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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2002 University of Southern California
* Copyright © 2005,2007 Red Hat, Inc.
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
*
* The Initial Developer of the Original Code is University of Southern
* California.
*
* Contributor(s):
* Carl D. Worth <cworth@cworth.org>
* Mathias Hasselmann <mathias.hasselmann@gmx.de>
* Behdad Esfahbod <behdad@behdad.org>
*/
#ifndef CAIRO_MUTEX_PRIVATE_H
#define CAIRO_MUTEX_PRIVATE_H
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <cairo-features.h>
CAIRO_BEGIN_DECLS
/* A fully qualified no-operation statement */
#define CAIRO_MUTEX_NOOP do {/*no-op*/} while (0)
#if CAIRO_NO_MUTEX
/* A poor man's mutex */
typedef int cairo_mutex_t;
# define CAIRO_MUTEX_INITIALIZE() CAIRO_MUTEX_NOOP
# define CAIRO_MUTEX_LOCK(name) do { while (name) ; (name) = 1; } while (0)
# define CAIRO_MUTEX_UNLOCK(name) (name) = 0
# define CAIRO_MUTEX_NIL_INITIALIZER 0
#elif HAVE_PTHREAD_H /*******************************************************/
# include <pthread.h>
typedef pthread_mutex_t cairo_mutex_t;
# define CAIRO_MUTEX_INITIALIZE() CAIRO_MUTEX_NOOP
# define CAIRO_MUTEX_LOCK(name) pthread_mutex_lock (&(name))
# define CAIRO_MUTEX_UNLOCK(name) pthread_mutex_unlock (&(name))
# define CAIRO_MUTEX_FINI(mutex) pthread_mutex_destroy (mutex)
# define CAIRO_MUTEX_NIL_INITIALIZER PTHREAD_MUTEX_INITIALIZER
#elif HAVE_WINDOWS_H /*******************************************************/
# include <windows.h>
typedef CRITICAL_SECTION cairo_mutex_t;
# define CAIRO_MUTEX_LOCK(name) EnterCriticalSection (&(name))
# define CAIRO_MUTEX_UNLOCK(name) LeaveCriticalSection (&(name))
# define CAIRO_MUTEX_INIT(mutex) InitializeCriticalSection (mutex)
# define CAIRO_MUTEX_FINI(mutex) DeleteCriticalSection (mutex)
# define CAIRO_MUTEX_NIL_INITIALIZER { NULL, 0, 0, NULL, NULL, 0 }
#elif defined __OS2__ /******************************************************/
# define INCL_BASE
# define INCL_PM
# include <os2.h>
typedef HMTX cairo_mutex_t;
# define CAIRO_MUTEX_LOCK(name) DosRequestMutexSem(name, SEM_INDEFINITE_WAIT)
# define CAIRO_MUTEX_UNLOCK(name) DosReleaseMutexSem(name)
# define CAIRO_MUTEX_INIT(mutex) DosCreateMutexSem (NULL, mutex, 0L, FALSE)
# define CAIRO_MUTEX_FINI(mutex) do { \
if (0 != (mutex)) { \
DosCloseMutexSem (*(mutex)); \
(*(mutex)) = 0; \
} \
} while (0)
# define CAIRO_MUTEX_NIL_INITIALIZER 0
#elif CAIRO_HAS_BEOS_SURFACE /***********************************************/
typedef BLocker* cairo_mutex_t;
# define CAIRO_MUTEX_LOCK(name) (name)->Lock()
# define CAIRO_MUTEX_UNLOCK(name) (name)->Unlock()
# define CAIRO_MUTEX_INIT(mutex) (*(mutex)) = new BLocker()
# define CAIRO_MUTEX_FINI(mutex) delete (*(mutex))
# define CAIRO_MUTEX_NIL_INITIALIZER NULL
#else /**********************************************************************/
# error "XXX: No mutex implementation found. Define CAIRO_NO_MUTEX to 1" \
" to compile cairo without thread-safety support."
#endif
#ifndef CAIRO_MUTEX_DECLARE
#define CAIRO_MUTEX_DECLARE(name) extern cairo_mutex_t name;
#endif
#include "cairo-mutex-list-private.h"
#undef CAIRO_MUTEX_DECLARE
#ifndef CAIRO_MUTEX_INIT
# define CAIRO_MUTEX_INIT(_mutex) do { \
cairo_mutex_t _tmp_mutex = CAIRO_MUTEX_NIL_INITIALIZER; \
memcpy ((_mutex), &_tmp_mutex, sizeof (_tmp_mutex)); \
} while (0)
#endif
#ifndef CAIRO_MUTEX_FINI
# define CAIRO_MUTEX_FINI(mutex) CAIRO_MUTEX_NOOP
#endif
#ifndef CAIRO_MUTEX_INITIALIZE
# define CAIRO_MUTEX_USE_GENERIC_INITIALIZATION 1
#else
# undef CAIRO_MUTEX_USE_GENERIC_INITIALIZATION
# ifndef CAIRO_MUTEX_FINALIZE
# define CAIRO_MUTEX_FINALIZE() CAIRO_MUTEX_NOOP
# endif
#endif
#if CAIRO_MUTEX_USE_GENERIC_INITIALIZATION
#define CAIRO_MUTEX_INITIALIZE() do { \
if (!_cairo_mutex_initialized) \
_cairo_mutex_initialize (); \
} while(0)
#define CAIRO_MUTEX_FINALIZE() do { \
if (_cairo_mutex_initialized) \
_cairo_mutex_finalize (); \
} while(0)
cairo_private extern cairo_bool_t _cairo_mutex_initialized;
cairo_private void _cairo_mutex_initialize(void);
cairo_private void _cairo_mutex_finalize(void);
#endif
CAIRO_END_DECLS
/* Make sure everything we want is defined */
#ifndef CAIRO_MUTEX_INITIALIZE
# error "CAIRO_MUTEX_INITIALIZE not defined"
#endif
#ifndef CAIRO_MUTEX_FINALIZE
# error "CAIRO_MUTEX_FINALIZE not defined"
#endif
#ifndef CAIRO_MUTEX_LOCK
# error "CAIRO_MUTEX_LOCK not defined"
#endif
#ifndef CAIRO_MUTEX_UNLOCK
# error "CAIRO_MUTEX_UNLOCK not defined"
#endif
#ifndef CAIRO_MUTEX_INIT
# error "CAIRO_MUTEX_INIT not defined"
#endif
#ifndef CAIRO_MUTEX_FINI
# error "CAIRO_MUTEX_FINI not defined"
#endif
#ifndef CAIRO_MUTEX_NIL_INITIALIZER
# error "CAIRO_MUTEX_NIL_INITIALIZER not defined"
#endif
#endif
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