/* 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