51 lines
2.5 KiB
C++
51 lines
2.5 KiB
C++
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// Copyright (C) 2000 Stephen Cleary
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org for updates, documentation, and revision history.
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#ifndef BOOST_POOL_MUTEX_HPP
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#define BOOST_POOL_MUTEX_HPP
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#include <boost/config.hpp> // for workarounds
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#if defined (BOOST_HAS_THREADS) && !defined(BOOST_POOL_NO_MT)
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#if defined (BOOST_NO_CXX11_HDR_MUTEX)
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#include <boost/thread/mutex.hpp>
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#else
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#include <mutex>
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#endif
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#endif
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namespace boost{ namespace details{ namespace pool{
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class null_mutex
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{
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private:
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null_mutex(const null_mutex &);
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void operator=(const null_mutex &);
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public:
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null_mutex() { }
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static void lock() { }
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static void unlock() { }
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};
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#if !defined(BOOST_HAS_THREADS) || defined(BOOST_NO_MT) || defined(BOOST_POOL_NO_MT)
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typedef null_mutex default_mutex;
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#else
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#if defined (BOOST_NO_CXX11_HDR_MUTEX)
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typedef boost::mutex default_mutex;
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#else
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typedef std::mutex default_mutex;
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#endif
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#endif
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} // namespace pool
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} // namespace details
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} // namespace boost
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#endif
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