mirror of
https://github.com/yuzu-emu/ext-boost.git
synced 2024-12-23 08:15:32 +00:00
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
//
|
|
// detail/signal_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_SIGNAL_HANDLER_HPP
|
|
#define BOOST_ASIO_DETAIL_SIGNAL_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/bind_handler.hpp>
|
|
#include <boost/asio/detail/fenced_block.hpp>
|
|
#include <boost/asio/detail/handler_alloc_helpers.hpp>
|
|
#include <boost/asio/detail/handler_invoke_helpers.hpp>
|
|
#include <boost/asio/detail/handler_work.hpp>
|
|
#include <boost/asio/detail/memory.hpp>
|
|
#include <boost/asio/detail/signal_op.hpp>
|
|
|
|
#include <boost/asio/detail/push_options.hpp>
|
|
|
|
namespace boost {
|
|
namespace asio {
|
|
namespace detail {
|
|
|
|
template <typename Handler, typename IoExecutor>
|
|
class signal_handler : public signal_op
|
|
{
|
|
public:
|
|
BOOST_ASIO_DEFINE_HANDLER_PTR(signal_handler);
|
|
|
|
signal_handler(Handler& h, const IoExecutor& io_ex)
|
|
: signal_op(&signal_handler::do_complete),
|
|
handler_(BOOST_ASIO_MOVE_CAST(Handler)(h)),
|
|
io_executor_(io_ex)
|
|
{
|
|
handler_work<Handler, IoExecutor>::start(handler_, io_executor_);
|
|
}
|
|
|
|
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.
|
|
signal_handler* h(static_cast<signal_handler*>(base));
|
|
ptr p = { boost::asio::detail::addressof(h->handler_), h, h };
|
|
handler_work<Handler, IoExecutor> w(h->handler_, h->io_executor_);
|
|
|
|
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.
|
|
detail::binder2<Handler, boost::system::error_code, int>
|
|
handler(h->handler_, h->ec_, h->signal_number_);
|
|
p.h = boost::asio::detail::addressof(handler.handler_);
|
|
p.reset();
|
|
|
|
// Make the upcall if required.
|
|
if (owner)
|
|
{
|
|
fenced_block b(fenced_block::half);
|
|
BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
|
|
w.complete(handler, handler.handler_);
|
|
BOOST_ASIO_HANDLER_INVOCATION_END;
|
|
}
|
|
}
|
|
|
|
private:
|
|
Handler handler_;
|
|
IoExecutor io_executor_;
|
|
};
|
|
|
|
} // namespace detail
|
|
} // namespace asio
|
|
} // namespace boost
|
|
|
|
#include <boost/asio/detail/pop_options.hpp>
|
|
|
|
#endif // BOOST_ASIO_DETAIL_SIGNAL_HANDLER_HPP
|