/usr/include/boost/asio/execution
Edit: /usr/include/boost/asio/execution/operation_state.hpp (2750B)
//
// execution/operation_state.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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 BOOST_ASIO_EXECUTION_OPERATION_STATE_HPP
#define BOOST_ASIO_EXECUTION_OPERATION_STATE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include
#include
#include
#if defined(BOOST_ASIO_HAS_DEDUCED_START_FREE_TRAIT) \
&& defined(BOOST_ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
# define BOOST_ASIO_HAS_DEDUCED_EXECUTION_IS_OPERATION_STATE_TRAIT 1
#endif // defined(BOOST_ASIO_HAS_DEDUCED_START_FREE_TRAIT)
// && defined(BOOST_ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
#include
namespace boost {
namespace asio {
namespace execution {
namespace detail {
template
struct is_operation_state_base :
integral_constant::value
&& is_object::value
>
{
};
} // namespace detail
/// The is_operation_state trait detects whether a type T satisfies the
/// execution::operation_state concept.
/**
* Class template @c is_operation_state is a type trait that is derived from
* @c true_type if the type @c T meets the concept definition for an
* @c operation_state, otherwise @c false_type.
*/
template
struct is_operation_state :
#if defined(GENERATING_DOCUMENTATION)
integral_constant
#else // defined(GENERATING_DOCUMENTATION)
conditional<
can_start::type>::value
&& is_nothrow_start::type>::value,
detail::is_operation_state_base,
false_type
>::type
#endif // defined(GENERATING_DOCUMENTATION)
{
};
#if defined(BOOST_ASIO_HAS_VARIABLE_TEMPLATES)
template
BOOST_ASIO_CONSTEXPR const bool is_operation_state_v =
is_operation_state::value;
#endif // defined(BOOST_ASIO_HAS_VARIABLE_TEMPLATES)
#if defined(BOOST_ASIO_HAS_CONCEPTS)
template
BOOST_ASIO_CONCEPT operation_state = is_operation_state::value;
#define BOOST_ASIO_EXECUTION_OPERATION_STATE \
::boost::asio::execution::operation_state
#else // defined(BOOST_ASIO_HAS_CONCEPTS)
#define BOOST_ASIO_EXECUTION_OPERATION_STATE typename
#endif // defined(BOOST_ASIO_HAS_CONCEPTS)
} // namespace execution
} // namespace asio
} // namespace boost
#include
#endif // BOOST_ASIO_EXECUTION_OPERATION_STATE_HPP