48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef MUTEX_LOCK_INCLUDED
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#define MUTEX_LOCK_INCLUDED
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#include <my_global.h>
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#include <mysql/psi/mysql_thread.h>
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/**
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A simple wrapper around a mutex:
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Grabs the mutex in the CTOR, releases it in the DTOR.
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The mutex may be NULL, in which case this is a no-op.
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*/
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class Mutex_lock
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{
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public:
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explicit Mutex_lock(mysql_mutex_t *mutex) : m_mutex(mutex)
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{
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if (m_mutex)
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mysql_mutex_lock(m_mutex);
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}
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~Mutex_lock()
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{
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if (m_mutex)
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mysql_mutex_unlock(m_mutex);
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}
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private:
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mysql_mutex_t *m_mutex;
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Mutex_lock(const Mutex_lock&); /* Not copyable. */
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void operator=(const Mutex_lock&); /* Not assignable. */
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};
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#endif // MUTEX_LOCK_INCLUDED
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