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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
*
* 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 <drizzled/server_includes.h>
#include <drizzled/show.h>
#include <drizzled/session.h>
#include <drizzled/lock.h>
#include <drizzled/statement/flush.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, session->query_length);
session->my_ok();
}
return false;
}
bool statement::Flush::reloadCache()
{
bool result= false;
ulong options= session->lex->type;
TableList *tables= (TableList *) session->lex->select_lex.table_list.first;
if (options & REFRESH_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 (options & (REFRESH_TABLES | REFRESH_READ_LOCK))
{
if ((options & REFRESH_READ_LOCK) && session)
{
if (lock_global_read_lock(session))
{
return true; /* Killed */
}
result= session->close_cached_tables(tables,
(options & REFRESH_FAST) ? false : 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,
(options & REFRESH_FAST) ? false : true,
false);
}
}
if (session && (options & REFRESH_STATUS))
{
session->refresh_status();
}
return result;
}
}
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