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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems, Inc.
*
* 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>
#include <drizzled/plugin/logging.h>
#include <drizzled/plugin/storage_engine.h>
#include <drizzled/statistics_variables.h>
namespace drizzled {
bool statement::Flush::execute()
{
/*
* reloadCache() will tell us if we are allowed to write to the
* binlog or not.
*/
if (not reloadCache())
{
session().my_ok();
}
return false;
}
bool statement::Flush::reloadCache()
{
bool result= false;
TableList *tables= (TableList *) 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 (session().lockGlobalReadLock())
{
return true; /* Killed */
}
result= session().close_cached_tables(tables, true, true);
if (session().makeGlobalReadLockBlockCommit()) /* Killed */
{
/* Don't leave things in a half-locked state */
session().unlockGlobalReadLock();
return true;
}
}
else
{
result= session().close_cached_tables(tables, true, false);
}
}
if (&session() && flush_status)
{
session().refresh_status();
}
if (&session() && flush_global_status)
{
memset(¤t_global_counters, 0, sizeof(current_global_counters));
plugin::Logging::resetStats(&session());
session().refresh_status();
}
return result;
}
}
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