1//
2// detail/posix_mutex.hpp
3// ~~~~~~~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6//
7// Distributed under the Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9//
10
11#ifndef BOOST_ASIO_DETAIL_POSIX_MUTEX_HPP
12#define BOOST_ASIO_DETAIL_POSIX_MUTEX_HPP
13
14#if defined(_MSC_VER) && (_MSC_VER >= 1200)
15# pragma once
16#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
17
18#include <boost/asio/detail/config.hpp>
19
20#if defined(BOOST_ASIO_HAS_PTHREADS)
21
22#include <pthread.h>
23#include <boost/asio/detail/noncopyable.hpp>
24#include <boost/asio/detail/scoped_lock.hpp>
25
26#include <boost/asio/detail/push_options.hpp>
27
28namespace boost {
29namespace asio {
30namespace detail {
31
32class posix_event;
33
34class posix_mutex
35 : private noncopyable
36{
37public:
38 typedef boost::asio::detail::scoped_lock<posix_mutex> scoped_lock;
39
40 // Constructor.
41 BOOST_ASIO_DECL posix_mutex();
42
43 // Destructor.
44 ~posix_mutex()
45 {
46 ::pthread_mutex_destroy(&mutex_); // Ignore EBUSY.
47 }
48
49 // Lock the mutex.
50 void lock()
51 {
52 (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL.
53 }
54
55 // Unlock the mutex.
56 void unlock()
57 {
58 (void)::pthread_mutex_unlock(&mutex_); // Ignore EINVAL.
59 }
60
61private:
62 friend class posix_event;
63 ::pthread_mutex_t mutex_;
64};
65
66} // namespace detail
67} // namespace asio
68} // namespace boost
69
70#include <boost/asio/detail/pop_options.hpp>
71
72#if defined(BOOST_ASIO_HEADER_ONLY)
73# include <boost/asio/detail/impl/posix_mutex.ipp>
74#endif // defined(BOOST_ASIO_HEADER_ONLY)
75
76#endif // defined(BOOST_ASIO_HAS_PTHREADS)
77
78#endif // BOOST_ASIO_DETAIL_POSIX_MUTEX_HPP
79