Drizzled Public API Documentation

queue_thread.cc
1 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2011 David Shrewsbury
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <config.h>
22 #include <plugin/slave/queue_thread.h>
23 #include <drizzled/internal/my_pthread.h>
24 #include <boost/thread.hpp>
25 
26 using namespace drizzled;
27 
28 namespace slave {
29 
30 void QueueThread::run()
31 {
32  boost::posix_time::seconds duration(getSleepInterval());
33 
34  /* thread setup needed to do things like create a Session */
35  internal::my_thread_init();
36 
37  if (not init())
38  return;
39 
40  while (1)
41  {
42  {
43  /* This uninterruptable block processes the message queue */
44  boost::this_thread::disable_interruption di;
45 
46  if (not process())
47  {
48  shutdown();
49  return;
50  }
51  }
52 
53  /* Interruptable only when not doing work (aka, sleeping) */
54  try
55  {
56  boost::this_thread::sleep(duration);
57  }
58  catch (boost::thread_interrupted &)
59  {
60  return;
61  }
62  }
63 }
64 
65 } /* namespace slave */