1//
2// signal_set_service.hpp
3// ~~~~~~~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6//
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)
9//
10
11#ifndef BOOST_ASIO_SIGNAL_SET_SERVICE_HPP
12#define BOOST_ASIO_SIGNAL_SET_SERVICE_HPP
13
14#if defined(_MSC_VER) && (_MSC_VER >= 1200)
15# pragma once
16#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
17
18#include <boost/asio/detail/config.hpp>
19#include <boost/asio/async_result.hpp>
20#include <boost/asio/detail/signal_set_service.hpp>
21#include <boost/asio/error.hpp>
22#include <boost/asio/io_service.hpp>
23
24#include <boost/asio/detail/push_options.hpp>
25
26namespace boost {
27namespace asio {
28
29/// Default service implementation for a signal set.
30class signal_set_service
31#if defined(GENERATING_DOCUMENTATION)
32 : public boost::asio::io_service::service
33#else
34 : public boost::asio::detail::service_base<signal_set_service>
35#endif
36{
37public:
38#if defined(GENERATING_DOCUMENTATION)
39 /// The unique service identifier.
40 static boost::asio::io_service::id id;
41#endif
42
43public:
44 /// The type of a signal set implementation.
45#if defined(GENERATING_DOCUMENTATION)
46 typedef implementation_defined implementation_type;
47#else
48 typedef detail::signal_set_service::implementation_type implementation_type;
49#endif
50
51 /// Construct a new signal set service for the specified io_service.
52 explicit signal_set_service(boost::asio::io_service& io_service)
53 : boost::asio::detail::service_base<signal_set_service>(io_service),
54 service_impl_(io_service)
55 {
56 }
57
58 /// Construct a new signal set implementation.
59 void construct(implementation_type& impl)
60 {
61 service_impl_.construct(impl);
62 }
63
64 /// Destroy a signal set implementation.
65 void destroy(implementation_type& impl)
66 {
67 service_impl_.destroy(impl);
68 }
69
70 /// Add a signal to a signal_set.
71 boost::system::error_code add(implementation_type& impl,
72 int signal_number, boost::system::error_code& ec)
73 {
74 return service_impl_.add(impl, signal_number, ec);
75 }
76
77 /// Remove a signal to a signal_set.
78 boost::system::error_code remove(implementation_type& impl,
79 int signal_number, boost::system::error_code& ec)
80 {
81 return service_impl_.remove(impl, signal_number, ec);
82 }
83
84 /// Remove all signals from a signal_set.
85 boost::system::error_code clear(implementation_type& impl,
86 boost::system::error_code& ec)
87 {
88 return service_impl_.clear(impl, ec);
89 }
90
91 /// Cancel all operations associated with the signal set.
92 boost::system::error_code cancel(implementation_type& impl,
93 boost::system::error_code& ec)
94 {
95 return service_impl_.cancel(impl, ec);
96 }
97
98 // Start an asynchronous operation to wait for a signal to be delivered.
99 template <typename SignalHandler>
100 BOOST_ASIO_INITFN_RESULT_TYPE(SignalHandler,
101 void (boost::system::error_code, int))
102 async_wait(implementation_type& impl,
103 BOOST_ASIO_MOVE_ARG(SignalHandler) handler)
104 {
105 detail::async_result_init<
106 SignalHandler, void (boost::system::error_code, int)> init(
107 BOOST_ASIO_MOVE_CAST(SignalHandler)(handler));
108
109 service_impl_.async_wait(impl, init.handler);
110
111 return init.result.get();
112 }
113
114private:
115 // Destroy all user-defined handler objects owned by the service.
116 void shutdown_service()
117 {
118 service_impl_.shutdown_service();
119 }
120
121 // Perform any fork-related housekeeping.
122 void fork_service(boost::asio::io_service::fork_event event)
123 {
124 service_impl_.fork_service(event);
125 }
126
127 // The platform-specific implementation.
128 detail::signal_set_service service_impl_;
129};
130
131} // namespace asio
132} // namespace boost
133
134#include <boost/asio/detail/pop_options.hpp>
135
136#endif // BOOST_ASIO_SIGNAL_SET_SERVICE_HPP
137