1 // 2 // detail/posix_static_mutex.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2021 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_STATIC_MUTEX_HPP 12 #define BOOST_ASIO_DETAIL_POSIX_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_HAS_PTHREADS) 21 22 #include <pthread.h> 23 #include <boost/asio/detail/scoped_lock.hpp> 24 25 #include <boost/asio/detail/push_options.hpp> 26 27 namespace boost { 28 namespace asio { 29 namespace detail { 30 31 struct posix_static_mutex 32 { 33 typedef boost::asio::detail::scoped_lock<posix_static_mutex> scoped_lock; 34 35 // Initialise the mutex. initboost::asio::detail::posix_static_mutex36 void init() 37 { 38 // Nothing to do. 39 } 40 41 // Lock the mutex. lockboost::asio::detail::posix_static_mutex42 void lock() 43 { 44 (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL. 45 } 46 47 // Unlock the mutex. unlockboost::asio::detail::posix_static_mutex48 void unlock() 49 { 50 (void)::pthread_mutex_unlock(&mutex_); // Ignore EINVAL. 51 } 52 53 ::pthread_mutex_t mutex_; 54 }; 55 56 #define BOOST_ASIO_POSIX_STATIC_MUTEX_INIT { PTHREAD_MUTEX_INITIALIZER } 57 58 } // namespace detail 59 } // namespace asio 60 } // namespace boost 61 62 #include <boost/asio/detail/pop_options.hpp> 63 64 #endif // defined(BOOST_ASIO_HAS_PTHREADS) 65 66 #endif // BOOST_ASIO_DETAIL_POSIX_STATIC_MUTEX_HPP 67