127 lines
2.9 KiB
C++
127 lines
2.9 KiB
C++
|
//
|
||
|
|
// detail/is_executor.hpp
|
||
|
|
// ~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
//
|
||
|
|
// Copyright (c) 2003-2023 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_IS_EXECUTOR_HPP
|
||
|
|
#define ASIO_DETAIL_IS_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 {
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
struct executor_memfns_base
|
||
|
|
{
|
||
|
|
void context();
|
||
|
|
void on_work_started();
|
||
|
|
void on_work_finished();
|
||
|
|
void dispatch();
|
||
|
|
void post();
|
||
|
|
void defer();
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
struct executor_memfns_derived
|
||
|
|
: T, executor_memfns_base
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename T, T>
|
||
|
|
struct executor_memfns_check
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename>
|
||
|
|
char (&context_memfn_helper(...))[2];
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
char context_memfn_helper(
|
||
|
|
executor_memfns_check<
|
||
|
|
void (executor_memfns_base::*)(),
|
||
|
|
&executor_memfns_derived<T>::context>*);
|
||
|
|
|
||
|
|
template <typename>
|
||
|
|
char (&on_work_started_memfn_helper(...))[2];
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
char on_work_started_memfn_helper(
|
||
|
|
executor_memfns_check<
|
||
|
|
void (executor_memfns_base::*)(),
|
||
|
|
&executor_memfns_derived<T>::on_work_started>*);
|
||
|
|
|
||
|
|
template <typename>
|
||
|
|
char (&on_work_finished_memfn_helper(...))[2];
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
char on_work_finished_memfn_helper(
|
||
|
|
executor_memfns_check<
|
||
|
|
void (executor_memfns_base::*)(),
|
||
|
|
&executor_memfns_derived<T>::on_work_finished>*);
|
||
|
|
|
||
|
|
template <typename>
|
||
|
|
char (&dispatch_memfn_helper(...))[2];
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
char dispatch_memfn_helper(
|
||
|
|
executor_memfns_check<
|
||
|
|
void (executor_memfns_base::*)(),
|
||
|
|
&executor_memfns_derived<T>::dispatch>*);
|
||
|
|
|
||
|
|
template <typename>
|
||
|
|
char (&post_memfn_helper(...))[2];
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
char post_memfn_helper(
|
||
|
|
executor_memfns_check<
|
||
|
|
void (executor_memfns_base::*)(),
|
||
|
|
&executor_memfns_derived<T>::post>*);
|
||
|
|
|
||
|
|
template <typename>
|
||
|
|
char (&defer_memfn_helper(...))[2];
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
char defer_memfn_helper(
|
||
|
|
executor_memfns_check<
|
||
|
|
void (executor_memfns_base::*)(),
|
||
|
|
&executor_memfns_derived<T>::defer>*);
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
struct is_executor_class
|
||
|
|
: integral_constant<bool,
|
||
|
|
sizeof(context_memfn_helper<T>(0)) != 1 &&
|
||
|
|
sizeof(on_work_started_memfn_helper<T>(0)) != 1 &&
|
||
|
|
sizeof(on_work_finished_memfn_helper<T>(0)) != 1 &&
|
||
|
|
sizeof(dispatch_memfn_helper<T>(0)) != 1 &&
|
||
|
|
sizeof(post_memfn_helper<T>(0)) != 1 &&
|
||
|
|
sizeof(defer_memfn_helper<T>(0)) != 1>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
struct is_executor
|
||
|
|
: conditional<is_class<T>::value,
|
||
|
|
is_executor_class<T>,
|
||
|
|
false_type>::type
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
} // namespace asio
|
||
|
|
|
||
|
|
#include "asio/detail/pop_options.hpp"
|
||
|
|
|
||
|
|
#endif // ASIO_DETAIL_IS_EXECUTOR_HPP
|