Drizzled Public API Documentation

queue_thread.cc
00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2011 David Shrewsbury
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #include <config.h>
00022 #include <plugin/slave/queue_thread.h>
00023 #include <drizzled/internal/my_pthread.h>
00024 #include <boost/thread.hpp>
00025 
00026 using namespace drizzled;
00027 
00028 namespace slave
00029 {
00030 
00031 void QueueThread::run(void)
00032 {
00033   boost::posix_time::seconds duration(getSleepInterval());
00034 
00035   /* thread setup needed to do things like create a Session */
00036   internal::my_thread_init();
00037   boost::this_thread::at_thread_exit(&internal::my_thread_end);
00038 
00039   if (not init())
00040     return;
00041 
00042   while (1)
00043   {
00044     {
00045       /* This uninterruptable block processes the message queue */
00046       boost::this_thread::disable_interruption di;
00047 
00048       if (not process())
00049       {
00050         shutdown();
00051         return;
00052       }
00053     }
00054 
00055     /* Interruptable only when not doing work (aka, sleeping) */
00056     try
00057     {
00058       boost::this_thread::sleep(duration);
00059     }
00060     catch (boost::thread_interrupted &)
00061     {
00062       return;
00063     }
00064   }
00065 }
00066 
00067 } /* namespace slave */