Chris@16: //
Chris@16: // detail/impl/resolver_service_base.ipp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
Chris@16: #define BOOST_ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: #include <boost/asio/detail/resolver_service_base.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace detail {
Chris@16: 
Chris@16: class resolver_service_base::work_io_service_runner
Chris@16: {
Chris@16: public:
Chris@16:   work_io_service_runner(boost::asio::io_service& io_service)
Chris@16:     : io_service_(io_service) {}
Chris@16:   void operator()() { io_service_.run(); }
Chris@16: private:
Chris@16:   boost::asio::io_service& io_service_;
Chris@16: };
Chris@16: 
Chris@16: resolver_service_base::resolver_service_base(
Chris@16:     boost::asio::io_service& io_service)
Chris@16:   : io_service_impl_(boost::asio::use_service<io_service_impl>(io_service)),
Chris@16:     work_io_service_(new boost::asio::io_service),
Chris@16:     work_io_service_impl_(boost::asio::use_service<
Chris@16:         io_service_impl>(*work_io_service_)),
Chris@16:     work_(new boost::asio::io_service::work(*work_io_service_)),
Chris@16:     work_thread_(0)
Chris@16: {
Chris@16: }
Chris@16: 
Chris@16: resolver_service_base::~resolver_service_base()
Chris@16: {
Chris@16:   shutdown_service();
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::shutdown_service()
Chris@16: {
Chris@16:   work_.reset();
Chris@16:   if (work_io_service_.get())
Chris@16:   {
Chris@16:     work_io_service_->stop();
Chris@16:     if (work_thread_.get())
Chris@16:     {
Chris@16:       work_thread_->join();
Chris@16:       work_thread_.reset();
Chris@16:     }
Chris@16:     work_io_service_.reset();
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::fork_service(
Chris@16:     boost::asio::io_service::fork_event fork_ev)
Chris@16: {
Chris@16:   if (work_thread_.get())
Chris@16:   {
Chris@16:     if (fork_ev == boost::asio::io_service::fork_prepare)
Chris@16:     {
Chris@16:       work_io_service_->stop();
Chris@16:       work_thread_->join();
Chris@16:     }
Chris@16:     else
Chris@16:     {
Chris@16:       work_io_service_->reset();
Chris@16:       work_thread_.reset(new boost::asio::detail::thread(
Chris@16:             work_io_service_runner(*work_io_service_)));
Chris@16:     }
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::construct(
Chris@16:     resolver_service_base::implementation_type& impl)
Chris@16: {
Chris@16:   impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::destroy(
Chris@16:     resolver_service_base::implementation_type& impl)
Chris@16: {
Chris@16:   BOOST_ASIO_HANDLER_OPERATION(("resolver", &impl, "cancel"));
Chris@16: 
Chris@16:   impl.reset();
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::cancel(
Chris@16:     resolver_service_base::implementation_type& impl)
Chris@16: {
Chris@16:   BOOST_ASIO_HANDLER_OPERATION(("resolver", &impl, "cancel"));
Chris@16: 
Chris@16:   impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::start_resolve_op(operation* op)
Chris@16: {
Chris@16:   start_work_thread();
Chris@16:   io_service_impl_.work_started();
Chris@16:   work_io_service_impl_.post_immediate_completion(op, false);
Chris@16: }
Chris@16: 
Chris@16: void resolver_service_base::start_work_thread()
Chris@16: {
Chris@16:   boost::asio::detail::mutex::scoped_lock lock(mutex_);
Chris@16:   if (!work_thread_.get())
Chris@16:   {
Chris@16:     work_thread_.reset(new boost::asio::detail::thread(
Chris@16:           work_io_service_runner(*work_io_service_)));
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP