ceph/src/boost/boost/thread/pthread/pthread_mutex_scoped_lock.hpp

   1 #ifndef BOOST_PTHREAD_MUTEX_SCOPED_LOCK_HPP
   2 #define BOOST_PTHREAD_MUTEX_SCOPED_LOCK_HPP
   3 //  (C) Copyright 2007-8 Anthony Williams
   4 //
   5 //  Distributed under the Boost Software License, Version 1.0. (See
   6 //  accompanying file LICENSE_1_0.txt or copy at
   7 //  http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #include <pthread.h>
  10 #include <boost/assert.hpp>
  11 #include <boost/thread/pthread/pthread_helpers.hpp>
  12
  13 #include <boost/config/abi_prefix.hpp>
  14
  15 namespace boost
  16 {
  17     namespace pthread
  18     {
  19         class pthread_mutex_scoped_lock
  20         {
  21             pthread_mutex_t* m;
  22             bool locked;
  23         public:
  24             explicit pthread_mutex_scoped_lock(pthread_mutex_t* m_) BOOST_NOEXCEPT:
  25                 m(m_),locked(true)
  26             {
  27                 BOOST_VERIFY(!posix::pthread_mutex_lock(m));
  28             }
  29             void unlock() BOOST_NOEXCEPT
  30             {
  31                 BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
  32                 locked=false;
  33             }
  34             void unlock_if_locked() BOOST_NOEXCEPT
  35             {
  36               if(locked)
  37               {
  38                   unlock();
  39               }
  40             }
  41             ~pthread_mutex_scoped_lock() BOOST_NOEXCEPT
  42             {
  43                 if(locked)
  44                 {
  45                     unlock();
  46                 }
  47             }
  48
  49         };
  50
  51         class pthread_mutex_scoped_unlock
  52         {
  53             pthread_mutex_t* m;
  54         public:
  55             explicit pthread_mutex_scoped_unlock(pthread_mutex_t* m_) BOOST_NOEXCEPT:
  56                 m(m_)
  57             {
  58                 BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
  59             }
  60             ~pthread_mutex_scoped_unlock() BOOST_NOEXCEPT
  61             {
  62                 BOOST_VERIFY(!posix::pthread_mutex_lock(m));
  63             }
  64
  65         };
  66     }
  67 }
  68
  69 #include <boost/config/abi_suffix.hpp>
  70
  71 #endif