1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
//
// detail/service_registry.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2012 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_SERVICE_REGISTRY_HPP
#define BOOST_ASIO_DETAIL_SERVICE_REGISTRY_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#include <typeinfo>
#include <boost/asio/detail/mutex.hpp>
#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/io_service.hpp>
#if defined(BOOST_NO_TYPEID)
# if !defined(BOOST_ASIO_NO_TYPEID)
# define BOOST_ASIO_NO_TYPEID
# endif // !defined(BOOST_ASIO_NO_TYPEID)
#endif // defined(BOOST_NO_TYPEID)
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace detail {
#if defined(__GNUC__)
# if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
# pragma GCC visibility push (default)
# endif // (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
#endif // defined(__GNUC__)
template <typename T>
class typeid_wrapper {};
#if defined(__GNUC__)
# if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
# pragma GCC visibility pop
# endif // (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
#endif // defined(__GNUC__)
class service_registry
: private noncopyable
{
public:
// Constructor. Adds the initial service.
template <typename Service, typename Arg>
service_registry(boost::asio::io_service& o,
Service* initial_service, Arg arg);
// Destructor.
BOOST_ASIO_DECL ~service_registry();
// Notify all services of a fork event.
BOOST_ASIO_DECL void notify_fork(boost::asio::io_service::fork_event fork_ev);
// Get the first service object cast to the specified type. Called during
// io_service construction and so performs no locking or type checking.
template <typename Service>
Service& first_service();
// Get the service object corresponding to the specified service type. Will
// create a new service object automatically if no such object already
// exists. Ownership of the service object is not transferred to the caller.
template <typename Service>
Service& use_service();
// Add a service object. Throws on error, in which case ownership of the
// object is retained by the caller.
template <typename Service>
void add_service(Service* new_service);
// Check whether a service object of the specified type already exists.
template <typename Service>
bool has_service() const;
private:
// Initialise a service's key based on its id.
BOOST_ASIO_DECL static void init_key(
boost::asio::io_service::service::key& key,
const boost::asio::io_service::id& id);
#if !defined(BOOST_ASIO_NO_TYPEID)
// Initialise a service's key based on its id.
template <typename Service>
static void init_key(boost::asio::io_service::service::key& key,
const boost::asio::detail::service_id<Service>& /*id*/);
#endif // !defined(BOOST_ASIO_NO_TYPEID)
// Check if a service matches the given id.
BOOST_ASIO_DECL static bool keys_match(
const boost::asio::io_service::service::key& key1,
const boost::asio::io_service::service::key& key2);
// The type of a factory function used for creating a service instance.
typedef boost::asio::io_service::service*
(*factory_type)(boost::asio::io_service&);
// Factory function for creating a service instance.
template <typename Service>
static boost::asio::io_service::service* create(
boost::asio::io_service& owner);
// Destroy a service instance.
BOOST_ASIO_DECL static void destroy(
boost::asio::io_service::service* service);
// Helper class to manage service pointers.
struct auto_service_ptr;
friend struct auto_service_ptr;
struct auto_service_ptr
{
boost::asio::io_service::service* ptr_;
~auto_service_ptr() { destroy(ptr_); }
};
// Get the service object corresponding to the specified service key. Will
// create a new service object automatically if no such object already
// exists. Ownership of the service object is not transferred to the caller.
BOOST_ASIO_DECL boost::asio::io_service::service* do_use_service(
const boost::asio::io_service::service::key& key,
factory_type factory);
// Add a service object. Throws on error, in which case ownership of the
// object is retained by the caller.
BOOST_ASIO_DECL void do_add_service(
const boost::asio::io_service::service::key& key,
boost::asio::io_service::service* new_service);
// Check whether a service object with the specified key already exists.
BOOST_ASIO_DECL bool do_has_service(
const boost::asio::io_service::service::key& key) const;
// Mutex to protect access to internal data.
mutable boost::asio::detail::mutex mutex_;
// The owner of this service registry and the services it contains.
boost::asio::io_service& owner_;
// The first service in the list of contained services.
boost::asio::io_service::service* first_service_;
};
} // namespace detail
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#include <boost/asio/detail/impl/service_registry.hpp>
#if defined(BOOST_ASIO_HEADER_ONLY)
# include <boost/asio/detail/impl/service_registry.ipp>
#endif // defined(BOOST_ASIO_HEADER_ONLY)
#endif // BOOST_ASIO_DETAIL_SERVICE_REGISTRY_HPP
|
