1 files changed, 126 insertions, 0 deletions
diff --git a/src/gos/gfx_win32.c b/src/gos/gfx_win32.c
new file mode 100644
index 00000000..ffa7fac5
--- /dev/null
+++ b/src/gos/gfx_win32.c
@@ -0,0 +1,126 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file    src/gos/win32.c
+ * @brief   GOS Win32 Operating System support.
+ */
+#include "gfx.h"
+
+#if GFX_USE_OS_WIN32
+
+#include <stdio.h>
+
+static HANDLE	SystemMutex;
+
+void _gosInit(void)
+{
+	/* No initialization of the operating system itself is needed */
+}
+
+void _gosDeinit(void)
+{
+
+}
+
+void gfxHalt(const char *msg) {
+	if (msg)
+		fprintf(stderr, "%s\n", msg);
+
+	ExitProcess(1);
+}
+
+void gfxSleepMicroseconds(delaytime_t ms) {
+    static LARGE_INTEGER pcfreq;
+    static int initflag;
+    LARGE_INTEGER t1, t2, tdiff;
+
+    switch(ms) {
+		case TIME_IMMEDIATE:
+			return;
+
+		case TIME_INFINITE:
+			while(1)
+				Sleep(1000);
+			return;
+	}
+
+    if (!initflag) {
+        QueryPerformanceFrequency(&pcfreq);
+        initflag++;
+    }
+    tdiff.QuadPart = pcfreq.QuadPart * ms / 1000000;
+
+    QueryPerformanceCounter(&t1);
+    do {
+    	QueryPerformanceCounter(&t2);
+    } while (t2.QuadPart - t1.QuadPart < tdiff.QuadPart);
+}
+
+void gfxSystemLock(void) {
+	if (!SystemMutex)
+		SystemMutex = CreateMutex(0, FALSE, 0);
+	WaitForSingleObject(SystemMutex, INFINITE);
+}
+
+void gfxSystemUnlock(void) {
+	ReleaseMutex(SystemMutex);
+}
+
+bool_t gfxSemWait(gfxSem *psem, delaytime_t ms) {
+	return WaitForSingleObject(*psem, ms) == WAIT_OBJECT_0;
+}
+
+typedef LONG __stdcall (*_NtQuerySemaphore)(
+    HANDLE SemaphoreHandle,
+    DWORD SemaphoreInformationClass, /* Would be SEMAPHORE_INFORMATION_CLASS */
+    PVOID SemaphoreInformation,      /* but this is to much to dump here     */
+    ULONG SemaphoreInformationLength,
+    PULONG ReturnLength OPTIONAL
+);
+
+semcount_t gfxSemCounter(gfxSem *pSem) {
+	static _NtQuerySemaphore NtQuerySemaphore;
+	struct _SEMAPHORE_BASIC_INFORMATION {
+	    ULONG CurrentCount;
+	    ULONG MaximumCount;
+	} BasicInfo;
+
+    if (!NtQuerySemaphore)
+    	NtQuerySemaphore = (_NtQuerySemaphore)GetProcAddress(GetModuleHandle("ntdll.dll"), "NtQuerySemaphore");
+
+    NtQuerySemaphore(*pSem, 0, &BasicInfo, sizeof(BasicInfo), 0);
+
+    return BasicInfo.CurrentCount;
+}
+
+gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param) {
+	(void)	stackarea;
+	HANDLE	thd;
+
+	if (!(thd = CreateThread(0, stacksz, fn, param, CREATE_SUSPENDED, 0)))
+		return FALSE;
+
+	SetThreadPriority(thd, prio);
+	ResumeThread(thd);
+
+	return thd;
+}
+
+threadreturn_t gfxThreadWait(gfxThreadHandle thread) {
+	DWORD	ret;
+
+	WaitForSingleObject(thread, INFINITE);
+	GetExitCodeThread(thread, &ret);
+	CloseHandle(thread);
+
+	return ret;
+}
+
+#endif /* GFX_USE_OS_WIN32 */
+/** @} */
+