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 |
29 | extern "C" { |
30 | #endif |
31 | |
32 | typedef 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 | */ |
38 | SAL_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 | */ |
44 | SAL_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 | |