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1//
2// detail/win_static_mutex.hpp
3// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
4//
92f5a8d4 5// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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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_WIN_STATIC_MUTEX_HPP
12#define BOOST_ASIO_DETAIL_WIN_STATIC_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_WINDOWS)
21
22#include <boost/asio/detail/scoped_lock.hpp>
23
24#include <boost/asio/detail/push_options.hpp>
25
26namespace boost {
27namespace asio {
28namespace detail {
29
30struct win_static_mutex
31{
32 typedef boost::asio::detail::scoped_lock<win_static_mutex> scoped_lock;
33
34 // Initialise the mutex.
35 BOOST_ASIO_DECL void init();
36
37 // Initialisation must be performed in a separate function to the "public"
38 // init() function since the compiler does not support the use of structured
39 // exceptions and C++ exceptions in the same function.
40 BOOST_ASIO_DECL int do_init();
41
42 // Lock the mutex.
43 void lock()
44 {
45 ::EnterCriticalSection(&crit_section_);
46 }
47
48 // Unlock the mutex.
49 void unlock()
50 {
51 ::LeaveCriticalSection(&crit_section_);
52 }
53
54 bool initialised_;
55 ::CRITICAL_SECTION crit_section_;
56};
57
58#if defined(UNDER_CE)
59# define BOOST_ASIO_WIN_STATIC_MUTEX_INIT { false, { 0, 0, 0, 0, 0 } }
60#else // defined(UNDER_CE)
61# define BOOST_ASIO_WIN_STATIC_MUTEX_INIT { false, { 0, 0, 0, 0, 0, 0 } }
62#endif // defined(UNDER_CE)
63
64} // namespace detail
65} // namespace asio
66} // namespace boost
67
68#include <boost/asio/detail/pop_options.hpp>
69
70#if defined(BOOST_ASIO_HEADER_ONLY)
71# include <boost/asio/detail/impl/win_static_mutex.ipp>
72#endif // defined(BOOST_ASIO_HEADER_ONLY)
73
74#endif // defined(BOOST_ASIO_WINDOWS)
75
76#endif // BOOST_ASIO_DETAIL_WIN_STATIC_MUTEX_HPP