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+//
+// thread.hpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2018 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 ASIO_THREAD_HPP
+#define ASIO_THREAD_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include "asio/detail/noncopyable.hpp"
+#include "asio/detail/thread.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+
+/// A simple abstraction for starting threads.
+/**
+ * The asio::thread class implements the smallest possible subset of the
+ * functionality of boost::thread. It is intended to be used only for starting
+ * a thread and waiting for it to exit. If more extensive threading
+ * capabilities are required, you are strongly advised to use something else.
+ *
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Unsafe.
+ *
+ * @par Example
+ * A typical use of asio::thread would be to launch a thread to run an
+ * io_context's event processing loop:
+ *
+ * @par
+ * @code asio::io_context io_context;
+ * // ...
+ * asio::thread t(boost::bind(&asio::io_context::run, &io_context));
+ * // ...
+ * t.join(); @endcode
+ */
+class thread
+ : private noncopyable
+{
+public:
+ /// Start a new thread that executes the supplied function.
+ /**
+ * This constructor creates a new thread that will execute the given function
+ * or function object.
+ *
+ * @param f The function or function object to be run in the thread. The
+ * function signature must be: @code void f(); @endcode
+ */
+ template <typename Function>
+ explicit thread(Function f)
+ : impl_(f)
+ {
+ }
+
+ /// Destructor.
+ ~thread()
+ {
+ }
+
+ /// Wait for the thread to exit.
+ /**
+ * This function will block until the thread has exited.
+ *
+ * If this function is not called before the thread object is destroyed, the
+ * thread itself will continue to run until completion. You will, however,
+ * no longer have the ability to wait for it to exit.
+ */
+ void join()
+ {
+ impl_.join();
+ }
+
+private:
+ detail::thread impl_;
+};
+
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_THREAD_HPP