Initial commit of existing code.

* All renderdoc code up to this point was written by me, history is available by request

renderdoc/common/threading.h

@@ -0,0 +1,67 @@
+/******************************************************************************
+ * The MIT License (MIT)
+ * 
+ * Copyright (c) 2014 Crytek
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ ******************************************************************************/
+
+
+#pragma once
+
+#include "os/os_specific.h"
+
+namespace Threading
+{
+
+class ScopedLock
+{
+	public:
+		ScopedLock(CriticalSection &cs)
+			: m_CS(&cs)
+		{ m_CS->Lock(); }
+		~ScopedLock()
+		{ m_CS->Unlock(); }
+
+	private:
+		CriticalSection *m_CS;
+};
+
+class TryScopedLock
+{
+	public:
+		TryScopedLock(CriticalSection &cs)
+			: m_CS(&cs)
+		{ m_Owned = m_CS->Trylock(); }
+		~TryScopedLock()
+		{ if(m_Owned) m_CS->Unlock(); }
+
+		bool HasLock()
+		{
+			return m_Owned;
+		}
+
+	private:
+		CriticalSection *m_CS;
+		bool m_Owned;
+};
+
+};
+
+#define SCOPED_LOCK(cs) Threading::ScopedLock CONCAT(scopedlock, __LINE__)(cs);