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- #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
- #define BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED
- #if defined(_MSC_VER) && (_MSC_VER >= 1020)
- # pragma once
- #endif
- #include <pthread.h>
- namespace boost
- {
- namespace detail
- {
- class lightweight_mutex
- {
- private:
- pthread_mutex_t m_;
- lightweight_mutex(lightweight_mutex const &);
- lightweight_mutex & operator=(lightweight_mutex const &);
- public:
- lightweight_mutex()
- {
- #if defined(__hpux) && defined(_DECTHREADS_)
- pthread_mutex_init(&m_, pthread_mutexattr_default);
- #else
- pthread_mutex_init(&m_, 0);
- #endif
- }
- ~lightweight_mutex()
- {
- pthread_mutex_destroy(&m_);
- }
- class scoped_lock;
- friend class scoped_lock;
- class scoped_lock
- {
- private:
- pthread_mutex_t & m_;
- scoped_lock(scoped_lock const &);
- scoped_lock & operator=(scoped_lock const &);
- public:
- scoped_lock(lightweight_mutex & m): m_(m.m_)
- {
- pthread_mutex_lock(&m_);
- }
- ~scoped_lock()
- {
- pthread_mutex_unlock(&m_);
- }
- };
- };
- }
- }
- #endif
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