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146 lines
3.5 KiB
146 lines
3.5 KiB
//
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// detail/impl/resolver_service_base.ipp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
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#define ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#include "asio/detail/resolver_service_base.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail {
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class resolver_service_base::work_io_context_runner
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{
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public:
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work_io_context_runner(asio::io_context& io_context)
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: io_context_(io_context) {}
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void operator()() { io_context_.run(); }
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private:
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asio::io_context& io_context_;
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};
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resolver_service_base::resolver_service_base(
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asio::io_context& io_context)
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: io_context_impl_(asio::use_service<io_context_impl>(io_context)),
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work_io_context_(new asio::io_context),
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work_io_context_impl_(asio::use_service<
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io_context_impl>(*work_io_context_)),
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work_(asio::make_work_guard(*work_io_context_)),
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work_thread_(0)
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{
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}
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resolver_service_base::~resolver_service_base()
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{
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base_shutdown();
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}
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void resolver_service_base::base_shutdown()
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{
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work_.reset();
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if (work_io_context_.get())
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{
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work_io_context_->stop();
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if (work_thread_.get())
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{
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work_thread_->join();
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work_thread_.reset();
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}
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work_io_context_.reset();
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}
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}
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void resolver_service_base::base_notify_fork(
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asio::io_context::fork_event fork_ev)
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{
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if (work_thread_.get())
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{
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if (fork_ev == asio::io_context::fork_prepare)
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{
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work_io_context_->stop();
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work_thread_->join();
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}
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else
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{
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work_io_context_->restart();
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work_thread_.reset(new asio::detail::thread(
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work_io_context_runner(*work_io_context_)));
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}
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}
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}
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void resolver_service_base::construct(
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resolver_service_base::implementation_type& impl)
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{
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impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
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}
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void resolver_service_base::destroy(
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resolver_service_base::implementation_type& impl)
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{
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ASIO_HANDLER_OPERATION((io_context_impl_.context(),
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"resolver", &impl, 0, "cancel"));
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impl.reset();
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}
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void resolver_service_base::move_construct(implementation_type& impl,
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implementation_type& other_impl)
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{
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impl = ASIO_MOVE_CAST(implementation_type)(other_impl);
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}
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void resolver_service_base::move_assign(implementation_type& impl,
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resolver_service_base&, implementation_type& other_impl)
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{
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destroy(impl);
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impl = ASIO_MOVE_CAST(implementation_type)(other_impl);
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}
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void resolver_service_base::cancel(
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resolver_service_base::implementation_type& impl)
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{
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ASIO_HANDLER_OPERATION((io_context_impl_.context(),
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"resolver", &impl, 0, "cancel"));
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impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
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}
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void resolver_service_base::start_resolve_op(operation* op)
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{
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start_work_thread();
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io_context_impl_.work_started();
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work_io_context_impl_.post_immediate_completion(op, false);
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}
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void resolver_service_base::start_work_thread()
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{
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asio::detail::mutex::scoped_lock lock(mutex_);
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if (!work_thread_.get())
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{
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work_thread_.reset(new asio::detail::thread(
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work_io_context_runner(*work_io_context_)));
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}
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}
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} // namespace detail
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
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