Lots of stuff

GpD3D/GpFiberStarter_Win32.cpp

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+#include "GpFiberStarter.h"
+#include "GpFiber_Win32.h"
+#include "GpWindows.h"
+
+#include <assert.h>
+
+namespace GpFiberStarter_Win32
+{
+	struct FiberStartState
+	{
+		GpFiberStarter::ThreadFunc_t m_threadFunc;
+		GpFiber *m_creatingFiber;
+		void *m_context;
+	};
+
+	static VOID WINAPI FiberStartRoutine(LPVOID lpThreadParameter)
+	{
+		const FiberStartState *tss = static_cast<const FiberStartState*>(lpThreadParameter);
+
+		GpFiberStarter::ThreadFunc_t threadFunc = tss->m_threadFunc;
+		GpFiber *creatingFiber = tss->m_creatingFiber;
+		void *context = tss->m_context;
+		creatingFiber->YieldTo();
+
+		threadFunc(context);
+
+		assert(!"Fiber function exited");
+	}
+}
+
+GpFiber *GpFiberStarter::StartFiber(ThreadFunc_t threadFunc, void *context, GpFiber *creatingFiber)
+{
+	ULONG_PTR lowLimit;
+	ULONG_PTR highLimit;
+
+	GetCurrentThreadStackLimits(&lowLimit, &highLimit);
+
+	ULONG_PTR stackSize = highLimit - lowLimit;
+
+	GpFiberStarter_Win32::FiberStartState startState;
+	startState.m_context = context;
+	startState.m_creatingFiber = creatingFiber;
+	startState.m_threadFunc = threadFunc;
+
+	void *fiber = CreateFiber(static_cast<SIZE_T>(stackSize), GpFiberStarter_Win32::FiberStartRoutine, &startState);
+	if (!fiber)
+		return nullptr;
+
+	SwitchToFiber(fiber);
+
+	return new GpFiber_Win32(fiber);
+}