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50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
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#ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
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#define BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
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#if _MSC_VER >= 1020
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#pragma once
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#endif
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//
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// boost/detail/lightweight_mutex.hpp - lightweight mutex
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//
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// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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// typedef <implementation-defined> boost::detail::lightweight_mutex;
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//
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// boost::detail::lightweight_mutex meets the Mutex concept requirements
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// See http://www.boost.org/libs/thread/doc/mutex_concept.html#Mutex
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//
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// * Used by the smart pointer library
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// * Performance oriented
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// * Header-only implementation
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// * Small memory footprint
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// * Not a general purpose mutex, use boost::mutex, CRITICAL_SECTION or
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// pthread_mutex instead.
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// * Never spin in a tight lock/do-something/unlock loop, since
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// lightweight_mutex does not guarantee fairness.
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// * Never keep a lightweight_mutex locked for long periods.
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//
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#include <boost/config.hpp>
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#ifndef BOOST_HAS_THREADS
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# include <boost/detail/lwm_nop.hpp>
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#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
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# include <boost/detail/lwm_win32.hpp>
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//#elif defined(linux) || defined(__linux) || defined(__linux__)
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//# include <boost/detail/lwm_linux.hpp>
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#elif defined(BOOST_HAS_PTHREADS)
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# include <boost/detail/lwm_pthreads.hpp>
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#else
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# include <boost/detail/lwm_nop.hpp>
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#endif
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#endif // #ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
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