From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001 From: Karen Arutyunov Date: Thu, 2 Nov 2017 23:11:29 +0300 Subject: Add implementation --- mysql/mutex_lock.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 mysql/mutex_lock.h (limited to 'mysql/mutex_lock.h') diff --git a/mysql/mutex_lock.h b/mysql/mutex_lock.h new file mode 100644 index 0000000..abb2c51 --- /dev/null +++ b/mysql/mutex_lock.h @@ -0,0 +1,47 @@ +/* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ + +#ifndef MUTEX_LOCK_INCLUDED +#define MUTEX_LOCK_INCLUDED + +#include +#include + +/** + A simple wrapper around a mutex: + Grabs the mutex in the CTOR, releases it in the DTOR. + The mutex may be NULL, in which case this is a no-op. +*/ +class Mutex_lock +{ +public: + explicit Mutex_lock(mysql_mutex_t *mutex) : m_mutex(mutex) + { + if (m_mutex) + mysql_mutex_lock(m_mutex); + } + ~Mutex_lock() + { + if (m_mutex) + mysql_mutex_unlock(m_mutex); + } +private: + mysql_mutex_t *m_mutex; + + Mutex_lock(const Mutex_lock&); /* Not copyable. */ + void operator=(const Mutex_lock&); /* Not assignable. */ +}; + +#endif // MUTEX_LOCK_INCLUDED -- cgit v1.1