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/* -*- c-basic-offset: 2 -*- */
/*
Copyright(C) 2012 Kouhei Sutou <kou@clear-code.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mrn_auto_increment_value_lock.hpp"
#if MYSQL_VERSION_ID >= 50500
# define AUTO_INCREMENT_VALUE_MUTEX(table_share) (&(table_share->LOCK_ha_data))
#else
# define AUTO_INCREMENT_VALUE_MUTEX(table_share) (&(table_share->mutex))
#endif
namespace mrn {
AutoIncrementValueLock::AutoIncrementValueLock(TABLE_SHARE *table_share)
: table_share_(table_share),
need_lock_(table_share_->tmp_table == NO_TMP_TABLE) {
if (need_lock_) {
mysql_mutex_lock(AUTO_INCREMENT_VALUE_MUTEX(table_share_));
}
}
AutoIncrementValueLock::~AutoIncrementValueLock() {
if (need_lock_) {
mysql_mutex_unlock(AUTO_INCREMENT_VALUE_MUTEX(table_share_));
}
}
}
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