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Diffstat (limited to 'lib/asio/uses_executor.hpp')
-rw-r--r-- | lib/asio/uses_executor.hpp | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/lib/asio/uses_executor.hpp b/lib/asio/uses_executor.hpp deleted file mode 100644 index e985c28..0000000 --- a/lib/asio/uses_executor.hpp +++ /dev/null @@ -1,71 +0,0 @@ -// -// uses_executor.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_USES_EXECUTOR_HPP -#define ASIO_USES_EXECUTOR_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/type_traits.hpp" - -#include "asio/detail/push_options.hpp" - -namespace asio { - -/// A special type, similar to std::nothrow_t, used to disambiguate -/// constructors that accept executor arguments. -/** - * The executor_arg_t struct is an empty structure type used as a unique type - * to disambiguate constructor and function overloading. Specifically, some - * types have constructors with executor_arg_t as the first argument, - * immediately followed by an argument of a type that satisfies the Executor - * type requirements. - */ -struct executor_arg_t -{ - /// Constructor. - ASIO_CONSTEXPR executor_arg_t() ASIO_NOEXCEPT - { - } -}; - -/// A special value, similar to std::nothrow, used to disambiguate constructors -/// that accept executor arguments. -/** - * See asio::executor_arg_t and asio::uses_executor - * for more information. - */ -#if defined(ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION) -constexpr executor_arg_t executor_arg; -#elif defined(ASIO_MSVC) -__declspec(selectany) executor_arg_t executor_arg; -#endif - -/// The uses_executor trait detects whether a type T has an associated executor -/// that is convertible from type Executor. -/** - * Meets the BinaryTypeTrait requirements. The Asio library provides a - * definition that is derived from false_type. A program may specialize this - * template to derive from true_type for a user-defined type T that can be - * constructed with an executor, where the first argument of a constructor has - * type executor_arg_t and the second argument is convertible from type - * Executor. - */ -template <typename T, typename Executor> -struct uses_executor : false_type {}; - -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#endif // ASIO_USES_EXECUTOR_HPP |