126 lines
2.4 KiB
C++
126 lines
2.4 KiB
C++
//
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// posix_thread.hpp
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// ~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2006 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_POSIX_THREAD_HPP
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#define ASIO_DETAIL_POSIX_THREAD_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/push_options.hpp"
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#include "asio/detail/push_options.hpp"
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#include <boost/config.hpp>
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#include "asio/detail/pop_options.hpp"
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#if defined(BOOST_HAS_PTHREADS)
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#include "asio/detail/push_options.hpp"
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#include <memory>
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#include <boost/throw_exception.hpp>
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#include <pthread.h>
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#include "asio/detail/pop_options.hpp"
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#include "asio/system_exception.hpp"
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#include "asio/detail/noncopyable.hpp"
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namespace asio {
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namespace detail {
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extern "C" void* asio_detail_posix_thread_function(void* arg);
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class posix_thread
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: private noncopyable
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{
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public:
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// Constructor.
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template <typename Function>
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posix_thread(Function f)
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: joined_(false)
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{
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std::auto_ptr<func_base> arg(new func<Function>(f));
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int error = ::pthread_create(&thread_, 0,
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asio_detail_posix_thread_function, arg.get());
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if (error != 0)
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{
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system_exception e("thread", error);
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boost::throw_exception(e);
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}
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arg.release();
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}
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// Destructor.
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~posix_thread()
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{
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if (!joined_)
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::pthread_detach(thread_);
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}
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// Wait for the thread to exit.
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void join()
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{
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if (!joined_)
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{
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::pthread_join(thread_, 0);
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joined_ = true;
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}
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}
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private:
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friend void* asio_detail_posix_thread_function(void* arg);
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class func_base
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{
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public:
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virtual ~func_base() {}
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virtual void run() = 0;
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};
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template <typename Function>
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class func
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: public func_base
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{
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public:
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func(Function f)
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: f_(f)
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{
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}
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virtual void run()
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{
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f_();
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}
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private:
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Function f_;
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};
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::pthread_t thread_;
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bool joined_;
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};
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inline void* asio_detail_posix_thread_function(void* arg)
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{
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std::auto_ptr<posix_thread::func_base> f(
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static_cast<posix_thread::func_base*>(arg));
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f->run();
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return 0;
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}
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} // namespace detail
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} // namespace asio
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#endif // defined(BOOST_HAS_PTHREADS)
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_DETAIL_POSIX_THREAD_HPP
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