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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 <cworth@cworth.org>
+ * Mathias Hasselmann <mathias.hasselmann@gmx.de>
+ * Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#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