2 // detail/impl/resolver_service_base.ipp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
11 #ifndef BOOST_ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
12 #define BOOST_ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
18 #include <boost/asio/detail/config.hpp>
19 #include <boost/asio/detail/resolver_service_base.hpp>
21 #include <boost/asio/detail/push_options.hpp>
27 class resolver_service_base::work_io_service_runner
30 work_io_service_runner(boost::asio::io_service& io_service)
31 : io_service_(io_service) {}
32 void operator()() { io_service_.run(); }
34 boost::asio::io_service& io_service_;
37 resolver_service_base::resolver_service_base(
38 boost::asio::io_service& io_service)
39 : io_service_impl_(boost::asio::use_service<io_service_impl>(io_service)),
40 work_io_service_(new boost::asio::io_service),
41 work_io_service_impl_(boost::asio::use_service<
42 io_service_impl>(*work_io_service_)),
43 work_(new boost::asio::io_service::work(*work_io_service_)),
48 resolver_service_base::~resolver_service_base()
53 void resolver_service_base::shutdown_service()
56 if (work_io_service_.get())
58 work_io_service_->stop();
59 if (work_thread_.get())
64 work_io_service_.reset();
68 void resolver_service_base::fork_service(
69 boost::asio::io_service::fork_event fork_ev)
71 if (work_thread_.get())
73 if (fork_ev == boost::asio::io_service::fork_prepare)
75 work_io_service_->stop();
80 work_io_service_->reset();
81 work_thread_.reset(new boost::asio::detail::thread(
82 work_io_service_runner(*work_io_service_)));
87 void resolver_service_base::construct(
88 resolver_service_base::implementation_type& impl)
90 impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
93 void resolver_service_base::destroy(
94 resolver_service_base::implementation_type& impl)
96 BOOST_ASIO_HANDLER_OPERATION(("resolver", &impl, "cancel"));
101 void resolver_service_base::cancel(
102 resolver_service_base::implementation_type& impl)
104 BOOST_ASIO_HANDLER_OPERATION(("resolver", &impl, "cancel"));
106 impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
109 void resolver_service_base::start_resolve_op(operation* op)
112 io_service_impl_.work_started();
113 work_io_service_impl_.post_immediate_completion(op, false);
116 void resolver_service_base::start_work_thread()
118 boost::asio::detail::mutex::scoped_lock lock(mutex_);
119 if (!work_thread_.get())
121 work_thread_.reset(new boost::asio::detail::thread(
122 work_io_service_runner(*work_io_service_)));
126 } // namespace detail
130 #include <boost/asio/detail/pop_options.hpp>
132 #endif // BOOST_ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP