Chris@16: #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
Chris@16: #define BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
Chris@16: 
Chris@16: // MS compatible compilers support #pragma once
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: //
Chris@16: //  boost/detail/lwm_pthreads.hpp
Chris@16: //
Chris@16: //  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
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: #include <boost/assert.hpp>
Chris@16: #include <pthread.h>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16: 
Chris@16: class lightweight_mutex
Chris@16: {
Chris@16: private:
Chris@16: 
Chris@16:     pthread_mutex_t m_;
Chris@16: 
Chris@16:     lightweight_mutex(lightweight_mutex const &);
Chris@16:     lightweight_mutex & operator=(lightweight_mutex const &);
Chris@16: 
Chris@16: public:
Chris@16: 
Chris@16:     lightweight_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:     ~lightweight_mutex()
Chris@16:     {
Chris@16:         BOOST_VERIFY( pthread_mutex_destroy( &m_ ) == 0 );
Chris@16:     }
Chris@16: 
Chris@16:     class scoped_lock;
Chris@16:     friend class scoped_lock;
Chris@16: 
Chris@16:     class scoped_lock
Chris@16:     {
Chris@16:     private:
Chris@16: 
Chris@16:         pthread_mutex_t & m_;
Chris@16: 
Chris@16:         scoped_lock(scoped_lock const &);
Chris@16:         scoped_lock & operator=(scoped_lock const &);
Chris@16: 
Chris@16:     public:
Chris@16: 
Chris@16:         scoped_lock(lightweight_mutex & m): m_(m.m_)
Chris@16:         {
Chris@16:             BOOST_VERIFY( pthread_mutex_lock( &m_ ) == 0 );
Chris@16:         }
Chris@16: 
Chris@16:         ~scoped_lock()
Chris@16:         {
Chris@16:             BOOST_VERIFY( pthread_mutex_unlock( &m_ ) == 0 );
Chris@16:         }
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: } // namespace detail
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED