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63 lines
2.1 KiB
63 lines
2.1 KiB
5 months ago
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/* Copyright (c) 2014, 2017, 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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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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/**
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@file include/mutex_lock.h
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*/
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#include <mysql/psi/mysql_mutex.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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public:
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explicit Mutex_lock(mysql_mutex_t *mutex, const char *src_file, int src_line)
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: m_mutex(mutex), m_src_file(src_file), m_src_line(src_line) {
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if (m_mutex) {
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mysql_mutex_lock_with_src(m_mutex, m_src_file, m_src_line);
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}
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}
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~Mutex_lock() {
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if (m_mutex) {
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mysql_mutex_unlock_with_src(m_mutex, m_src_file, m_src_line);
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}
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}
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private:
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mysql_mutex_t *m_mutex;
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const char *m_src_file;
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int m_src_line;
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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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#define MUTEX_LOCK(NAME, X) Mutex_lock NAME(X, __FILE__, __LINE__)
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#endif // MUTEX_LOCK_INCLUDED
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