Drizzled Public API Documentation

get_locks.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/lock_storage.h>
24 
25 #include <string>
26 
27 namespace user_locks {
28 
30 {
31  Keys list_of_locks;
32 
33  for (int64_t x= 0; x < arg_count; x++)
34  {
35  drizzled::String *res= args[x]->val_str(&value);
36 
37  if (res && res->length())
38  {
39  list_of_locks.insert(Key(*getSession().user(), res->c_str()));
40  }
41  else
42  {
43  my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_LOCK, MYF(0));
44  return 0;
45  }
46  }
47  {
48  boost::this_thread::restore_interruption dl(getSession().getThreadInterupt());
49  try
50  {
51  if (not user_locks::Locks::getInstance().lock(getSession().getSessionId(), list_of_locks))
52  return 0;
53  }
54  catch (boost::thread_interrupted const&)
55  {
56  my_error(drizzled::ER_QUERY_INTERRUPTED, MYF(0));
57  null_value= true;
58  return 0;
59  }
60  }
61 
62  user_locks::Storable *list= getSession().getProperty<user_locks::Storable>("user_locks");
63  if (not list)
64  list= getSession().setProperty("user_locks", new user_locks::Storable(getSession().getSessionId()));
65  BOOST_FOREACH(Keys::const_reference iter, list_of_locks)
66  list->insert(iter);
67  null_value= false;
68  return 1;
69 }
70 
71 } /* namespace user_locks */