annotate DEPENDENCIES/generic/include/boost/asio/handler_continuation_hook.hpp @ 133:4acb5d8d80b6 tip

Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents c530137014c0
children
rev   line source
Chris@16 1 //
Chris@16 2 // handler_continuation_hook.hpp
Chris@16 3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16 4 //
Chris@101 5 // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16 6 //
Chris@16 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16 9 //
Chris@16 10
Chris@16 11 #ifndef BOOST_ASIO_HANDLER_CONTINUATION_HOOK_HPP
Chris@16 12 #define BOOST_ASIO_HANDLER_CONTINUATION_HOOK_HPP
Chris@16 13
Chris@16 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16 15 # pragma once
Chris@16 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16 17
Chris@16 18 #include <boost/asio/detail/config.hpp>
Chris@16 19
Chris@16 20 #include <boost/asio/detail/push_options.hpp>
Chris@16 21
Chris@16 22 namespace boost {
Chris@16 23 namespace asio {
Chris@16 24
Chris@16 25 /// Default continuation function for handlers.
Chris@16 26 /**
Chris@16 27 * Asynchronous operations may represent a continuation of the asynchronous
Chris@16 28 * control flow associated with the current handler. The implementation can use
Chris@16 29 * this knowledge to optimise scheduling of the handler.
Chris@16 30 *
Chris@16 31 * Implement asio_handler_is_continuation for your own handlers to indicate
Chris@16 32 * when a handler represents a continuation.
Chris@16 33 *
Chris@16 34 * The default implementation of the continuation hook returns <tt>false</tt>.
Chris@16 35 *
Chris@16 36 * @par Example
Chris@16 37 * @code
Chris@16 38 * class my_handler;
Chris@16 39 *
Chris@16 40 * bool asio_handler_is_continuation(my_handler* context)
Chris@16 41 * {
Chris@16 42 * return true;
Chris@16 43 * }
Chris@16 44 * @endcode
Chris@16 45 */
Chris@16 46 inline bool asio_handler_is_continuation(...)
Chris@16 47 {
Chris@16 48 return false;
Chris@16 49 }
Chris@16 50
Chris@16 51 } // namespace asio
Chris@16 52 } // namespace boost
Chris@16 53
Chris@16 54 #include <boost/asio/detail/pop_options.hpp>
Chris@16 55
Chris@16 56 #endif // BOOST_ASIO_HANDLER_CONTINUATION_HOOK_HPP