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88 lines
1.7 KiB
C++
88 lines
1.7 KiB
C++
#ifndef BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
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#define BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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// boost/detail/lwm_pthreads.hpp
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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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#include <pthread.h>
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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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pthread_mutex_t 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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// HPUX 10.20 / DCE has a nonstandard pthread_mutex_init
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#if defined(__hpux) && defined(_DECTHREADS_)
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pthread_mutex_init(&m_, pthread_mutexattr_default);
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#else
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pthread_mutex_init(&m_, 0);
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#endif
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}
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~lightweight_mutex()
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{
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pthread_mutex_destroy(&m_);
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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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pthread_mutex_t & 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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pthread_mutex_lock(&m_);
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}
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~scoped_lock()
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{
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pthread_mutex_unlock(&m_);
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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_DETAIL_LWM_PTHREADS_HPP_INCLUDED
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