1 // 2 // detail/win_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_WIN_MUTEX_HPP 12 #define BOOST_ASIO_DETAIL_WIN_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/noncopyable.hpp> 23 #include <boost/asio/detail/scoped_lock.hpp> 24 #include <boost/asio/detail/socket_types.hpp> 25 26 #include <boost/asio/detail/push_options.hpp> 27 28 namespace boost { 29 namespace asio { 30 namespace detail { 31 32 class win_mutex 33 : private noncopyable 34 { 35 public: 36 typedef boost::asio::detail::scoped_lock<win_mutex> scoped_lock; 37 38 // Constructor. 39 BOOST_ASIO_DECL win_mutex(); 40 41 // Destructor. ~win_mutex()42 ~win_mutex() 43 { 44 ::DeleteCriticalSection(&crit_section_); 45 } 46 47 // Lock the mutex. lock()48 void lock() 49 { 50 ::EnterCriticalSection(&crit_section_); 51 } 52 53 // Unlock the mutex. unlock()54 void unlock() 55 { 56 ::LeaveCriticalSection(&crit_section_); 57 } 58 59 private: 60 // Initialisation must be performed in a separate function to the constructor 61 // since the compiler does not support the use of structured exceptions and 62 // C++ exceptions in the same function. 63 BOOST_ASIO_DECL int do_init(); 64 65 ::CRITICAL_SECTION crit_section_; 66 }; 67 68 } // namespace detail 69 } // namespace asio 70 } // namespace boost 71 72 #include <boost/asio/detail/pop_options.hpp> 73 74 #if defined(BOOST_ASIO_HEADER_ONLY) 75 # include <boost/asio/detail/impl/win_mutex.ipp> 76 #endif // defined(BOOST_ASIO_HEADER_ONLY) 77 78 #endif // defined(BOOST_ASIO_WINDOWS) 79 80 #endif // BOOST_ASIO_DETAIL_WIN_MUTEX_HPP 81