| /* 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 |