|
1955.1.1
by Brian Aker
Finally added pieces so that you can do a drop lock and wait. |
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> |
|
|
1955.1.1
by Brian Aker
Finally added pieces so that you can do a drop lock and wait. |
23 |
|
24 |
#include <string> |
|
25 |
||
26 |
namespace user_locks { |
|
27 |
namespace locks { |
|
28 |
||
29 |
int64_t WaitFor::val_int() |
|
30 |
{
|
|
31 |
drizzled::String *res= args[0]->val_str(&value); |
|
32 |
||
|
1955.1.2
by Brian Aker
Update such that we can now do a lock test with a wait. |
33 |
if (not res || not res->length()) |
34 |
{
|
|
35 |
my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_LOCK, MYF(0)); |
|
|
1955.1.1
by Brian Aker
Finally added pieces so that you can do a drop lock and wait. |
36 |
return 0; |
37 |
}
|
|
38 |
||
39 |
null_value= false; |
|
40 |
||
41 |
drizzled::session_id_t id= getSession().getSessionId(); |
|
42 |
bool found= false; |
|
43 |
||
44 |
while (not found) |
|
45 |
{
|
|
|
2008.1.1
by Brian Aker
Adding user identifier that makes use of a shared ptr to handle concurrency |
46 |
found= user_locks::Locks::getInstance().isUsed(Key(*getSession().user(), res->c_str()), id); |
|
1955.1.1
by Brian Aker
Finally added pieces so that you can do a drop lock and wait. |
47 |
if (not found) |
48 |
{
|
|
49 |
boost::this_thread::restore_interruption dl(getSession().getThreadInterupt()); |
|
50 |
try { |
|
51 |
user_locks::Locks::getInstance().waitCreate(); |
|
52 |
}
|
|
53 |
catch(boost::thread_interrupted const& error) |
|
54 |
{
|
|
55 |
my_error(drizzled::ER_QUERY_INTERRUPTED, MYF(0)); |
|
56 |
null_value= true; |
|
57 |
return 0; |
|
58 |
}
|
|
59 |
}
|
|
60 |
else
|
|
61 |
{
|
|
62 |
if (id == getSession().getSessionId()) |
|
63 |
{
|
|
64 |
my_error(drizzled::ER_USER_LOCKS_CANT_WAIT_ON_OWN_LOCK, MYF(0)); |
|
65 |
null_value= true; |
|
66 |
return 0; |
|
67 |
}
|
|
68 |
}
|
|
69 |
}
|
|
70 |
||
71 |
return id; |
|
72 |
}
|
|
73 |
||
74 |
} /* namespace locks */ |
|
75 |
} /* namespace user_locks */ |