149 lines
3.9 KiB
C++
149 lines
3.9 KiB
C++
//
|
|
// experimental/detail/channel_send_op.hpp
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
// Copyright (c) 2003-2023 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 ASIO_EXPERIMENTAL_DETAIL_CHANNEL_SEND_OP_HPP
|
|
#define ASIO_EXPERIMENTAL_DETAIL_CHANNEL_SEND_OP_HPP
|
|
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
# pragma once
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
|
|
#include "asio/detail/config.hpp"
|
|
#include "asio/detail/bind_handler.hpp"
|
|
#include "asio/detail/handler_alloc_helpers.hpp"
|
|
#include "asio/error.hpp"
|
|
#include "asio/experimental/channel_error.hpp"
|
|
#include "asio/experimental/detail/channel_operation.hpp"
|
|
#include "asio/experimental/detail/channel_payload.hpp"
|
|
|
|
#include "asio/detail/push_options.hpp"
|
|
|
|
namespace asio {
|
|
namespace experimental {
|
|
namespace detail {
|
|
|
|
template <typename Payload>
|
|
class channel_send : public channel_operation
|
|
{
|
|
public:
|
|
Payload get_payload()
|
|
{
|
|
return ASIO_MOVE_CAST(Payload)(payload_);
|
|
}
|
|
|
|
void immediate()
|
|
{
|
|
func_(this, immediate_op, 0);
|
|
}
|
|
|
|
void complete()
|
|
{
|
|
func_(this, complete_op, 0);
|
|
}
|
|
|
|
void cancel()
|
|
{
|
|
func_(this, cancel_op, 0);
|
|
}
|
|
|
|
void close()
|
|
{
|
|
func_(this, close_op, 0);
|
|
}
|
|
|
|
protected:
|
|
channel_send(func_type func, ASIO_MOVE_ARG(Payload) payload)
|
|
: channel_operation(func),
|
|
payload_(ASIO_MOVE_CAST(Payload)(payload))
|
|
{
|
|
}
|
|
|
|
private:
|
|
Payload payload_;
|
|
};
|
|
|
|
template <typename Payload, typename Handler, typename IoExecutor>
|
|
class channel_send_op : public channel_send<Payload>
|
|
{
|
|
public:
|
|
ASIO_DEFINE_HANDLER_PTR(channel_send_op);
|
|
|
|
channel_send_op(ASIO_MOVE_ARG(Payload) payload,
|
|
Handler& handler, const IoExecutor& io_ex)
|
|
: channel_send<Payload>(&channel_send_op::do_action,
|
|
ASIO_MOVE_CAST(Payload)(payload)),
|
|
handler_(ASIO_MOVE_CAST(Handler)(handler)),
|
|
work_(handler_, io_ex)
|
|
{
|
|
}
|
|
|
|
static void do_action(channel_operation* base,
|
|
channel_operation::action a, void*)
|
|
{
|
|
// Take ownership of the operation object.
|
|
channel_send_op* o(static_cast<channel_send_op*>(base));
|
|
ptr p = { asio::detail::addressof(o->handler_), o, o };
|
|
|
|
ASIO_HANDLER_COMPLETION((*o));
|
|
|
|
// Take ownership of the operation's outstanding work.
|
|
channel_operation::handler_work<Handler, IoExecutor> w(
|
|
ASIO_MOVE_CAST2(channel_operation::handler_work<
|
|
Handler, IoExecutor>)(o->work_));
|
|
|
|
asio::error_code ec;
|
|
switch (a)
|
|
{
|
|
case channel_operation::cancel_op:
|
|
ec = error::channel_cancelled;
|
|
break;
|
|
case channel_operation::close_op:
|
|
ec = error::channel_closed;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// Make a copy of the handler so that the memory can be deallocated before
|
|
// the handler is posted. Even if we're not about to post the handler, 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.
|
|
asio::detail::binder1<Handler, asio::error_code>
|
|
handler(o->handler_, ec);
|
|
p.h = asio::detail::addressof(handler.handler_);
|
|
p.reset();
|
|
|
|
// Post the completion if required.
|
|
if (a != channel_operation::destroy_op)
|
|
{
|
|
ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_));
|
|
if (a == channel_operation::immediate_op)
|
|
w.immediate(handler, handler.handler_, 0);
|
|
else
|
|
w.complete(handler, handler.handler_);
|
|
ASIO_HANDLER_INVOCATION_END;
|
|
}
|
|
}
|
|
|
|
private:
|
|
Handler handler_;
|
|
channel_operation::handler_work<Handler, IoExecutor> work_;
|
|
};
|
|
|
|
} // namespace detail
|
|
} // namespace experimental
|
|
} // namespace asio
|
|
|
|
#include "asio/detail/pop_options.hpp"
|
|
|
|
#endif // ASIO_EXPERIMENTAL_DETAIL_CHANNEL_SEND_OP_HPP
|