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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_OSL_INTERLCK_H
#define INCLUDED_OSL_INTERLCK_H
#include <sal/config.h>
#include <sal/saldllapi.h>
#include <sal/types.h>
#if defined(_WIN32)
#include <intrin.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef sal_Int32 oslInterlockedCount;
/** Increments the count variable addressed by pCount.
@param pCount Address of count variable
@return The adjusted value of the count variable.
*/
SAL_DLLPUBLIC oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount);
/** Decrement the count variable addressed by pCount.
@param pCount Address of count variable
@return The adjusted value of the count variable.
*/
SAL_DLLPUBLIC oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount);
/// @cond INTERNAL
/** Increments the count variable addressed by p.
@attention This functionality should only be used internally within
LibreOffice.
@param p Address of count variable
@return The adjusted value of the count variable.
@since LibreOffice 4.0
*/
#if HAVE_GCC_BUILTIN_ATOMIC
# define osl_atomic_increment(p) __sync_add_and_fetch((p), 1)
#elif defined WNT
# define osl_atomic_increment(p) _InterlockedIncrement(p)
#else
# define osl_atomic_increment(p) osl_incrementInterlockedCount((p))
#endif
/** Decrement the count variable addressed by p.
@attention This functionality should only be used internally within
LibreOffice.
@param p Address of count variable
@return The adjusted value of the count variable.
@since LibreOffice 4.0
*/
#if HAVE_GCC_BUILTIN_ATOMIC
# define osl_atomic_decrement(p) __sync_sub_and_fetch((p), 1)
#elif defined WNT
# define osl_atomic_decrement(p) _InterlockedDecrement(p)
#else
# define osl_atomic_decrement(p) osl_decrementInterlockedCount((p))
#endif
/// @endcond
#ifdef __cplusplus
}
#endif
#endif // INCLUDED_OSL_INTERLCK_H
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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