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//
// impl/system_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 BOOST_ASIO_IMPL_SYSTEM_EXECUTOR_HPP
#define BOOST_ASIO_IMPL_SYSTEM_EXECUTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/executor_op.hpp>
#include <boost/asio/detail/global.hpp>
#include <boost/asio/detail/recycling_allocator.hpp>
#include <boost/asio/detail/type_traits.hpp>
#include <boost/asio/system_context.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
inline system_context& system_executor::context() const BOOST_ASIO_NOEXCEPT
{
return detail::global<system_context>();
}
template <typename Function, typename Allocator>
void system_executor::dispatch(
BOOST_ASIO_MOVE_ARG(Function) f, const Allocator&) const
{
typename decay<Function>::type tmp(BOOST_ASIO_MOVE_CAST(Function)(f));
boost_asio_handler_invoke_helpers::invoke(tmp, tmp);
}
template <typename Function, typename Allocator>
void system_executor::post(
BOOST_ASIO_MOVE_ARG(Function) f, const Allocator& a) const
{
typedef typename decay<Function>::type function_type;
system_context& ctx = detail::global<system_context>();
// Allocate and construct an operation to wrap the function.
typedef detail::executor_op<function_type, Allocator> op;
typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
p.p = new (p.v) op(BOOST_ASIO_MOVE_CAST(Function)(f), a);
BOOST_ASIO_HANDLER_CREATION((ctx, *p.p,
"system_executor", &this->context(), 0, "post"));
ctx.scheduler_.post_immediate_completion(p.p, false);
p.v = p.p = 0;
}
template <typename Function, typename Allocator>
void system_executor::defer(
BOOST_ASIO_MOVE_ARG(Function) f, const Allocator& a) const
{
typedef typename decay<Function>::type function_type;
system_context& ctx = detail::global<system_context>();
// Allocate and construct an operation to wrap the function.
typedef detail::executor_op<function_type, Allocator> op;
typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
p.p = new (p.v) op(BOOST_ASIO_MOVE_CAST(Function)(f), a);
BOOST_ASIO_HANDLER_CREATION((ctx, *p.p,
"system_executor", &this->context(), 0, "defer"));
ctx.scheduler_.post_immediate_completion(p.p, true);
p.v = p.p = 0;
}
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_IMPL_SYSTEM_EXECUTOR_HPP
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