/*
 * Copyright © 2014 Intel Corporation
 *
 * 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, sub license, 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 (including the
 * next paragraph) 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 NON-INFRINGEMENT.
 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
 *
 * Authors:
 *     Wei Lin<wei.w.lin@intel.com>
 *     Yuting Yang<yuting.yang@intel.com>
 *     Lina Sun<lina.sun@intel.com>
 */

#ifndef __CM_SYNC_H__
#define __CM_SYNC_H__

class CSync {
 public:
	CSync() {
		INT ret = 0;
		 ret = pthread_mutex_init(&m_CriticalSection, NULL);
		if (ret != 0) {
			CM_ASSERTMESSAGE("Failed in pthread_mutex_init.");
		}
	} ~CSync() {
		INT ret = 0;
		ret = pthread_mutex_destroy(&m_CriticalSection);
		if (ret != 0) {
			CM_ASSERTMESSAGE("Failed in pthread_mutex_destroy.");
		}
	}

	void Acquire() {
		INT ret = 0;
		ret = pthread_mutex_lock(&m_CriticalSection);
		if (ret != 0) {
			CM_ASSERTMESSAGE("Failed in pthread_mutex_lock.");
		}
	}

	void Release() {
		INT ret = 0;
		ret = pthread_mutex_unlock(&m_CriticalSection);
		if (ret != 0) {
			CM_ASSERTMESSAGE("Failed in pthread_mutex_unlock.");
		}
	}

 private:
	pthread_mutex_t m_CriticalSection;
};

class CLock {
 public:
	CLock(CSync & refSync):m_refSync(refSync) {
		Lock();
	} ~CLock() {
		Unlock();
	}

 private:
	CSync & m_refSync;

	CLock(const CLock & refcSource);
	CLock & operator=(const CLock & refcSource);
	void Lock() {
		m_refSync.Acquire();
	}
	void Unlock() {
		m_refSync.Release();
	}
};
#endif
