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43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
/* -*- c-basic-offset: 2 -*- */
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/*
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Copyright(C) 2012 Kouhei Sutou <kou@clear-code.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*/
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#include "mrn_auto_increment_value_lock.hpp"
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#if MYSQL_VERSION_ID >= 50500
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# define AUTO_INCREMENT_VALUE_MUTEX(table_share) (&(table_share->LOCK_ha_data))
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#else
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# define AUTO_INCREMENT_VALUE_MUTEX(table_share) (&(table_share->mutex))
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#endif
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namespace mrn {
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AutoIncrementValueLock::AutoIncrementValueLock(TABLE_SHARE *table_share)
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: table_share_(table_share),
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need_lock_(table_share_->tmp_table == NO_TMP_TABLE) {
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if (need_lock_) {
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mysql_mutex_lock(AUTO_INCREMENT_VALUE_MUTEX(table_share_));
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}
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}
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AutoIncrementValueLock::~AutoIncrementValueLock() {
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if (need_lock_) {
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mysql_mutex_unlock(AUTO_INCREMENT_VALUE_MUTEX(table_share_));
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}
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}
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}
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