1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#ifndef INCLUDED_OSL_INTERLCK_H
21#define INCLUDED_OSL_INTERLCK_H
22
23#include <sal/config.h>
24
25#include <sal/saldllapi.h>
26#include <sal/types.h>
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32typedef sal_Int32 oslInterlockedCount;
33
34/** Increments the count variable addressed by pCount.
35 @param pCount Address of count variable
36 @return The adjusted value of the count variable.
37*/
38SAL_DLLPUBLIC oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount);
39
40/** Decrement the count variable addressed by pCount.
41 @param pCount Address of count variable
42 @return The adjusted value of the count variable.
43*/
44SAL_DLLPUBLIC oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount);
45
46
47/// @cond INTERNAL
48
49/** Increments the count variable addressed by p.
50
51 @attention This functionality should only be used internally within
52 LibreOffice.
53
54 @param p Address of count variable
55 @return The adjusted value of the count variable.
56
57 @since LibreOffice 4.0
58*/
59#if HAVE_GCC_BUILTIN_ATOMIC
60# define osl_atomic_increment(p) __sync_add_and_fetch((p), 1)
61#else
62# define osl_atomic_increment(p) osl_incrementInterlockedCount((p))
63#endif
64
65
66/** Decrement the count variable addressed by p.
67
68 @attention This functionality should only be used internally within
69 LibreOffice.
70
71 @param p Address of count variable
72 @return The adjusted value of the count variable.
73
74 @since LibreOffice 4.0
75*/
76#if HAVE_GCC_BUILTIN_ATOMIC
77# define osl_atomic_decrement(p) __sync_sub_and_fetch((p), 1)
78#else
79# define osl_atomic_decrement(p) osl_decrementInterlockedCount((p))
80#endif
81
82/// @endcond
83
84#ifdef __cplusplus
85}
86#endif
87
88
89#endif // INCLUDED_OSL_INTERLCK_H
90
91
92/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
93