renderdoc/renderdoc/common/threading.h

/******************************************************************************
 * 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
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 * 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() const
		{
			return m_Owned;
		}

	private:
		CriticalSection *m_CS;
		bool m_Owned;
};

};

#define SCOPED_LOCK(cs) Threading::ScopedLock CONCAT(scopedlock, __LINE__)(cs);