non/util/Mutex.H

82 lines
2.2 KiB
C++

/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* This program is free software; you can redistribute it and/or modify it */
/* under the terms of the GNU General Public License as published by the */
/* Free Software Foundation; either version 2 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 General Public License for */
/* more details. */
/* */
/* You should have received a copy of the GNU General Public License along */
/* with This program; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#pragma once
#include <pthread.h>
const pthread_mutex_t _mutex_initializer = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
class Mutex
{
pthread_mutex_t _lock;
public:
Mutex ( )
{
// pthread_mutex_init( &_lock, NULL );
_lock = _mutex_initializer;
}
virtual ~Mutex ( )
{
pthread_mutex_destroy( &_lock );
}
void
lock ( void )
{
pthread_mutex_lock( &_lock );
}
void
unlock ( void )
{
pthread_mutex_unlock( &_lock );
}
bool
trylock ( void )
{
return pthread_mutex_trylock( &_lock ) == 0;
}
};
class Locker
{
Mutex &_lock;
public:
Locker ( Mutex & lock ) : _lock( lock )
{
_lock.lock();
}
~Locker ( )
{
_lock.unlock();
}
};