Chris@16: //
Chris@16: //  boost/signals2/detail/lwm_pthreads.hpp
Chris@16: //
Chris@16: //  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
Chris@16: //  Copyright (c) 2008 Frank Mori Hess
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_SIGNALS2_LWM_PTHREADS_HPP
Chris@16: #define BOOST_SIGNALS2_LWM_PTHREADS_HPP
Chris@16: 
Chris@16: // MS compatible compilers support #pragma once
Chris@16: 
Chris@101: #if defined(_MSC_VER)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/assert.hpp>
Chris@16: #include <pthread.h>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: 
Chris@16: namespace signals2
Chris@16: {
Chris@16: 
Chris@16: class mutex
Chris@16: {
Chris@16: private:
Chris@16: 
Chris@16:     pthread_mutex_t m_;
Chris@16: 
Chris@16:     mutex(mutex const &);
Chris@16:     mutex & operator=(mutex const &);
Chris@16: 
Chris@16: public:
Chris@16: 
Chris@16:     mutex()
Chris@16:     {
Chris@16: 
Chris@16: // HPUX 10.20 / DCE has a nonstandard pthread_mutex_init
Chris@16: 
Chris@16: #if defined(__hpux) && defined(_DECTHREADS_)
Chris@16:         BOOST_VERIFY(pthread_mutex_init(&m_, pthread_mutexattr_default) == 0);
Chris@16: #else
Chris@16:         BOOST_VERIFY(pthread_mutex_init(&m_, 0) == 0);
Chris@16: #endif
Chris@16:     }
Chris@16: 
Chris@16:     ~mutex()
Chris@16:     {
Chris@16:         BOOST_VERIFY(pthread_mutex_destroy(&m_) == 0);
Chris@16:     }
Chris@16: 
Chris@16:     void lock()
Chris@16:     {
Chris@16:         BOOST_VERIFY(pthread_mutex_lock(&m_) == 0);
Chris@16:     }
Chris@16: 
Chris@16:     bool try_lock()
Chris@16:     {
Chris@16:         return pthread_mutex_trylock(&m_) == 0;
Chris@16:     }
Chris@16: 
Chris@16:     void unlock()
Chris@16:     {
Chris@16:         BOOST_VERIFY(pthread_mutex_unlock(&m_) == 0);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: } // namespace signals2
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // #ifndef BOOST_SIGNALS2_LWM_PTHREADS_HPP