--- /dev/null
+//
+// detail/impl/io_uring_descriptor_service.ipp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2022 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_IMPL_IO_URING_DESCRIPTOR_SERVICE_IPP
+#define BOOST_ASIO_DETAIL_IMPL_IO_URING_DESCRIPTOR_SERVICE_IPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+
+#if defined(BOOST_ASIO_HAS_IO_URING)
+
+#include <boost/asio/error.hpp>
+#include <boost/asio/detail/io_uring_descriptor_service.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+io_uring_descriptor_service::io_uring_descriptor_service(
+ execution_context& context)
+ : execution_context_service_base<io_uring_descriptor_service>(context),
+ io_uring_service_(boost::asio::use_service<io_uring_service>(context))
+{
+ io_uring_service_.init_task();
+}
+
+void io_uring_descriptor_service::shutdown()
+{
+}
+
+void io_uring_descriptor_service::construct(
+ io_uring_descriptor_service::implementation_type& impl)
+{
+ impl.descriptor_ = -1;
+ impl.state_ = 0;
+ impl.io_object_data_ = 0;
+}
+
+void io_uring_descriptor_service::move_construct(
+ io_uring_descriptor_service::implementation_type& impl,
+ io_uring_descriptor_service::implementation_type& other_impl)
+ BOOST_ASIO_NOEXCEPT
+{
+ impl.descriptor_ = other_impl.descriptor_;
+ other_impl.descriptor_ = -1;
+
+ impl.state_ = other_impl.state_;
+ other_impl.state_ = 0;
+
+ impl.io_object_data_ = other_impl.io_object_data_;
+ other_impl.io_object_data_ = 0;
+}
+
+void io_uring_descriptor_service::move_assign(
+ io_uring_descriptor_service::implementation_type& impl,
+ io_uring_descriptor_service& /*other_service*/,
+ io_uring_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;
+
+ impl.io_object_data_ = other_impl.io_object_data_;
+ other_impl.io_object_data_ = 0;
+}
+
+void io_uring_descriptor_service::destroy(
+ io_uring_descriptor_service::implementation_type& impl)
+{
+ if (is_open(impl))
+ {
+ BOOST_ASIO_HANDLER_OPERATION((io_uring_service_.context(),
+ "descriptor", &impl, impl.descriptor_, "close"));
+
+ io_uring_service_.deregister_io_object(impl.io_object_data_);
+ boost::system::error_code ignored_ec;
+ descriptor_ops::close(impl.descriptor_, impl.state_, ignored_ec);
+ io_uring_service_.cleanup_io_object(impl.io_object_data_);
+ }
+}
+
+boost::system::error_code io_uring_descriptor_service::assign(
+ io_uring_descriptor_service::implementation_type& impl,
+ const native_handle_type& native_descriptor, boost::system::error_code& ec)
+{
+ if (is_open(impl))
+ {
+ ec = boost::asio::error::already_open;
+ return ec;
+ }
+
+ io_uring_service_.register_io_object(impl.io_object_data_);
+
+ impl.descriptor_ = native_descriptor;
+ impl.state_ = descriptor_ops::possible_dup;
+ ec = success_ec_;
+ return ec;
+}
+
+boost::system::error_code io_uring_descriptor_service::close(
+ io_uring_descriptor_service::implementation_type& impl,
+ boost::system::error_code& ec)
+{
+ if (is_open(impl))
+ {
+ BOOST_ASIO_HANDLER_OPERATION((io_uring_service_.context(),
+ "descriptor", &impl, impl.descriptor_, "close"));
+
+ io_uring_service_.deregister_io_object(impl.io_object_data_);
+ descriptor_ops::close(impl.descriptor_, impl.state_, ec);
+ io_uring_service_.cleanup_io_object(impl.io_object_data_);
+ }
+ else
+ {
+ ec = success_ec_;
+ }
+
+ // 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
+ construct(impl);
+
+ return ec;
+}
+
+io_uring_descriptor_service::native_handle_type
+io_uring_descriptor_service::release(
+ io_uring_descriptor_service::implementation_type& impl)
+{
+ native_handle_type descriptor = impl.descriptor_;
+
+ if (is_open(impl))
+ {
+ BOOST_ASIO_HANDLER_OPERATION((io_uring_service_.context(),
+ "descriptor", &impl, impl.descriptor_, "release"));
+
+ io_uring_service_.deregister_io_object(impl.io_object_data_);
+ io_uring_service_.cleanup_io_object(impl.io_object_data_);
+ construct(impl);
+ }
+
+ return descriptor;
+}
+
+boost::system::error_code io_uring_descriptor_service::cancel(
+ io_uring_descriptor_service::implementation_type& impl,
+ boost::system::error_code& ec)
+{
+ if (!is_open(impl))
+ {
+ ec = boost::asio::error::bad_descriptor;
+ return ec;
+ }
+
+ BOOST_ASIO_HANDLER_OPERATION((io_uring_service_.context(),
+ "descriptor", &impl, impl.descriptor_, "cancel"));
+
+ io_uring_service_.cancel_ops(impl.io_object_data_);
+ ec = success_ec_;
+ return ec;
+}
+
+void io_uring_descriptor_service::start_op(
+ io_uring_descriptor_service::implementation_type& impl,
+ int op_type, io_uring_operation* op, bool is_continuation, bool noop)
+{
+ if (!noop)
+ {
+ io_uring_service_.start_op(op_type,
+ impl.io_object_data_, op, is_continuation);
+ }
+ else
+ {
+ io_uring_service_.post_immediate_completion(op, is_continuation);
+ }
+}
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // defined(BOOST_ASIO_HAS_IO_URING)
+
+#endif // BOOST_ASIO_DETAIL_IMPL_IO_URING_DESCRIPTOR_SERVICE_IPP
projects / ceph.git / blobdiff