Drizzled Public API Documentation

release_wait.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 namespace locks {
29 
31 {
32  drizzled::String *res= args[0]->val_str(&value);
33 
34  if (not res || not res->length())
35  {
36  my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_LOCK, MYF(0));
37  return 0;
38  }
39  null_value= false;
40 
41  drizzled::identifier::user::ptr user_identifier(getSession().user());
42  drizzled::session_id_t id= getSession().getSessionId();
43  locks::return_t result;
44 
45  {
46  boost::this_thread::restore_interruption dl(getSession().getThreadInterupt());
47  try {
48  result= user_locks::Locks::getInstance().release(Key(*user_identifier, res->c_str()), id, true);
49  }
50  catch(boost::thread_interrupted const& error)
51  {
52  my_error(drizzled::ER_QUERY_INTERRUPTED, MYF(0));
53  return 0;
54  }
55  }
56 
57  switch (result)
58  {
59  default:
60  case locks::SUCCESS:
61  {
62  user_locks::Storable *list= getSession().getProperty<user_locks::Storable>("user_locks");
63  assert(list);
64  if (list) // Just in case we ever blow the assert
65  list->erase(Key(*user_identifier, res->c_str()));
66  return 1;
67  }
68  case locks::NOT_FOUND:
69  null_value= true;
70  return 0;
71  case locks::NOT_OWNED_BY:
72  my_error(drizzled::ER_USER_LOCKS_NOT_OWNER_OF_LOCK, MYF(0));
73  return 0;
74  }
75 }
76 
77 } /* namespace locks */
78 } /* namespace user_locks */
session_id_t getSessionId() const
Definition: session.h:644
bool null_value
Definition: item.h:122
virtual String * val_str(String *str)=0