171 lines
4.4 KiB
C++
171 lines
4.4 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file detail/event.hpp
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* \author Andrey Semashev
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* \date 24.07.2011
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*/
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#ifndef BOOST_LOG_DETAIL_EVENT_HPP_INCLUDED_
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#define BOOST_LOG_DETAIL_EVENT_HPP_INCLUDED_
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#include <boost/log/detail/config.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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#ifndef BOOST_LOG_NO_THREADS
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#if defined(BOOST_THREAD_PLATFORM_PTHREAD)
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# include <boost/atomic/capabilities.hpp>
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# if (defined(linux) || defined(__linux) || defined(__linux__)) && BOOST_ATOMIC_INT_LOCK_FREE == 2
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# include <boost/atomic/atomic.hpp>
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# define BOOST_LOG_EVENT_USE_FUTEX
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# elif defined(_POSIX_SEMAPHORES) && (_POSIX_SEMAPHORES + 0) > 0 && BOOST_ATOMIC_FLAG_LOCK_FREE == 2
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# include <semaphore.h>
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# include <boost/cstdint.hpp>
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# include <boost/atomic/atomic_flag.hpp>
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# define BOOST_LOG_EVENT_USE_POSIX_SEMAPHORE
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# endif
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#elif defined(BOOST_THREAD_PLATFORM_WIN32)
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# include <boost/cstdint.hpp>
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# define BOOST_LOG_EVENT_USE_WINAPI
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#endif
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#if !defined(BOOST_LOG_EVENT_USE_POSIX_SEMAPHORE) && !defined(BOOST_LOG_EVENT_USE_WINAPI)
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# include <boost/thread/mutex.hpp>
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# include <boost/thread/condition_variable.hpp>
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# define BOOST_LOG_EVENT_USE_BOOST_CONDITION
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#endif
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#include <boost/log/detail/header.hpp>
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namespace boost {
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BOOST_LOG_OPEN_NAMESPACE
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namespace aux {
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#if defined(BOOST_LOG_EVENT_USE_FUTEX)
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class futex_based_event
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{
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private:
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boost::atomic< int > m_state;
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public:
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//! Default constructor
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BOOST_LOG_API futex_based_event();
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//! Destructor
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BOOST_LOG_API ~futex_based_event();
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//! Waits for the object to become signalled
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BOOST_LOG_API void wait();
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//! Sets the object to a signalled state
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BOOST_LOG_API void set_signalled();
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// Copying prohibited
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BOOST_DELETED_FUNCTION(futex_based_event(futex_based_event const&))
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BOOST_DELETED_FUNCTION(futex_based_event& operator= (futex_based_event const&))
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};
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typedef futex_based_event event;
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#elif defined(BOOST_LOG_EVENT_USE_POSIX_SEMAPHORE)
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class sem_based_event
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{
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private:
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boost::atomic_flag m_state;
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sem_t m_semaphore;
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public:
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//! Default constructor
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BOOST_LOG_API sem_based_event();
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//! Destructor
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BOOST_LOG_API ~sem_based_event();
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//! Waits for the object to become signalled
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BOOST_LOG_API void wait();
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//! Sets the object to a signalled state
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BOOST_LOG_API void set_signalled();
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// Copying prohibited
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BOOST_DELETED_FUNCTION(sem_based_event(sem_based_event const&))
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BOOST_DELETED_FUNCTION(sem_based_event& operator= (sem_based_event const&))
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};
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typedef sem_based_event event;
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#elif defined(BOOST_LOG_EVENT_USE_WINAPI)
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class winapi_based_event
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{
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private:
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boost::uint32_t m_state;
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void* m_event;
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public:
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//! Default constructor
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BOOST_LOG_API winapi_based_event();
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//! Destructor
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BOOST_LOG_API ~winapi_based_event();
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//! Waits for the object to become signalled
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BOOST_LOG_API void wait();
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//! Sets the object to a signalled state
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BOOST_LOG_API void set_signalled();
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// Copying prohibited
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BOOST_DELETED_FUNCTION(winapi_based_event(winapi_based_event const&))
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BOOST_DELETED_FUNCTION(winapi_based_event& operator= (winapi_based_event const&))
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};
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typedef winapi_based_event event;
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#else
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class generic_event
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{
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private:
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boost::mutex m_mutex;
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boost::condition_variable m_cond;
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bool m_state;
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public:
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//! Default constructor
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BOOST_LOG_API generic_event();
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//! Destructor
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BOOST_LOG_API ~generic_event();
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//! Waits for the object to become signalled
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BOOST_LOG_API void wait();
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//! Sets the object to a signalled state
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BOOST_LOG_API void set_signalled();
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// Copying prohibited
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BOOST_DELETED_FUNCTION(generic_event(generic_event const&))
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BOOST_DELETED_FUNCTION(generic_event& operator= (generic_event const&))
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};
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typedef generic_event event;
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#endif
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} // namespace aux
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BOOST_LOG_CLOSE_NAMESPACE // namespace log
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} // namespace boost
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#include <boost/log/detail/footer.hpp>
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#endif // BOOST_LOG_NO_THREADS
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#endif // BOOST_LOG_DETAIL_EVENT_HPP_INCLUDED_
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