93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
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//
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// thread.hpp
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// ~~~~~~~~~~
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//
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// Copyright (c) 2003-2018 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_THREAD_HPP
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#define ASIO_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/config.hpp"
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#include "asio/detail/noncopyable.hpp"
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#include "asio/detail/thread.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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/// A simple abstraction for starting threads.
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/**
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* The asio::thread class implements the smallest possible subset of the
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* functionality of boost::thread. It is intended to be used only for starting
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* a thread and waiting for it to exit. If more extensive threading
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* capabilities are required, you are strongly advised to use something else.
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*
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* @par Thread Safety
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* @e Distinct @e objects: Safe.@n
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* @e Shared @e objects: Unsafe.
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*
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* @par Example
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* A typical use of asio::thread would be to launch a thread to run an
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* io_context's event processing loop:
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*
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* @par
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* @code asio::io_context io_context;
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* // ...
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* asio::thread t(boost::bind(&asio::io_context::run, &io_context));
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* // ...
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* t.join(); @endcode
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*/
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class thread
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: private noncopyable
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{
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public:
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/// Start a new thread that executes the supplied function.
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/**
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* This constructor creates a new thread that will execute the given function
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* or function object.
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*
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* @param f The function or function object to be run in the thread. The
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* function signature must be: @code void f(); @endcode
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*/
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template <typename Function>
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explicit thread(Function f)
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: impl_(f)
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{
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}
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/// Destructor.
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~thread()
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{
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}
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/// Wait for the thread to exit.
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/**
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* This function will block until the thread has exited.
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*
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* If this function is not called before the thread object is destroyed, the
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* thread itself will continue to run until completion. You will, however,
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* no longer have the ability to wait for it to exit.
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*/
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void join()
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{
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impl_.join();
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}
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private:
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detail::thread impl_;
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};
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_THREAD_HPP
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