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-rw-r--r--lib/asio/detail/handler_work.hpp95
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diff --git a/lib/asio/detail/handler_work.hpp b/lib/asio/detail/handler_work.hpp
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-//
-// detail/handler_work.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_DETAIL_HANDLER_WORK_HPP
-#define ASIO_DETAIL_HANDLER_WORK_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-// A helper class template to allow completion handlers to be dispatched
-// through either the new executors framework or the old invocaton hook. The
-// primary template uses the new executors framework.
-template <typename Handler, typename Executor
- = typename associated_executor<Handler>::type>
-class handler_work
-{
-public:
- explicit handler_work(Handler& handler) ASIO_NOEXCEPT
- : executor_(associated_executor<Handler>::get(handler))
- {
- }
-
- static void start(Handler& handler) ASIO_NOEXCEPT
- {
- Executor ex(associated_executor<Handler>::get(handler));
- ex.on_work_started();
- }
-
- ~handler_work()
- {
- executor_.on_work_finished();
- }
-
- template <typename Function>
- void complete(Function& function, Handler& handler)
- {
- executor_.dispatch(ASIO_MOVE_CAST(Function)(function),
- associated_allocator<Handler>::get(handler));
- }
-
-private:
- // Disallow copying and assignment.
- handler_work(const handler_work&);
- handler_work& operator=(const handler_work&);
-
- typename associated_executor<Handler>::type executor_;
-};
-
-// This specialisation dispatches a handler through the old invocation hook.
-// The specialisation is not strictly required for correctness, as the
-// system_executor will dispatch through the hook anyway. However, by doing
-// this we avoid an extra copy of the handler.
-template <typename Handler>
-class handler_work<Handler, system_executor>
-{
-public:
- explicit handler_work(Handler&) ASIO_NOEXCEPT {}
- static void start(Handler&) ASIO_NOEXCEPT {}
- ~handler_work() {}
-
- template <typename Function>
- void complete(Function& function, Handler& handler)
- {
- asio_handler_invoke_helpers::invoke(function, handler);
- }
-
-private:
- // Disallow copying and assignment.
- handler_work(const handler_work&);
- handler_work& operator=(const handler_work&);
-};
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_HANDLER_WORK_HPP