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author | DongHun Kwak <dh0128.kwak@samsung.com> | 2019-12-05 15:11:01 +0900 |
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committer | DongHun Kwak <dh0128.kwak@samsung.com> | 2019-12-05 15:11:01 +0900 |
commit | 3fdc3e5ee96dca5b11d1694975a65200787eab86 (patch) | |
tree | 5c1733853892b8397d67706fa453a9bd978d2102 /boost/asio/detail/reactive_wait_op.hpp | |
parent | 88e602c57797660ebe0f9e15dbd64c1ff16dead3 (diff) | |
download | boost-3fdc3e5ee96dca5b11d1694975a65200787eab86.tar.gz boost-3fdc3e5ee96dca5b11d1694975a65200787eab86.tar.bz2 boost-3fdc3e5ee96dca5b11d1694975a65200787eab86.zip |
Imported Upstream version 1.66.0upstream/1.66.0
Diffstat (limited to 'boost/asio/detail/reactive_wait_op.hpp')
-rw-r--r-- | boost/asio/detail/reactive_wait_op.hpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/boost/asio/detail/reactive_wait_op.hpp b/boost/asio/detail/reactive_wait_op.hpp new file mode 100644 index 0000000000..9bc4e2c1c5 --- /dev/null +++ b/boost/asio/detail/reactive_wait_op.hpp @@ -0,0 +1,92 @@ +// +// detail/reactive_wait_op.hpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2017 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_REACTIVE_WAIT_OP_HPP +#define BOOST_ASIO_DETAIL_REACTIVE_WAIT_OP_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_invoke_helpers.hpp> +#include <boost/asio/detail/memory.hpp> +#include <boost/asio/detail/reactor_op.hpp> + +#include <boost/asio/detail/push_options.hpp> + +namespace boost { +namespace asio { +namespace detail { + +template <typename Handler> +class reactive_wait_op : public reactor_op +{ +public: + BOOST_ASIO_DEFINE_HANDLER_PTR(reactive_wait_op); + + reactive_wait_op(Handler& handler) + : reactor_op(&reactive_wait_op::do_perform, + &reactive_wait_op::do_complete), + handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler)) + { + handler_work<Handler>::start(handler_); + } + + static status do_perform(reactor_op*) + { + return done; + } + + 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. + reactive_wait_op* o(static_cast<reactive_wait_op*>(base)); + ptr p = { boost::asio::detail::addressof(o->handler_), o, o }; + handler_work<Handler> w(o->handler_); + + BOOST_ASIO_HANDLER_COMPLETION((*o)); + + // 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::binder1<Handler, boost::system::error_code> + handler(o->handler_, o->ec_); + 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_)); + w.complete(handler, 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_REACTIVE_WAIT_OP_HPP |