1 files changed, 54 insertions, 0 deletions
diff --git a/Runtime/Threads/Winapi/PlatformMutex.cpp b/Runtime/Threads/Winapi/PlatformMutex.cpp
new file mode 100644
index 0000000..3f2bd63
--- /dev/null
+++ b/Runtime/Threads/Winapi/PlatformMutex.cpp
@@ -0,0 +1,54 @@
+#include "UnityPrefix.h"
+
+#if SUPPORT_THREADS
+
+#ifndef MUTEX_API_WINAPI
+#define MUTEX_API_WINAPI (UNITY_WIN || UNITY_XENON || UNITY_WINRT)
+#endif
+
+#endif // SUPPORT_THREADS
+
+#if MUTEX_API_WINAPI
+
+#include "PlatformMutex.h"
+
+// -------------------------------------------------------------------------------------------------
+//  windows
+
+// Note: TryEnterCriticalSection only exists on NT-derived systems.
+// But we do not run on Win9x currently anyway, so just accept it.
+#if !defined _WIN32_WINNT || _WIN32_WINNT < 0x0400
+extern "C" WINBASEAPI BOOL WINAPI TryEnterCriticalSection( IN OUT LPCRITICAL_SECTION lpCriticalSection );
+#endif
+
+PlatformMutex::PlatformMutex()
+{
+#if UNITY_WINRT
+	BOOL const result = InitializeCriticalSectionEx(&crit_sec, 0, CRITICAL_SECTION_NO_DEBUG_INFO);
+	Assert(FALSE != result);
+#else
+	InitializeCriticalSection( &crit_sec );
+#endif
+}
+
+PlatformMutex::~PlatformMutex ()
+{
+	DeleteCriticalSection( &crit_sec );
+}
+
+void PlatformMutex::Lock()
+{
+	EnterCriticalSection( &crit_sec );
+}
+
+void PlatformMutex::Unlock()
+{
+	LeaveCriticalSection( &crit_sec );
+}
+
+bool PlatformMutex::TryLock()
+{
+	return TryEnterCriticalSection( &crit_sec ) ? true : false;
+}
+
+#endif // MUTEX_API_WINAPI