source: trunk/doc/src/snippets/code/doc_src_atomic-operations.qdoc@ 865

Last change on this file since 865 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

File size: 2.6 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the documentation of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41//! [0]
42if (*ptr == expected) {
43 *ptr = newval;
44 return !0;
45}
46return 0;
47//! [0]
48
49
50//! [1]
51if (*ptr == expected) {
52 *ptr = newval;
53 return !0;
54}
55return 0;
56//! [1]
57
58
59//! [2]
60++(*ptr);
61return *ptr ? !0 : 0;
62//! [2]
63
64
65//! [3]
66return ++(*ptr);
67//! [3]
68
69
70//! [4]
71++(*ptr);
72return !(ControlRegister & ZeroFlag);
73//! [4]
74
75
76//! [5]
77--(*ptr);
78return *ptr ? : 0;
79//! [5]
80
81
82//! [6]
83return --(*ptr);
84//! [6]
85
86
87//! [7]
88--(*ptr);
89return !(ControlRegister & ZeroFlag);
90//! [7]
91
92
93//! [8]
94tmp = *ptr;
95*ptr = newval;
96return tmp;
97//! [8]
98
99
100//! [9]
101tmp = *ptr;
102*ptr = newval;
103return tmp;
104//! [9]
105
106
107//! [10]
108tmp = *ptr;
109*ptr += value;
110return tmp;
111//! [10]
Note: See TracBrowser for help on using the repository browser.