/Src/Dependencies/Boost/boost/asio/detail/posix_event.hpp
http://hadesmem.googlecode.com/ · C++ Header · 100 lines · 66 code · 19 blank · 15 comment · 3 complexity · 1b98be9a545aaf532b31ac2aed169460 MD5 · raw file
- //
- // detail/posix_event.hpp
- // ~~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
- #ifndef BOOST_ASIO_DETAIL_POSIX_EVENT_HPP
- #define BOOST_ASIO_DETAIL_POSIX_EVENT_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <boost/asio/detail/config.hpp>
- #if defined(BOOST_HAS_PTHREADS) && !defined(BOOST_ASIO_DISABLE_THREADS)
- #include <boost/assert.hpp>
- #include <pthread.h>
- #include <boost/asio/detail/noncopyable.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- namespace detail {
- class posix_event
- : private noncopyable
- {
- public:
- // Constructor.
- BOOST_ASIO_DECL posix_event();
- // Destructor.
- ~posix_event()
- {
- ::pthread_cond_destroy(&cond_);
- }
- // Signal the event.
- template <typename Lock>
- void signal(Lock& lock)
- {
- BOOST_ASSERT(lock.locked());
- (void)lock;
- signalled_ = true;
- ::pthread_cond_signal(&cond_); // Ignore EINVAL.
- }
- // Signal the event and unlock the mutex.
- template <typename Lock>
- void signal_and_unlock(Lock& lock)
- {
- BOOST_ASSERT(lock.locked());
- signalled_ = true;
- lock.unlock();
- ::pthread_cond_signal(&cond_); // Ignore EINVAL.
- }
- // Reset the event.
- template <typename Lock>
- void clear(Lock& lock)
- {
- BOOST_ASSERT(lock.locked());
- (void)lock;
- signalled_ = false;
- }
- // Wait for the event to become signalled.
- template <typename Lock>
- void wait(Lock& lock)
- {
- BOOST_ASSERT(lock.locked());
- while (!signalled_)
- ::pthread_cond_wait(&cond_, &lock.mutex().mutex_); // Ignore EINVAL.
- }
- private:
- ::pthread_cond_t cond_;
- bool signalled_;
- };
- } // namespace detail
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #if defined(BOOST_ASIO_HEADER_ONLY)
- # include <boost/asio/detail/impl/posix_event.ipp>
- #endif // defined(BOOST_ASIO_HEADER_ONLY)
- #endif // defined(BOOST_HAS_PTHREADS) && !defined(BOOST_ASIO_DISABLE_THREADS)
- #endif // BOOST_ASIO_DETAIL_POSIX_EVENT_HPP