~drizzle-trunk/drizzle/development

1823.6.5 by Brian Aker
Added get_locks() and release_locks();
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
2173.2.1 by Monty Taylor
Fixes incorrect usage of include
21
#include <config.h>
22
#include <plugin/user_locks/module.h>
23
#include <plugin/user_locks/lock_storage.h>
1823.6.5 by Brian Aker
Added get_locks() and release_locks();
24
25
#include <string>
26
27
namespace user_locks {
28
29
int64_t GetLocks::val_int()
30
{
1823.6.7 by Brian Aker
Cleans up namespace for locks (now per user).
31
  Keys list_of_locks;
1823.6.5 by Brian Aker
Added get_locks() and release_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
    {
2008.1.1 by Brian Aker
Adding user identifier that makes use of a shared ptr to handle concurrency
39
      list_of_locks.insert(Key(*getSession().user(), res->c_str()));
1823.6.5 by Brian Aker
Added get_locks() and release_locks();
40
    }
41
    else
42
    {
1955.1.2 by Brian Aker
Update such that we can now do a lock test with a wait.
43
      my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_LOCK, MYF(0));
1823.6.5 by Brian Aker
Added get_locks() and release_locks();
44
      return 0;
45
    }
46
  }
1933.2.5 by Brian Aker
Merge in the ability to kill off locks as well as barriers.
47
  {
48
    boost::this_thread::restore_interruption dl(getSession().getThreadInterupt());
2240.5.7 by Olaf van der Spek
Refactor
49
    try 
50
    {
51
      if (not user_locks::Locks::getInstance().lock(getSession().getSessionId(), list_of_locks))
52
        return 0;
1933.2.5 by Brian Aker
Merge in the ability to kill off locks as well as barriers.
53
    }
2240.5.7 by Olaf van der Spek
Refactor
54
    catch (boost::thread_interrupted const&)
1933.2.5 by Brian Aker
Merge in the ability to kill off locks as well as barriers.
55
    {
56
      my_error(drizzled::ER_QUERY_INTERRUPTED, MYF(0));
57
      null_value= true;
58
      return 0;
59
    }
60
  }
1823.6.5 by Brian Aker
Added get_locks() and release_locks();
61
2240.5.7 by Olaf van der Spek
Refactor
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;
1823.6.5 by Brian Aker
Added get_locks() and release_locks();
69
}
70
71
} /* namespace user_locks */