/*
	PIP - Platform Independent Primitives
	Mutex
	Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/** \class PIMutex
 * \brief Mutex
 * \details 
 * \section PIMutex_sec0 Synopsis
 * %PIMutex provides synchronization blocks between several threads.
 * Using mutex guarantees execution of some code only one of threads.
 * Mutex contains logic state and functions to change it: \a lock(),
 * \a unlock() and \a tryLock().
 * 
 * \section PIMutex_sec1 Usage
 * Block of code that should to be executed only one thread simultaniously
 * should to be started with \a lock() and ended with \a unlock().
 * \snippet pimutex.cpp main
 * "mutex" in this example is one for all threads.
 * 
 * */

//#include "pimutex.h"
//#include "piincludes_p.h"
//#ifdef BLACKBERRY
//#  include <pthread.h>
//#endif


//PRIVATE_DEFINITION_START(PIMutex)
//#ifdef WINDOWS
//	HANDLE
//#else
//	pthread_mutex_t
//#endif
//		mutex;
//PRIVATE_DEFINITION_END(PIMutex)


//PIMutex::PIMutex(): inited_(false) {
//	//printf("new Mutex %p\n", this);
//#ifdef WINDOWS
//	PRIVATE->mutex = 0;
//#endif
//	init();
//}


//PIMutex::~PIMutex() {
//	//printf("del Mutex %p\n", this);
//	destroy();
//}


//void PIMutex::lock() {
//#ifdef WINDOWS
////	std::cout << (ullong)PRIVATE->mutex << "locking..." << std::endl;
////	DWORD wr =
//			WaitForSingleObject(PRIVATE->mutex, INFINITE);
////	std::cout << (ullong)PRIVATE->mutex << " lock wr=" << wr << std::endl;
//#else
//	pthread_mutex_lock(&(PRIVATE->mutex));
//#endif
//}


//void PIMutex::unlock() {
//#ifdef WINDOWS
////	BOOL wr =
////			ReleaseMutex(PRIVATE->mutex);
//			SetEvent(PRIVATE->mutex);
////	std::cout << (ullong)PRIVATE->mutex << " unlock wr=" << wr << std::endl;
//#else
//	pthread_mutex_unlock(&(PRIVATE->mutex));
//#endif
//}


//bool PIMutex::tryLock() {
//	bool ret =
//#ifdef WINDOWS
//			(WaitForSingleObject(PRIVATE->mutex, 0) == WAIT_OBJECT_0);
//#else
//			(pthread_mutex_trylock(&(PRIVATE->mutex)) == 0);
//#endif
//	return ret;
//}


//void PIMutex::init() {
//	if (inited_) destroy();
//#ifdef WINDOWS
//	PRIVATE->mutex = CreateEvent(NULL, FALSE, TRUE, NULL);
////	std::cout << "create " << (ullong)PRIVATE->mutex << std::endl;
//#else
//	pthread_mutexattr_t attr;
//	memset(&attr, 0, sizeof(attr));
//	pthread_mutexattr_init(&attr);
//	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
//	memset(&(PRIVATE->mutex), 0, sizeof(PRIVATE->mutex));
//	pthread_mutex_init(&(PRIVATE->mutex), &attr);
//	pthread_mutexattr_destroy(&attr);
//#endif
//	inited_ = true;
//}


//void PIMutex::destroy() {
//	if (inited_) {
//#ifdef WINDOWS
////		std::cout << "destroy " << (ullong)PRIVATE->mutex << std::endl;
//		if (PRIVATE->mutex) CloseHandle(PRIVATE->mutex);
//		PRIVATE->mutex = 0;
//#else
//		pthread_mutex_destroy(&(PRIVATE->mutex));
//#endif
//	}
//	inited_ = false;
//}