GEEKING

RobloxStudio/FunctionMarshaller.h

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+/**
+ * FunctionMarshaller.h
+ * Copyright (c) 2013 ROBLOX Corp. All Rights Reserved.
+ */
+
+#pragma once
+
+// Standard C/C++ Headers
+#include <map>
+
+// Roblox Headers
+#include "rbx/threadsafe.h"
+
+namespace RBX { 
+
+class CEvent;
+
+// A very handy class for marshaling a function across Windows threads (sync and async)
+class FunctionMarshaller
+{
+public:
+
+private:
+	struct StaticData
+	{
+		std::map<DWORD, FunctionMarshaller*> windows;
+		boost::recursive_mutex windowsCriticalSection;	// TODO: Would non-recursive be safe here?
+		~StaticData();
+	};
+	SAFE_STATIC(StaticData, staticData)
+
+	int refCount;
+	DWORD threadID;
+	FunctionMarshaller(DWORD threadID);
+	~FunctionMarshaller();
+
+public:
+	// TODO: Wrap with a reference counter and then remove ~StaticData() cleanup code and remove ReleaseWindow()
+	static FunctionMarshaller* GetWindow();
+	static void ReleaseWindow(FunctionMarshaller* window);
+	
+	static void handleAppEvent(void *pClosure);
+	static void freeAppEvent(void *pClosure);
+	
+	struct Closure
+	{
+		boost::function<void()>* f;
+		std::string errorMessage;
+		RBX::CEvent *waitEvent;
+	};
+
+	void Execute(boost::function<void()> job, CEvent *waitEvent);
+	void Submit(boost::function<void()> job);
+
+	// Call this only from the Window's thread
+	void ProcessMessages() {};
+};
+
+
+}