#ifndef BOOST_SMART_PTR_DETAIL_LWM_STD_MUTEX_HPP_INCLUDED
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#define BOOST_SMART_PTR_DETAIL_LWM_STD_MUTEX_HPP_INCLUDED
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// Copyright 2020 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt)
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#include <boost/assert.hpp>
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#include <mutex>
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namespace boost
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{
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namespace detail
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{
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class lightweight_mutex
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{
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private:
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std::mutex m_;
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lightweight_mutex(lightweight_mutex const &);
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lightweight_mutex & operator=(lightweight_mutex const &);
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public:
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lightweight_mutex()
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{
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}
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class scoped_lock;
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friend class scoped_lock;
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class scoped_lock
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{
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private:
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std::mutex & m_;
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scoped_lock(scoped_lock const &);
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scoped_lock & operator=(scoped_lock const &);
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public:
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scoped_lock( lightweight_mutex & m ): m_( m.m_ )
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{
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m_.lock();
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}
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~scoped_lock()
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{
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m_.unlock();
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}
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};
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};
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} // namespace detail
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} // namespace boost
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#endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_STD_MUTEX_HPP_INCLUDED
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