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 ASIO_DETAIL_POSIX_MUTEX_HPP 12 #define ASIO_DETAIL_POSIX_MUTEX_HPP 13 14 15 #include "asio/detail/config.hpp" 16 17 #if defined(ASIO_HAS_PTHREADS) 18 19 #include <pthread.h> 20 #include "asio/detail/noncopyable.hpp" 21 #include "asio/detail/scoped_lock.hpp" 22 23 #include "asio/detail/push_options.hpp" 24 25 namespace asio { 26 namespace detail { 27 28 class posix_event; 29 30 class posix_mutex 31 : private noncopyable 32 { 33 public: 34 typedef asio::detail::scoped_lock<posix_mutex> scoped_lock; 35 36 // Constructor. 37 ASIO_DECL posix_mutex(); 38 39 // Destructor. ~posix_mutex()40 ~posix_mutex() 41 { 42 ::pthread_mutex_destroy(&mutex_); // Ignore EBUSY. 43 } 44 45 // Lock the mutex. lock()46 void lock() 47 { 48 (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL. 49 } 50 51 // Unlock the mutex. unlock()52 void unlock() 53 { 54 (void)::pthread_mutex_unlock(&mutex_); // Ignore EINVAL. 55 } 56 57 private: 58 friend class posix_event; 59 ::pthread_mutex_t mutex_; 60 }; 61 62 } // namespace detail 63 } // namespace asio 64 65 #include "asio/detail/pop_options.hpp" 66 67 # include "asio/detail/impl/posix_mutex.ipp" 68 69 #endif // defined(ASIO_HAS_PTHREADS) 70 71 #endif // ASIO_DETAIL_POSIX_MUTEX_HPP 72