ceph/src/boost/boost/asio/detail/posix_static_mutex.hpp

   1 //
   2 // detail/posix_static_mutex.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2019 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.
  36   void init()
  37   {
  38     // Nothing to do.
  39   }
  40
  41   // Lock the mutex.
  42   void lock()
  43   {
  44     (void)::pthread_mutex_lock(&mutex_); // Ignore EINVAL.
  45   }
  46
  47   // Unlock the mutex.
  48   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