← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to drizzled/statement/flush.cc

  • Committer: Monty Taylor
  • Date: 2009-12-25 08:50:15 UTC
  • mto: This revision was merged to the branch mainline in revision 1255.
  • Revision ID: mordred@inaugust.com-20091225085015-83sux5qsvy312gew
MEM_ROOT == memory::Root

Show diffs side-by-side

added added

removed removed

Lines of Context:
drizzled/statement/flush.cc
1
1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
2
 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3
3
 *
4
 
 *  Copyright (C) 2009 Sun Microsystems, Inc.
 
4
 *  Copyright (C) 2009 Sun Microsystems
5
5
 *
6
6
 *  This program is free software; you can redistribute it and/or modify
7
7
 *  it under the terms of the GNU General Public License as published by
19
19
 */
20
20
 
21
21
#include "config.h"
22
 
 
23
22
#include <drizzled/show.h>
24
23
#include <drizzled/session.h>
25
24
#include <drizzled/lock.h>
26
25
#include <drizzled/statement/flush.h>
27
26
#include "drizzled/sql_table.h"
28
 
#include "drizzled/plugin/logging.h"
29
 
#include "drizzled/plugin/storage_engine.h"
30
27
 
31
28
namespace drizzled
32
29
{
37
34
   * reloadCache() will tell us if we are allowed to write to the
38
35
   * binlog or not.
39
36
   */
40
 
  if (not reloadCache())
 
37
  if (! reloadCache())
41
38
  {
42
39
    /*
43
40
     * We WANT to write and we CAN write.
45
42
     *
46
43
     * Presumably, RESET and binlog writing doesn't require synchronization
47
44
     */
48
 
    write_bin_log(getSession(), *getSession()->getQueryString());
49
 
    getSession()->my_ok();
 
45
    write_bin_log(session, session->query, session->query_length);
 
46
    session->my_ok();
50
47
  }
51
48
 
52
49
  return false;
55
52
bool statement::Flush::reloadCache()
56
53
{
57
54
  bool result= false;
58
 
  TableList *tables= (TableList *) getSession()->lex->select_lex.table_list.first;
 
55
  ulong options= session->lex->type;
 
56
  TableList *tables= (TableList *) session->lex->select_lex.table_list.first;
59
57
 
60
 
  if (flush_log)
 
58
  if (options & REFRESH_LOG)
61
59
  {
62
60
    if (plugin::StorageEngine::flushLogs(NULL))
63
61
    {
68
66
    Note that if REFRESH_READ_LOCK bit is set then REFRESH_TABLES is set too
69
67
    (see sql_yacc.yy)
70
68
  */
71
 
  if (flush_tables || flush_tables_with_read_lock)
 
69
  if (options & (REFRESH_TABLES | REFRESH_READ_LOCK))
72
70
  {
73
 
    if (getSession() && flush_tables_with_read_lock)
 
71
    if ((options & REFRESH_READ_LOCK) && session)
74
72
    {
75
 
      if (getSession()->lockGlobalReadLock())
 
73
      if (lock_global_read_lock(session))
76
74
      {
77
75
        return true; /* Killed */
78
76
      }
79
 
      result= getSession()->close_cached_tables(tables, true, true);
80
 
 
81
 
      if (getSession()->makeGlobalReadLockBlockCommit()) /* Killed */
 
77
      result= session->close_cached_tables(tables, 
 
78
                                           (options & REFRESH_FAST) ?  false : true, 
 
79
                                           true);
 
80
      if (make_global_read_lock_block_commit(session)) /* Killed */
82
81
      {
83
82
        /* Don't leave things in a half-locked state */
84
 
        getSession()->unlockGlobalReadLock();
 
83
        unlock_global_read_lock(session);
85
84
        return true;
86
85
      }
87
86
    }
88
87
    else
89
88
    {
90
 
      result= getSession()->close_cached_tables(tables, true, false);
 
89
      result= session->close_cached_tables(tables, 
 
90
                                           (options & REFRESH_FAST) ?  false : true, 
 
91
                                           false);
91
92
    }
92
93
  }
93
94
 
94
 
  if (getSession() && flush_status)
95
 
  {
96
 
    getSession()->refresh_status();
97
 
  }
98
 
 
99
 
  if (getSession() && flush_global_status)
100
 
  {
101
 
    memset(&current_global_counters, 0, sizeof(current_global_counters));
102
 
    plugin::Logging::resetStats(getSession());
103
 
    getSession()->refresh_status();
104
 
  }
105
 
 
106
 
  return result;
 
95
  if (session && (options & REFRESH_STATUS))
 
96
  {
 
97
    session->refresh_status();
 
98
  }
 
99
 
 
100
 return result;
107
101
}
108
102
 
109
103
}