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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 

 *	Mathias Hasselmann 

 *	Behdad Esfahbod 

 */

#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