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cairo-mutex-type-private.h
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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., 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.
*
* The Initial Developer of the Original Code is University of Southern
* California.
*
* Contributor(s):
* Carl D. Worth <[email protected]>
* Mathias Hasselmann <[email protected]>
* Behdad Esfahbod <[email protected]>
*/
#ifndef CAIRO_MUTEX_TYPE_PRIVATE_H
#define CAIRO_MUTEX_TYPE_PRIVATE_H
#include "cairo-compiler-private.h"
#include "cairo-mutex-impl-private.h"
/* Only the following four are mandatory at this point */
#ifndef CAIRO_MUTEX_IMPL_LOCK
# error "CAIRO_MUTEX_IMPL_LOCK not defined. Check cairo-mutex-impl-private.h."
#endif
#ifndef CAIRO_MUTEX_IMPL_UNLOCK
# error "CAIRO_MUTEX_IMPL_UNLOCK not defined. Check cairo-mutex-impl-private.h."
#endif
#ifndef CAIRO_MUTEX_IMPL_NIL_INITIALIZER
# error "CAIRO_MUTEX_IMPL_NIL_INITIALIZER not defined. Check cairo-mutex-impl-private.h."
#endif
#ifndef CAIRO_RECURSIVE_MUTEX_IMPL_INIT
# error "CAIRO_RECURSIVE_MUTEX_IMPL_INIT not defined. Check cairo-mutex-impl-private.h."
#endif
/* make sure implementations don't fool us: we decide these ourself */
#undef _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
#undef _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
#ifdef CAIRO_MUTEX_IMPL_INIT
/* If %CAIRO_MUTEX_IMPL_INIT is defined, we may need to initialize all
* static mutex'es. */
# ifndef CAIRO_MUTEX_IMPL_INITIALIZE
# define CAIRO_MUTEX_IMPL_INITIALIZE() do { \
if (!_cairo_mutex_initialized) \
_cairo_mutex_initialize (); \
} while(0)
/* and make sure we implement the above */
# define _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER 1
# endif /* CAIRO_MUTEX_IMPL_INITIALIZE */
#else /* no CAIRO_MUTEX_IMPL_INIT */
/* Otherwise we probably don't need to initialize static mutex'es, */
# ifndef CAIRO_MUTEX_IMPL_INITIALIZE
# define CAIRO_MUTEX_IMPL_INITIALIZE() CAIRO_MUTEX_IMPL_NOOP
# endif /* CAIRO_MUTEX_IMPL_INITIALIZE */
/* and dynamic ones can be initialized using the static initializer. */
# define CAIRO_MUTEX_IMPL_INIT(mutex) do { \
cairo_mutex_t _tmp_mutex = CAIRO_MUTEX_IMPL_NIL_INITIALIZER; \
memcpy (&(mutex), &_tmp_mutex, sizeof (_tmp_mutex)); \
} while (0)
#endif /* CAIRO_MUTEX_IMPL_INIT */
#ifdef CAIRO_MUTEX_IMPL_FINI
/* If %CAIRO_MUTEX_IMPL_FINI is defined, we may need to finalize all
* static mutex'es. */
# ifndef CAIRO_MUTEX_IMPL_FINALIZE
# define CAIRO_MUTEX_IMPL_FINALIZE() do { \
if (_cairo_mutex_initialized) \
_cairo_mutex_finalize (); \
} while(0)
/* and make sure we implement the above */
# define _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER 1
# endif /* CAIRO_MUTEX_IMPL_FINALIZE */
#else /* no CAIRO_MUTEX_IMPL_FINI */
/* Otherwise we probably don't need to finalize static mutex'es, */
# ifndef CAIRO_MUTEX_IMPL_FINALIZE
# define CAIRO_MUTEX_IMPL_FINALIZE() CAIRO_MUTEX_IMPL_NOOP
# endif /* CAIRO_MUTEX_IMPL_FINALIZE */
/* neither do the dynamic ones. */
# define CAIRO_MUTEX_IMPL_FINI(mutex) CAIRO_MUTEX_IMPL_NOOP1(mutex)
#endif /* CAIRO_MUTEX_IMPL_FINI */
#ifndef _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
#define _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER 0
#endif
#ifndef _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
#define _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER 0
#endif
/* Make sure everything we want is defined */
#ifndef CAIRO_MUTEX_IMPL_INITIALIZE
# error "CAIRO_MUTEX_IMPL_INITIALIZE not defined"
#endif
#ifndef CAIRO_MUTEX_IMPL_FINALIZE
# error "CAIRO_MUTEX_IMPL_FINALIZE not defined"
#endif
#ifndef CAIRO_MUTEX_IMPL_LOCK
# error "CAIRO_MUTEX_IMPL_LOCK not defined"
#endif
#ifndef CAIRO_MUTEX_IMPL_UNLOCK
# error "CAIRO_MUTEX_IMPL_UNLOCK not defined"
#endif
#ifndef CAIRO_MUTEX_IMPL_INIT
# error "CAIRO_MUTEX_IMPL_INIT not defined"
#endif
#ifndef CAIRO_MUTEX_IMPL_FINI
# error "CAIRO_MUTEX_IMPL_FINI not defined"
#endif
#ifndef CAIRO_MUTEX_IMPL_NIL_INITIALIZER
# error "CAIRO_MUTEX_IMPL_NIL_INITIALIZER not defined"
#endif
/* Public interface. */
/* By default it simply uses the implementation provided.
* But we can provide for debugging features by overriding them */
#ifndef CAIRO_MUTEX_DEBUG
typedef cairo_mutex_impl_t cairo_mutex_t;
typedef cairo_recursive_mutex_impl_t cairo_recursive_mutex_t;
#else
# define cairo_mutex_t cairo_mutex_impl_t
#endif
#define CAIRO_MUTEX_INITIALIZE CAIRO_MUTEX_IMPL_INITIALIZE
#define CAIRO_MUTEX_FINALIZE CAIRO_MUTEX_IMPL_FINALIZE
#define CAIRO_MUTEX_LOCK CAIRO_MUTEX_IMPL_LOCK
#define CAIRO_MUTEX_UNLOCK CAIRO_MUTEX_IMPL_UNLOCK
#define CAIRO_MUTEX_INIT CAIRO_MUTEX_IMPL_INIT
#define CAIRO_MUTEX_FINI CAIRO_MUTEX_IMPL_FINI
#define CAIRO_MUTEX_NIL_INITIALIZER CAIRO_MUTEX_IMPL_NIL_INITIALIZER
#define CAIRO_RECURSIVE_MUTEX_INIT CAIRO_RECURSIVE_MUTEX_IMPL_INIT
#define CAIRO_RECURSIVE_MUTEX_NIL_INITIALIZER CAIRO_RECURSIVE_MUTEX_IMPL_NIL_INITIALIZER
#ifndef CAIRO_MUTEX_IS_LOCKED
# define CAIRO_MUTEX_IS_LOCKED(name) 1
#endif
#ifndef CAIRO_MUTEX_IS_UNLOCKED
# define CAIRO_MUTEX_IS_UNLOCKED(name) 1
#endif
/* Debugging support */
#ifdef CAIRO_MUTEX_DEBUG
/* TODO add mutex debugging facilities here (eg deadlock detection) */
#endif /* CAIRO_MUTEX_DEBUG */
#endif