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(p: 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(other&: *this); |
49 | return *this; |
50 | } |
51 | |
52 | void connection::swap(connection& other) |
53 | { |
54 | this->con.swap(other&: other.con); |
55 | std::swap(a&: this->controlling_connection, b&: other.controlling_connection); |
56 | } |
57 | |
58 | void swap(connection& c1, connection& c2) |
59 | { |
60 | c1.swap(other&: 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(other&: c2); |
99 | } |
100 | |
101 | scoped_connection& |
102 | scoped_connection::operator=(const connection& other) |
103 | { |
104 | scoped_connection(other).swap(other&: *this); |
105 | return *this; |
106 | } |
107 | |
108 | scoped_connection& |
109 | scoped_connection::operator=(const scoped_connection& other) |
110 | { |
111 | scoped_connection(other).swap(other&: *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(x: 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 |
156 | |