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/*
* Copyright © 2007 Chris Wilson
* Copyright © 2009,2010 Red Hat, Inc.
* Copyright © 2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Contributor(s):
* Chris Wilson <chris@chris-wilson.co.uk>
* Red Hat Author(s): Behdad Esfahbod
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_ATOMIC_PRIVATE_HH
#define HB_ATOMIC_PRIVATE_HH
#include "hb-private.hh"
/* atomic_int */
/* We need external help for these */
#if 0
#elif !defined(HB_NO_MT) && defined(_MSC_VER) && _MSC_VER >= 1600
#include <intrin.h>
typedef long hb_atomic_int_t;
#define hb_atomic_int_add(AI, V) _InterlockedExchangeAdd (&(AI), (V))
#elif !defined(HB_NO_MT) && defined(__APPLE__)
#include <libkern/OSAtomic.h>
typedef int32_t hb_atomic_int_t;
#define hb_atomic_int_add(AI, V) (OSAtomicAdd32Barrier ((V), &(AI)) - (V))
#elif !defined(HB_NO_MT) && defined(HAVE_GLIB)
#include <glib.h>
typedef volatile int hb_atomic_int_t;
#if GLIB_CHECK_VERSION(2,29,5)
#define hb_atomic_int_add(AI, V) g_atomic_int_add (&(AI), (V))
#else
#define hb_atomic_int_add(AI, V) g_atomic_int_exchange_and_add (&(AI), (V))
#endif
#else
#define HB_ATOMIC_INT_NIL 1
typedef volatile int hb_atomic_int_t;
#define hb_atomic_int_add(AI, V) (((AI) += (V)) - (V))
#endif
#endif /* HB_ATOMIC_PRIVATE_HH */
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