Update utility.h

Author: rasikhq

VCMP-LUA/include/utility.h

@@ -23,10 +23,37 @@ namespace std {
 
 }
 
+#if defined(_WIN32) || defined(WIN32)
+static inline LARGE_INTEGER GetFrequency()
+{
+    LARGE_INTEGER frequency;
+    QueryPerformanceFrequency(&frequency);
+    return frequency;
+}
+
+static uint32_t GetCurrentSysTime()
+{
+    HANDLE current_thread = GetCurrentThread();
+    DWORD_PTR previous_mask = SetThreadAffinityMask(current_thread, 1);
+
+    static const LARGE_INTEGER frequency = GetFrequency();
+
+    // Get the current time
+    LARGE_INTEGER time;
+    QueryPerformanceCounter(&time);
+
+    // Restore the thread affinity
+    SetThreadAffinityMask(current_thread, previous_mask);
+
+    // Return the current time as miliseconds
+    return static_cast<uint32_t>(1000000LL * time.QuadPart / frequency.QuadPart);
+}
+#else
 static uint32_t GetCurrentSysTime()
 {
     // POSIX implementation
     timespec time;
     clock_gettime(CLOCK_MONOTONIC, &time);
     return static_cast<uint32_t>(uint64_t(time.tv_sec) * 1000000 + time.tv_nsec / 1000);
-}
+}
+#endif