event->GetReadableEvent());
+        rb.PushCopyObjects(audio_output_device_switch_event.GetReadableEvent());
     }
 
     u32_le revision = 0;
-    std::shared_ptr<Kernel::KEvent> buffer_event;
-    std::shared_ptr<Kernel::KEvent> audio_input_device_switch_event;
-    std::shared_ptr<Kernel::KEvent> audio_output_device_switch_event;
+    Kernel::KEvent buffer_event;
+    Kernel::KEvent audio_input_device_switch_event;
+    Kernel::KEvent audio_output_device_switch_event;
 
 }; // namespace Audio