Drizzled Public API Documentation

wait_until.cc
1 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2010 Brian Aker
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/user_locks/module.h>
23 #include <plugin/user_locks/barrier_storage.h>
24 
25 #include <string>
26 
27 namespace user_locks {
28 namespace barriers {
29 
31 {
32  drizzled::String *res= args[0]->val_str(&value);
33  int64_t wait_until= args[1]->val_int();
34 
35  if (res and res->length() and wait_until)
36  {
37  Barrier::shared_ptr barrier= Barriers::getInstance().find(Key(*getSession().user(), res->c_str()));
38 
39  if (barrier and barrier->getOwner() == getSession().getSessionId())
40  {
41  my_error(drizzled::ER_USER_LOCKS_CANT_WAIT_ON_OWN_BARRIER, MYF(0));
42 
43  return 0;
44  }
45  else if (barrier)
46  {
47  boost::this_thread::restore_interruption dl(getSession().getThreadInterupt());
48  try {
49  barrier->wait_until(wait_until);
50  }
51  catch(boost::thread_interrupted const&)
52  {
53  // We need to issue a different sort of error here
54  my_error(drizzled::ER_QUERY_INTERRUPTED, MYF(0));
55  return 0;
56  }
57 
58  null_value= false;
59 
60  return 1;
61  }
62  }
63  else if (not res || not res->length())
64  {
65  my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_BARRIER, MYF(0));
66  return 0;
67  }
68 
69  my_error(drizzled::ER_USER_LOCKS_UNKNOWN_BARRIER, MYF(0));
70  null_value= false;
71 
72  return 0;
73 }
74 
75 } /* namespace barriers */
76 } /* namespace user_locks */