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Diffstat (limited to 'lib/asio/handler_invoke_hook.hpp')
-rw-r--r-- | lib/asio/handler_invoke_hook.hpp | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/lib/asio/handler_invoke_hook.hpp b/lib/asio/handler_invoke_hook.hpp deleted file mode 100644 index ee618e5..0000000 --- a/lib/asio/handler_invoke_hook.hpp +++ /dev/null @@ -1,85 +0,0 @@ -// -// handler_invoke_hook.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_HANDLER_INVOKE_HOOK_HPP -#define ASIO_HANDLER_INVOKE_HOOK_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/push_options.hpp" - -namespace asio { - -/** @defgroup asio_handler_invoke asio::asio_handler_invoke - * - * @brief Default invoke function for handlers. - * - * Completion handlers for asynchronous operations are invoked by the - * io_context associated with the corresponding object (e.g. a socket or - * deadline_timer). Certain guarantees are made on when the handler may be - * invoked, in particular that a handler can only be invoked from a thread that - * is currently calling @c run() on the corresponding io_context object. - * Handlers may subsequently be invoked through other objects (such as - * io_context::strand objects) that provide additional guarantees. - * - * When asynchronous operations are composed from other asynchronous - * operations, all intermediate handlers should be invoked using the same - * method as the final handler. This is required to ensure that user-defined - * objects are not accessed in a way that may violate the guarantees. This - * hooking function ensures that the invoked method used for the final handler - * is accessible at each intermediate step. - * - * Implement asio_handler_invoke for your own handlers to specify a custom - * invocation strategy. - * - * This default implementation invokes the function object like so: - * @code function(); @endcode - * If necessary, the default implementation makes a copy of the function object - * so that the non-const operator() can be used. - * - * @par Example - * @code - * class my_handler; - * - * template <typename Function> - * void asio_handler_invoke(Function function, my_handler* context) - * { - * context->strand_.dispatch(function); - * } - * @endcode - */ -/*@{*/ - -/// Default handler invocation hook used for non-const function objects. -template <typename Function> -inline void asio_handler_invoke(Function& function, ...) -{ - function(); -} - -/// Default handler invocation hook used for const function objects. -template <typename Function> -inline void asio_handler_invoke(const Function& function, ...) -{ - Function tmp(function); - tmp(); -} - -/*@}*/ - -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#endif // ASIO_HANDLER_INVOKE_HOOK_HPP |