/* 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 , 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 ) :
* Chris Wilson < chris @ chris - wilson . co . uk >
*/
#ifndef CAIRO_REFRENCE_COUNT_PRIVATE_H
#define CAIRO_REFRENCE_COUNT_PRIVATE_H
#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(RC) _cairo_atomic_int_dec (&(RC)->ref_count)
#define _cairo_reference_count_dec_and_test(RC) _cairo_atomic_int_dec_and_test (&(RC)->ref_count)
#define CAIRO_REFERENCE_COUNT_INIT(RC, VALUE) ((RC)->ref_count = (VALUE))
#define CAIRO_REFERENCE_COUNT_GET_VALUE(RC) _cairo_atomic_int_get (&(RC)->ref_count)
#define CAIRO_REFERENCE_COUNT_INVALID_VALUE ((cairo_atomic_int_t) -1 )
#define CAIRO_REFERENCE_COUNT_INVALID {CAIRO_REFERENCE_COUNT_INVALID_VALUE}
#define CAIRO_REFERENCE_COUNT_IS_INVALID(RC) (CAIRO_REFERENCE_COUNT_GET_VALUE (RC) == CAIRO_REFERENCE_COUNT_INVALID_VALUE)
#define CAIRO_REFERENCE_COUNT_HAS_REFERENCE(RC) (CAIRO_REFERENCE_COUNT_GET_VALUE (RC) > 0 )
#endif
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