ceph/src/boost/libs/interprocess/example/doc_named_condition_shared_data.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2006-2012. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10    #include <boost/interprocess/sync/interprocess_mutex.hpp>
  11    #include <boost/interprocess/sync/interprocess_condition.hpp>
  12
  13    struct trace_queue
  14    {
  15       enum { LineSize = 100 };
  16
  17       trace_queue()
  18          :  message_in(false)
  19       {}
  20
  21       //Mutex to protect access to the queue
  22       boost::interprocess::interprocess_mutex      mutex;
  23
  24       //Condition to wait when the queue is empty
  25       boost::interprocess::interprocess_condition  cond_empty;
  26
  27       //Condition to wait when the queue is full
  28       boost::interprocess::interprocess_condition  cond_full;
  29
  30       //Items to fill
  31       char   items[LineSize];
  32
  33       //Is there any message
  34       bool message_in;
  35    };