Added Semaphore and Mutex

GlitchyEngine/src/Platform/Windows/Threading/WindowsSemaphore.bf

@@ -0,0 +1,55 @@
+#if BF_PLATFORM_WINDOWS
+
+using static System.Windows;
+
+namespace GlitchyEngine.Threading
+{
+	extension Semaphore
+	{
+		internal Handle nativeHandle;
+
+		public override this(int32 initialCount = 1, int32 maximumCount = 1)
+		{
+			nativeHandle = (.)CreateSemaphoreW(null, initialCount, maximumCount, null);
+			
+			Log.EngineLogger.AssertDebug(nativeHandle != 0, scope $"Failed to create semaphore. Error code: {GetLastError()}");
+		}
+
+		public ~this()
+		{
+			CloseHandle(nativeHandle);
+		}
+
+		public override LockResult Lock(uint32 timeout = InfiniteTimeout)
+		{
+			int i = WaitForSingleObject(nativeHandle, timeout);
+
+			switch(i)
+			{
+			case 0x00000000L:
+				return .Released;
+			case 0x00000080L:
+				return .Abandoned;
+			case 0x00000102L:
+				return .Timeout;
+			case 0xFFFFFFFF:
+				return .Failed;
+			default:
+				return .Unknown;
+			}
+		}
+
+		public bool Unlock(int32 releaseCount = 1)
+		{
+			return ReleaseSemaphore(nativeHandle, releaseCount, null);
+		}
+
+		public bool Unlock(out int32 previousCount, int32 releaseCount = 1)
+		{
+			previousCount = ?;
+			return ReleaseSemaphore(nativeHandle, releaseCount, &previousCount);
+		}
+	}
+}
+
+#endif