williamr@2: #ifndef BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
williamr@2: #define BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED
williamr@2: 
williamr@2: // MS compatible compilers support #pragma once
williamr@2: 
williamr@2: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
williamr@2: # pragma once
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: //  boost/detail/lwm_pthreads.hpp
williamr@2: //
williamr@2: //  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
williamr@2: //
williamr@2: // Distributed under the Boost Software License, Version 1.0. (See
williamr@2: // accompanying file LICENSE_1_0.txt or copy at
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: 
williamr@2: #include <pthread.h>
williamr@2: 
williamr@2: namespace boost
williamr@2: {
williamr@2: 
williamr@2: namespace detail
williamr@2: {
williamr@2: 
williamr@2: class lightweight_mutex
williamr@2: {
williamr@2: private:
williamr@2: 
williamr@2:     pthread_mutex_t m_;
williamr@2: 
williamr@2:     lightweight_mutex(lightweight_mutex const &);
williamr@2:     lightweight_mutex & operator=(lightweight_mutex const &);
williamr@2: 
williamr@2: public:
williamr@2: 
williamr@2:     lightweight_mutex()
williamr@2:     {
williamr@2: 
williamr@2: // HPUX 10.20 / DCE has a nonstandard pthread_mutex_init
williamr@2: 
williamr@2: #if defined(__hpux) && defined(_DECTHREADS_)
williamr@2:         pthread_mutex_init(&m_, pthread_mutexattr_default);
williamr@2: #else
williamr@2:         pthread_mutex_init(&m_, 0);
williamr@2: #endif
williamr@2:     }
williamr@2: 
williamr@2:     ~lightweight_mutex()
williamr@2:     {
williamr@2:         pthread_mutex_destroy(&m_);
williamr@2:     }
williamr@2: 
williamr@2:     class scoped_lock;
williamr@2:     friend class scoped_lock;
williamr@2: 
williamr@2:     class scoped_lock
williamr@2:     {
williamr@2:     private:
williamr@2: 
williamr@2:         pthread_mutex_t & m_;
williamr@2: 
williamr@2:         scoped_lock(scoped_lock const &);
williamr@2:         scoped_lock & operator=(scoped_lock const &);
williamr@2: 
williamr@2:     public:
williamr@2: 
williamr@2:         scoped_lock(lightweight_mutex & m): m_(m.m_)
williamr@2:         {
williamr@2:             pthread_mutex_lock(&m_);
williamr@2:         }
williamr@2: 
williamr@2:         ~scoped_lock()
williamr@2:         {
williamr@2:             pthread_mutex_unlock(&m_);
williamr@2:         }
williamr@2:     };
williamr@2: };
williamr@2: 
williamr@2: } // namespace detail
williamr@2: 
williamr@2: } // namespace boost
williamr@2: 
williamr@2: #endif // #ifndef BOOST_DETAIL_LWM_PTHREADS_HPP_INCLUDED