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/* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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
 * 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):
 *      Chris Wilson <>


#include "cairo-atomic-private.h"

/* Encapsulate operations on the object's reference count */
typedef struct {
    cairo_atomic_int_t ref_count;
} cairo_reference_count_t;

#define _cairo_reference_count_inc(RC) _cairo_atomic_int_inc (&(RC)->ref_count)
#define _cairo_reference_count_dec_and_test(RC) _cairo_atomic_int_dec_and_test (&(RC)->ref_count)


#define CAIRO_REFERENCE_COUNT_GET_VALUE(RC) _cairo_atomic_int_get (&(RC)->ref_count)
#define CAIRO_REFERENCE_COUNT_SET_VALUE(RC, VALUE) _cairo_atomic_int_set (&(RC)->ref_count, (VALUE))

#define CAIRO_REFERENCE_COUNT_INVALID_VALUE ((cairo_atomic_int_t) -1)