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