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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
commit0aa6201a490bfabc0ae021ceb9f1fb0f46727c5d (patch)
treea71d934d8151dd43e7c16555fef17fd749c5da70 /lib/asio/detail/impl/reactive_descriptor_service.ipp
parent558d74bffd9f069955af52c0b308a1d6169bcff0 (diff)
parent0330221d51421caa110b8c5dcb567cc3d0620eb9 (diff)
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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