1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <drizzled/show.h>
#include <drizzled/session.h>
#include <drizzled/lock.h>
#include <drizzled/statement/flush.h>
#include "drizzled/sql_table.h"
namespace drizzled
{
bool statement::Flush::execute()
{
/*
* reloadCache() will tell us if we are allowed to write to the
* binlog or not.
*/
if (! reloadCache())
{
/*
* We WANT to write and we CAN write.
* ! we write after unlocking the table.
*
* Presumably, RESET and binlog writing doesn't require synchronization
*/
write_bin_log(session, session->query.c_str());
session->my_ok();
}
return false;
}
bool statement::Flush::reloadCache()
{
bool result= false;
TableList *tables= (TableList *) session->lex->select_lex.table_list.first;
if (flush_log)
{
if (plugin::StorageEngine::flushLogs(NULL))
{
result= true;
}
}
/*
Note that if REFRESH_READ_LOCK bit is set then REFRESH_TABLES is set too
(see sql_yacc.yy)
*/
if (flush_tables || flush_tables_with_read_lock)
{
if (session && flush_tables_with_read_lock)
{
if (lock_global_read_lock(session))
{
return true; /* Killed */
}
result= session->close_cached_tables(tables, true, true);
if (make_global_read_lock_block_commit(session)) /* Killed */
{
/* Don't leave things in a half-locked state */
unlock_global_read_lock(session);
return true;
}
}
else
{
result= session->close_cached_tables(tables, true, false);
}
}
if (session && flush_status)
{
session->refresh_status();
}
return result;
}
}
|