MPD: thread/CriticalSection.hxx Source File

MPD 0.20.18

CriticalSection.hxx
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1 /*
2 * Copyright (C) 2009-2013 Max Kellermann <max.kellermann@gmail.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20 * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27 * OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef THREAD_CRITICAL_SECTION_HXX
31 #define THREAD_CRITICAL_SECTION_HXX
32
33 #include <windows.h>
34
38 class CriticalSection {
39 friend class WindowsCond;
40
41 CRITICAL_SECTION critical_section;
42
43 public:
44 CriticalSection() {
45 ::InitializeCriticalSection(&critical_section);
46 }
47
48 ~CriticalSection() {
49 ::DeleteCriticalSection(&critical_section);
50 }
51
52 CriticalSection(const CriticalSection &other) = delete;
53 CriticalSection &operator=(const CriticalSection &other) = delete;
54
55 void lock() {
56 ::EnterCriticalSection(&critical_section);
57 };
58
59 bool try_lock() {
60 return ::TryEnterCriticalSection(&critical_section) != 0;
61 };
62
63 void unlock() {
64 ::LeaveCriticalSection(&critical_section);
65 }
66 };
67
68 #endif
CriticalSection::try_lock
bool try_lock()
Definition: CriticalSection.hxx:59
CriticalSection::unlock
void unlock()
Definition: CriticalSection.hxx:63
CriticalSection::operator=
CriticalSection & operator=(const CriticalSection &other)=delete
WindowsCond
Wrapper for a CONDITION_VARIABLE, backend for the Cond class.
Definition: WindowsCond.hxx:40
CriticalSection
Wrapper for a CRITICAL_SECTION, backend for the Mutex class.
Definition: CriticalSection.hxx:38
CriticalSection::~CriticalSection
~CriticalSection()
Definition: CriticalSection.hxx:48
CriticalSection::lock
void lock()
Definition: CriticalSection.hxx:55
CriticalSection::CriticalSection
CriticalSection()
Definition: CriticalSection.hxx:44