From 8fcbf4e5d5cc88d52f4e6e67ebead27fc856ff4a Mon Sep 17 00:00:00 2001
From: inmarket <andrewh@inmarket.com.au>
Date: Sun, 26 May 2013 02:06:55 +1000
Subject: More GOS module changes GQUEUE as a seperate module GOS changes
 including basic Win32 O/S support

---
 src/gos/win32.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 80 insertions(+), 1 deletion(-)

(limited to 'src/gos/win32.c')

diff --git a/src/gos/win32.c b/src/gos/win32.c
index 6cf803a2..bda57f6f 100644
--- a/src/gos/win32.c
+++ b/src/gos/win32.c
@@ -26,7 +26,86 @@
 
 #if GFX_USE_OS_WIN32
 
-#error "GOS: WIN32 not supported yet"
+#include <stdio.h>
+
+static HANDLE	SystemMutex;
+
+void _gosInit(void) {
+}
+
+void gfxHalt(const char *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(NULL, FALSE, NULL);
+	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), NULL);
+    return BasicInfo.CurrentCount;
+}
+
+bool_t gfxCreateThread(void *stackarea, size_t stacksz, threadpriority_t prio, gfxThreadFunction fn, void *param) {
+	(void) stackarea;
+	HANDLE	thd;
+
+	if (!(thd = CreateThread(NULL, stacksz, fn, param, CREATE_SUSPENDED, NULL)))
+		return FALSE;
+	SetThreadPriority(thd, prio);
+	ResumeThread(thd);
+	return TRUE;
+}
 
 #endif /* GFX_USE_OS_WIN32 */
 /** @} */
-- 
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