mirror of
https://github.com/yuzu-emu/ext-boost.git
synced 2024-12-23 13:15:32 +00:00
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
|
//
|
||
|
|
// detail/completion_handler.hpp
|
||
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
//
|
||
|
|
// Copyright (c) 2003-2019 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_DETAIL_COMPLETION_HANDLER_HPP
|
||
|
|
#define BOOST_ASIO_DETAIL_COMPLETION_HANDLER_HPP
|
||
|
|
|
||
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
# pragma once
|
||
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
|
||
|
|
#include <boost/asio/detail/config.hpp>
|
||
|
|
#include <boost/asio/detail/fenced_block.hpp>
|
||
|
|
#include <boost/asio/detail/handler_alloc_helpers.hpp>
|
||
|
|
#include <boost/asio/detail/handler_work.hpp>
|
||
|
|
#include <boost/asio/detail/memory.hpp>
|
||
|
|
#include <boost/asio/detail/operation.hpp>
|
||
|
|
|
||
|
|
#include <boost/asio/detail/push_options.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace asio {
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
template <typename Handler>
|
||
|
|
class completion_handler : public operation
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
BOOST_ASIO_DEFINE_HANDLER_PTR(completion_handler);
|
||
|
|
|
||
|
|
completion_handler(Handler& h)
|
||
|
|
: operation(&completion_handler::do_complete),
|
||
|
|
handler_(BOOST_ASIO_MOVE_CAST(Handler)(h))
|
||
|
|
{
|
||
|
|
handler_work<Handler>::start(handler_);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void do_complete(void* owner, operation* base,
|
||
|
|
const boost::system::error_code& /*ec*/,
|
||
|
|
std::size_t /*bytes_transferred*/)
|
||
|
|
{
|
||
|
|
// Take ownership of the handler object.
|
||
|
|
completion_handler* h(static_cast<completion_handler*>(base));
|
||
|
|
ptr p = { boost::asio::detail::addressof(h->handler_), h, h };
|
||
|
|
handler_work<Handler> w(h->handler_);
|
||
|
|
|
||
|
|
BOOST_ASIO_HANDLER_COMPLETION((*h));
|
||
|
|
|
||
|
|
// Make a copy of the handler so that the memory can be deallocated before
|
||
|
|
// the upcall is made. Even if we're not about to make an upcall, a
|
||
|
|
// sub-object of the handler may be the true owner of the memory associated
|
||
|
|
// with the handler. Consequently, a local copy of the handler is required
|
||
|
|
// to ensure that any owning sub-object remains valid until after we have
|
||
|
|
// deallocated the memory here.
|
||
|
|
Handler handler(BOOST_ASIO_MOVE_CAST(Handler)(h->handler_));
|
||
|
|
p.h = boost::asio::detail::addressof(handler);
|
||
|
|
p.reset();
|
||
|
|
|
||
|
|
// Make the upcall if required.
|
||
|
|
if (owner)
|
||
|
|
{
|
||
|
|
fenced_block b(fenced_block::half);
|
||
|
|
BOOST_ASIO_HANDLER_INVOCATION_BEGIN(());
|
||
|
|
w.complete(handler, handler);
|
||
|
|
BOOST_ASIO_HANDLER_INVOCATION_END;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
Handler handler_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
} // namespace asio
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#include <boost/asio/detail/pop_options.hpp>
|
||
|
|
|
||
|
|
#endif // BOOST_ASIO_DETAIL_COMPLETION_HANDLER_HPP
|