ceph/src/boost/libs/asio/include/boost/asio/detail/posix_mutex.hpp

   1 //
   2 // detail/posix_mutex.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2016 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
  28 namespace boost {
  29 namespace asio {
  30 namespace detail {
  31
  32 class posix_event;
  33
  34 class posix_mutex
  35   : private noncopyable
  36 {
  37 public:
  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
  61 private:
  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