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1 | // Boost.Signals library |
2 | ||
3 | // Copyright Douglas Gregor 2001-2004. Use, modification and | |
4 | // distribution is subject to the Boost Software License, Version | |
5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | ||
8 | // For more information, see http://www.boost.org | |
9 | ||
10 | #define BOOST_SIGNALS_SOURCE | |
11 | ||
12 | #include <boost/signals/connection.hpp> | |
13 | #include <cassert> | |
14 | ||
15 | namespace boost { | |
16 | namespace BOOST_SIGNALS_NAMESPACE { | |
17 | ||
18 | connection::connection(const connection& other) : | |
19 | con(other.con), controlling_connection(other.controlling_connection) | |
20 | { | |
21 | } | |
22 | ||
23 | connection::~connection() | |
24 | { | |
25 | if (controlling_connection) { | |
26 | disconnect(); | |
27 | } | |
28 | } | |
29 | ||
30 | void | |
31 | connection::reset(BOOST_SIGNALS_NAMESPACE::detail::basic_connection* new_con) | |
32 | { | |
33 | con.reset(new_con); | |
34 | } | |
35 | ||
36 | bool connection::operator==(const connection& other) const | |
37 | { | |
38 | return con.get() == other.con.get(); | |
39 | } | |
40 | ||
41 | bool connection::operator<(const connection& other) const | |
42 | { | |
43 | return con.get() < other.con.get(); | |
44 | } | |
45 | ||
46 | connection& connection::operator=(const connection& other) | |
47 | { | |
48 | connection(other).swap(*this); | |
49 | return *this; | |
50 | } | |
51 | ||
52 | void connection::swap(connection& other) | |
53 | { | |
54 | this->con.swap(other.con); | |
55 | std::swap(this->controlling_connection, other.controlling_connection); | |
56 | } | |
57 | ||
58 | void swap(connection& c1, connection& c2) | |
59 | { | |
60 | c1.swap(c2); | |
61 | } | |
62 | ||
63 | scoped_connection::scoped_connection(const connection& other) : | |
64 | connection(other), | |
65 | released(false) | |
66 | { | |
67 | } | |
68 | ||
69 | scoped_connection::scoped_connection(const scoped_connection& other) : | |
70 | connection(other), | |
71 | released(other.released) | |
72 | { | |
73 | } | |
74 | ||
75 | scoped_connection::~scoped_connection() | |
76 | { | |
77 | if (!released) { | |
78 | this->disconnect(); | |
79 | } | |
80 | } | |
81 | ||
82 | connection scoped_connection::release() | |
83 | { | |
84 | released = true; | |
85 | return *this; | |
86 | } | |
87 | ||
88 | void scoped_connection::swap(scoped_connection& other) | |
89 | { | |
90 | this->connection::swap(other); | |
91 | bool other_released = other.released; | |
92 | other.released = this->released; | |
93 | this->released = other_released; | |
94 | } | |
95 | ||
96 | void swap(scoped_connection& c1, scoped_connection& c2) | |
97 | { | |
98 | c1.swap(c2); | |
99 | } | |
100 | ||
101 | scoped_connection& | |
102 | scoped_connection::operator=(const connection& other) | |
103 | { | |
104 | scoped_connection(other).swap(*this); | |
105 | return *this; | |
106 | } | |
107 | ||
108 | scoped_connection& | |
109 | scoped_connection::operator=(const scoped_connection& other) | |
110 | { | |
111 | scoped_connection(other).swap(*this); | |
112 | return *this; | |
113 | } | |
114 | ||
115 | void | |
116 | connection::add_bound_object(const BOOST_SIGNALS_NAMESPACE::detail::bound_object& b) | |
117 | { | |
118 | assert(con.get() != 0); | |
119 | con->bound_objects.push_back(b); | |
120 | } | |
121 | ||
122 | ||
123 | void connection::disconnect() const | |
124 | { | |
125 | if (this->connected()) { | |
126 | // Make sure we have a reference to the basic_connection object, | |
127 | // because 'this' may disappear | |
128 | shared_ptr<detail::basic_connection> local_con = con; | |
129 | ||
130 | void (*signal_disconnect)(void*, void*) = local_con->signal_disconnect; | |
131 | ||
132 | // Note that this connection no longer exists | |
133 | // Order is important here: we could get into an infinite loop if this | |
134 | // isn't cleared before we try the disconnect. | |
135 | local_con->signal_disconnect = 0; | |
136 | ||
137 | // Disconnect signal | |
138 | signal_disconnect(local_con->signal, local_con->signal_data); | |
139 | ||
140 | // Disconnect all bound objects | |
141 | typedef std::list<BOOST_SIGNALS_NAMESPACE::detail::bound_object>::iterator iterator; | |
142 | for (iterator i = local_con->bound_objects.begin(); | |
143 | i != local_con->bound_objects.end(); ++i) { | |
144 | assert(i->disconnect != 0); | |
145 | i->disconnect(i->obj, i->data); | |
146 | } | |
147 | } | |
148 | } | |
149 | } // end namespace boost | |
150 | } // end namespace boost | |
151 | ||
152 | #ifndef BOOST_MSVC | |
153 | // Explicit instantiations to keep everything in the library | |
154 | template class std::list<boost::BOOST_SIGNALS_NAMESPACE::detail::bound_object>; | |
155 | #endif |