/* cairo - a vector graphics library with display and print output * * Copyright © 2007 Chris Wilson * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. * * Contributor(s): * Chris Wilson <chris@chris-wilson.co.uk> */ #include "cairoint.h" #include "cairo-atomic-private.h" #include "cairo-mutex-private.h" #ifndef HAS_ATOMIC_OPS void _cairo_atomic_int_inc (int *x) { CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); *x += 1; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); } cairo_bool_t _cairo_atomic_int_dec_and_test (int *x) { cairo_bool_t ret; CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); ret = --*x == 0; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); return ret; } int _cairo_atomic_int_cmpxchg (int *x, int oldv, int newv) { int ret; CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); ret = *x; if (ret == oldv) *x = newv; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); return ret; } #endif #ifdef ATOMIC_OP_NEEDS_MEMORY_BARRIER int _cairo_atomic_int_get (int *x) { int ret; CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); ret = *x; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); return ret; } void _cairo_atomic_int_set (int *x, int value) { CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); *x = value; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); } #endif