//
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// boost/signals2/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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// Copyright (c) 2008 Frank Mori Hess
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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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#ifndef BOOST_SIGNALS2_LWM_PTHREADS_HPP
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#define BOOST_SIGNALS2_LWM_PTHREADS_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#include <boost/assert.hpp>
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#include <pthread.h>
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namespace boost
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{
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namespace signals2
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{
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class mutex
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{
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private:
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pthread_mutex_t m_;
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mutex(mutex const &);
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mutex & operator=(mutex const &);
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public:
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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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BOOST_VERIFY(pthread_mutex_init(&m_, pthread_mutexattr_default) == 0);
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#else
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BOOST_VERIFY(pthread_mutex_init(&m_, 0) == 0);
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#endif
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}
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~mutex()
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{
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BOOST_VERIFY(pthread_mutex_destroy(&m_) == 0);
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}
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void lock()
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{
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BOOST_VERIFY(pthread_mutex_lock(&m_) == 0);
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}
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bool try_lock()
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{
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return pthread_mutex_trylock(&m_) == 0;
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}
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void unlock()
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{
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BOOST_VERIFY(pthread_mutex_unlock(&m_) == 0);
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}
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};
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} // namespace signals2
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} // namespace boost
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#endif // #ifndef BOOST_SIGNALS2_LWM_PTHREADS_HPP
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