brought back functionality from previous builds but now cross-platform

tier0/platform.cpp

@@ -24,7 +24,11 @@ PLATFORM_INTERFACE void Plat_FatalErrorFunc(const char* szFormat, ...)
 	V_vprintf(szFormat, list);
 	va_end(list);
 	fflush(stdout);
+#ifdef __WIN32__
+	__debugbreak();
+#else
 	raise(SIGTRAP);
+#endif
 	Plat_Exit(1);
 }
 
@@ -200,11 +204,29 @@ PLATFORM_INTERFACE void Plat_UnloadLibrary( void *lib )
 
 PLATFORM_INTERFACE double Plat_GetTime( void )
 {
+#ifndef __WIN32__
 	struct timespec tp;
 	clock_gettime(CLOCK_MONOTONIC, &tp);
 	static time_t s_starttime = tp.tv_sec;
 
 	return (tp.tv_sec-s_starttime)+tp.tv_nsec/1e9;
+#else
+	static LARGE_INTEGER s_startcount;
+	static LARGE_INTEGER s_frequency;
+	static int s_initialized = 0;
+
+	LARGE_INTEGER tp;
+
+	if (!s_initialized) {
+		QueryPerformanceFrequency(&s_frequency);
+		QueryPerformanceCounter(&s_startcount);
+		s_initialized = 1;
+	}
+
+	QueryPerformanceCounter(&tp);
+
+	return (double)(tp.QuadPart - s_startcount.QuadPart) / s_frequency.QuadPart;
+#endif
 }
 
 PLATFORM_INTERFACE void Plat_Exit( int status )
@@ -215,4 +237,7 @@ PLATFORM_INTERFACE void Plat_Exit( int status )
 #ifdef __APPLE__
 	_exit(status);
 #endif
+#ifdef __WIN32__
+	_exit(status);
+#endif
 };