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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2007 Mathias Hasselmann
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* Contributor(s):
* Mathias Hasselmann <mathias.hasselmann@gmx.de>
*/
#include "cairoint.h"
#include "cairo-mutex-private.h"
#define CAIRO_MUTEX_DECLARE(mutex) cairo_mutex_t mutex = CAIRO_MUTEX_NIL_INITIALIZER;
#include "cairo-mutex-list-private.h"
#undef CAIRO_MUTEX_DECLARE
#if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER || _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
#define _CAIRO_MUTEX_UNINITIALIZED 0
#define _CAIRO_MUTEX_INITIALIZING 1
#define _CAIRO_MUTEX_INITIALIZED 2
# if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
# define _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE _CAIRO_MUTEX_UNINITIALIZED
# else
# define _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE _CAIRO_MUTEX_INITIALIZED
# endif
int _cairo_mutex_initialized = _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE;
# undef _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE
#endif
#if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
void _cairo_mutex_initialize (void)
{
#if HAS_ATOMIC_OPS
int old_value;
do {
old_value = _cairo_atomic_int_cmpxchg_return_old (&_cairo_mutex_initialized,
_CAIRO_MUTEX_UNINITIALIZED,
_CAIRO_MUTEX_INITIALIZING);
if (old_value == _CAIRO_MUTEX_INITIALIZED)
return;
} while (old_value == _CAIRO_MUTEX_INITIALIZING);
#else
if (_cairo_mutex_initialized == _CAIRO_MUTEX_INITIALIZED)
return;
_cairo_mutex_initialized = _CAIRO_MUTEX_INITIALIZED;
#endif
#define CAIRO_MUTEX_DECLARE(mutex) CAIRO_MUTEX_INIT (mutex);
#include "cairo-mutex-list-private.h"
#undef CAIRO_MUTEX_DECLARE
#if HAS_ATOMIC_OPS
_cairo_atomic_int_set_relaxed (&_cairo_mutex_initialized, _CAIRO_MUTEX_INITIALIZED);
#endif
}
#endif
#if _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
void _cairo_mutex_finalize (void)
{
#if HAS_ATOMIC_OPS
if (!_cairo_atomic_int_cmpxchg (&_cairo_mutex_initialized,
_CAIRO_MUTEX_INITIALIZED,
_CAIRO_MUTEX_UNINITIALIZED))
return;
#else
if (_cairo_mutex_initialized != _CAIRO_MUTEX_INITIALIZED)
return;
_cairo_mutex_initialized = _CAIRO_MUTEX_UNINITIALIZED;
#endif
#define CAIRO_MUTEX_DECLARE(mutex) CAIRO_MUTEX_FINI (mutex);
#include "cairo-mutex-list-private.h"
#undef CAIRO_MUTEX_DECLARE
}
#endif
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