hle: kernel: Migrate KSession, KClientSession, and KServerSession to KAutoObject.

src/core/hle/kernel/k_session.h

@@ -0,0 +1,108 @@
+// 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);
+
+private:
+    enum class State : u8 {
+        Invalid = 0,
+        Normal = 1,
+        ClientClosed = 2,
+        ServerClosed = 3,
+    };
+
+public:
+    explicit KSession(KernelCore& kernel);
+    virtual ~KSession() override;
+
+    void Initialize(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 ClientPort* GetParent() const {
+        return port;
+    }
+
+    // DEPRECATED
+
+    std::string GetName() const override {
+        return name;
+    }
+
+    static constexpr HandleType HANDLE_TYPE = HandleType::Session;
+    HandleType GetHandleType() const override {
+        return HANDLE_TYPE;
+    }
+
+private:
+    void SetState(State state) {
+        atomic_state = static_cast<u8>(state);
+    }
+
+    State GetState() const {
+        return static_cast<State>(atomic_state.load());
+    }
+
+private:
+    KServerSession server;
+    KClientSession client;
+    std::atomic<std::underlying_type<State>::type> atomic_state{
+        static_cast<std::underlying_type<State>::type>(State::Invalid)};
+    ClientPort* port{};
+    std::string name;
+    Process* process{};
+    bool initialized{};
+};
+
+} // namespace Kernel