suyu/src/core/hle/kernel/client_port.h

// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

#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:
    friend class ServerPort;
    std::string GetTypeName() const override {
        return "ClientPort";
    }
    std::string GetName() const override {
        return name;
    }

    static const HandleType HANDLE_TYPE = HandleType::ClientPort;
    HandleType GetHandleType() const override {
        return HANDLE_TYPE;
    }

    SharedPtr<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<SharedPtr<ClientSession>> Connect();

    /**
     * Signifies that a previously active connection has been closed,
     * decreasing the total number of active connections to this port.
     */
    void ConnectionClosed();

private:
    explicit ClientPort(KernelCore& kernel);
    ~ClientPort() override;

    SharedPtr<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