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//
// detail/impl/reactive_descriptor_service.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// 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 ASIO_DETAIL_IMPL_REACTIVE_DESCRIPTOR_SERVICE_IPP
#define ASIO_DETAIL_IMPL_REACTIVE_DESCRIPTOR_SERVICE_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if !defined(ASIO_WINDOWS) \
&& !defined(ASIO_WINDOWS_RUNTIME) \
&& !defined(__CYGWIN__)
#include "asio/error.hpp"
#include "asio/detail/reactive_descriptor_service.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
reactive_descriptor_service::reactive_descriptor_service(
asio::io_context& io_context)
: service_base<reactive_descriptor_service>(io_context),
reactor_(asio::use_service<reactor>(io_context))
{
reactor_.init_task();
}
void reactive_descriptor_service::shutdown()
{
}
void reactive_descriptor_service::construct(
reactive_descriptor_service::implementation_type& impl)
{
impl.descriptor_ = -1;
impl.state_ = 0;
}
void reactive_descriptor_service::move_construct(
reactive_descriptor_service::implementation_type& impl,
reactive_descriptor_service::implementation_type& other_impl)
{
impl.descriptor_ = other_impl.descriptor_;
other_impl.descriptor_ = -1;
impl.state_ = other_impl.state_;
other_impl.state_ = 0;
reactor_.move_descriptor(impl.descriptor_,
impl.reactor_data_, other_impl.reactor_data_);
}
void reactive_descriptor_service::move_assign(
reactive_descriptor_service::implementation_type& impl,
reactive_descriptor_service& other_service,
reactive_descriptor_service::implementation_type& other_impl)
{
destroy(impl);
impl.descriptor_ = other_impl.descriptor_;
other_impl.descriptor_ = -1;
impl.state_ = other_impl.state_;
other_impl.state_ = 0;
other_service.reactor_.move_descriptor(impl.descriptor_,
impl.reactor_data_, other_impl.reactor_data_);
}
void reactive_descriptor_service::destroy(
reactive_descriptor_service::implementation_type& impl)
{
if (is_open(impl))
{
ASIO_HANDLER_OPERATION((reactor_.context(),
"descriptor", &impl, impl.descriptor_, "close"));
reactor_.deregister_descriptor(impl.descriptor_, impl.reactor_data_,
(impl.state_ & descriptor_ops::possible_dup) == 0);
asio::error_code ignored_ec;
descriptor_ops::close(impl.descriptor_, impl.state_, ignored_ec);
reactor_.cleanup_descriptor_data(impl.reactor_data_);
}
}
asio::error_code reactive_descriptor_service::assign(
reactive_descriptor_service::implementation_type& impl,
const native_handle_type& native_descriptor, asio::error_code& ec)
{
if (is_open(impl))
{
ec = asio::error::already_open;
return ec;
}
if (int err = reactor_.register_descriptor(
native_descriptor, impl.reactor_data_))
{
ec = asio::error_code(err,
asio::error::get_system_category());
return ec;
}
impl.descriptor_ = native_descriptor;
impl.state_ = descriptor_ops::possible_dup;
ec = asio::error_code();
return ec;
}
asio::error_code reactive_descriptor_service::close(
reactive_descriptor_service::implementation_type& impl,
asio::error_code& ec)
{
if (is_open(impl))
{
ASIO_HANDLER_OPERATION((reactor_.context(),
"descriptor", &impl, impl.descriptor_, "close"));
reactor_.deregister_descriptor(impl.descriptor_, impl.reactor_data_,
(impl.state_ & descriptor_ops::possible_dup) == 0);
descriptor_ops::close(impl.descriptor_, impl.state_, ec);
reactor_.cleanup_descriptor_data(impl.reactor_data_);
}
else
{
ec = asio::error_code();
}
// The descriptor is closed by the OS even if close() returns an error.
//
// (Actually, POSIX says the state of the descriptor is unspecified. On
// Linux the descriptor is apparently closed anyway; e.g. see
// http://lkml.org/lkml/2005/9/10/129
// We'll just have to assume that other OSes follow the same behaviour.)
construct(impl);
return ec;
}
reactive_descriptor_service::native_handle_type
reactive_descriptor_service::release(
reactive_descriptor_service::implementation_type& impl)
{
native_handle_type descriptor = impl.descriptor_;
if (is_open(impl))
{
ASIO_HANDLER_OPERATION((reactor_.context(),
"descriptor", &impl, impl.descriptor_, "release"));
reactor_.deregister_descriptor(impl.descriptor_, impl.reactor_data_, false);
reactor_.cleanup_descriptor_data(impl.reactor_data_);
construct(impl);
}
return descriptor;
}
asio::error_code reactive_descriptor_service::cancel(
reactive_descriptor_service::implementation_type& impl,
asio::error_code& ec)
{
if (!is_open(impl))
{
ec = asio::error::bad_descriptor;
return ec;
}
ASIO_HANDLER_OPERATION((reactor_.context(),
"descriptor", &impl, impl.descriptor_, "cancel"));
reactor_.cancel_ops(impl.descriptor_, impl.reactor_data_);
ec = asio::error_code();
return ec;
}
void reactive_descriptor_service::start_op(
reactive_descriptor_service::implementation_type& impl,
int op_type, reactor_op* op, bool is_continuation,
bool is_non_blocking, bool noop)
{
if (!noop)
{
if ((impl.state_ & descriptor_ops::non_blocking) ||
descriptor_ops::set_internal_non_blocking(
impl.descriptor_, impl.state_, true, op->ec_))
{
reactor_.start_op(op_type, impl.descriptor_,
impl.reactor_data_, op, is_continuation, is_non_blocking);
return;
}
}
reactor_.post_immediate_completion(op, is_continuation);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // !defined(ASIO_WINDOWS)
// && !defined(ASIO_WINDOWS_RUNTIME)
// && !defined(__CYGWIN__)
#endif // ASIO_DETAIL_IMPL_REACTIVE_DESCRIPTOR_SERVICE_IPP
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