diff options
Diffstat (limited to 'storage/mroonga/lib/mrn_auto_increment_value_lock.cpp')
-rw-r--r-- | storage/mroonga/lib/mrn_auto_increment_value_lock.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/storage/mroonga/lib/mrn_auto_increment_value_lock.cpp b/storage/mroonga/lib/mrn_auto_increment_value_lock.cpp new file mode 100644 index 00000000000..3bac5e31c6c --- /dev/null +++ b/storage/mroonga/lib/mrn_auto_increment_value_lock.cpp @@ -0,0 +1,42 @@ +/* -*- 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_)); + } + } +} |