/******************************************************************************
 * Project:  PROJ.4
 * Purpose:  Mutex (thread lock) functions.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 2009, Frank Warmerdam
 *
 * 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
 * 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.
 *****************************************************************************/

#include <mutex>

#include "proj.h"
#include "proj_internal.h"

static std::recursive_mutex core_lock;

/************************************************************************/
/*                          pj_acquire_lock()                           */
/*                                                                      */
/*      Acquire the PROJ.4 lock.                                        */
/************************************************************************/

void pj_acquire_lock() { core_lock.lock(); }

/************************************************************************/
/*                          pj_release_lock()                           */
/*                                                                      */
/*      Release the PROJ.4 lock.                                        */
/************************************************************************/

void pj_release_lock() { core_lock.unlock(); }
