Drizzled Public API Documentation

signal.cc

00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2010 Brian Aker
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/user_locks/module.h>
00023 #include <plugin/user_locks/barrier_storage.h>
00024 
00025 #include <string>
00026 
00027 namespace user_locks {
00028 namespace barriers {
00029 
00030 int64_t Signal::val_int()
00031 {
00032   drizzled::String *res= args[0]->val_str(&value);
00033 
00034   if (res and res->length())
00035   {
00036     Barrier::shared_ptr barrier= Barriers::getInstance().find(Key(*getSession().user(), res->c_str()));
00037 
00038     if (barrier)
00039     {
00040       barrier->signal();
00041       null_value= false;
00042 
00043       return 1;
00044     }
00045   }
00046   else if (not res || not res->length())
00047   {
00048     my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_BARRIER, MYF(0));
00049     return 0;
00050   }
00051 
00052   my_error(drizzled::ER_USER_LOCKS_UNKNOWN_BARRIER, MYF(0));
00053   null_value= true;
00054 
00055   return 0;
00056 }
00057 
00058 } /* namespace barriers */
00059 } /* namespace user_locks */