/*
 * (C) Copyright 1996-2017 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

#include "eckit/exception/Exceptions.h"
#include "eckit/thread/Mutex.h"



namespace eckit {

//----------------------------------------------------------------------------------------------------------------------

Mutex::Mutex(char tag) :
	exists_(false),
	tag_(tag)
{
	pthread_mutexattr_t attr;
	THRCALL(::pthread_mutexattr_init(&attr));
	THRCALL(::pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE));

	THRCALL(::pthread_mutex_init(&mutex_,&attr));

	exists_ = true;
	THRCALL(::pthread_mutexattr_destroy(&attr));
}

Mutex::~Mutex()
{
	THRCALL(::pthread_mutex_destroy(&mutex_));
}

void Mutex::lock(void)
{
	if(!exists_)
	{
        std::cerr << "Mutex used before being constructed" << std::endl;
        ::abort();
	}
	THRCALL(::pthread_mutex_lock(&mutex_));
}

void Mutex::unlock(void)
{
	if(!exists_)
	{
        std::cerr << "Mutex used before being constructed" << std::endl;
        ::abort();
	}
	THRCALL(::pthread_mutex_unlock(&mutex_));
}

//----------------------------------------------------------------------------------------------------------------------

} // namespace eckit

