Kernel/IPC: Use Ports and Sessions as the fundamental building block of Inter Process Communication.

All handles obtained via srv::GetServiceHandle or svcConnectToPort are references to ClientSessions.
Service modules will wait on the counterpart of those ClientSessions (Called ServerSessions) using svcReplyAndReceive or svcWaitSynchronization[1|N], and will be awoken when a SyncRequest is performed.

HLE Interfaces are now ClientPorts which override the HandleSyncRequest virtual member function to perform command handling immediately.

1 files changed, 50 insertions, 0 deletions

diff --git a/src/core/hle/kernel/client_session.h b/src/core/hle/kernel/client_session.h
new file mode 100644
index 000000000..4fe9b4517
--- /dev/null
+++ b/src/core/hle/kernel/client_session.h
@@ -0,0 +1,50 @@
+// 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/kernel.h"
+
+namespace Kernel {
+
+class ClientPort;
+class ServerSession;
+
+class ClientSession final : public Object {
+public:
+    /**
+     * Creates a client session.
+     * @param server_session The server session associated with this client session
+     * @param client_port The client port which this session is connected to
+     * @param name Optional name of client session
+     * @return The created client session
+     */
+    static ResultVal<SharedPtr<ClientSession>> Create(SharedPtr<ServerSession> server_session, SharedPtr<ClientPort> client_port, std::string name = "Unknown");
+
+    std::string GetTypeName() const override { return "ClientSession"; }
+    std::string GetName() const override { return name; }
+
+    static const HandleType HANDLE_TYPE = HandleType::ClientSession;
+    HandleType GetHandleType() const override { return HANDLE_TYPE; }
+
+    /**
+     * Handle a SyncRequest from the emulated application.
+     * @return ResultCode of the operation.
+     */
+    ResultCode HandleSyncRequest();
+
+    std::string name;                           ///< Name of client port (optional)
+    SharedPtr<ServerSession> server_session;    ///< The server session associated with this client session.
+    SharedPtr<ClientPort> client_port;          ///< The client port which this session is connected to.
+
+private:
+    ClientSession();
+    ~ClientSession() override;
+};
+
+} // namespace