// Boost.Signals library // Copyright Douglas Gregor 2001-2004. Use, modification and // distribution is subject to 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) // For more information, see http://www.boost.org #define BOOST_SIGNALS_SOURCE #include <boost/signals/connection.hpp> #include <cassert> namespace boost { namespace BOOST_SIGNALS_NAMESPACE { connection::connection(const connection& other) : con(other.con), controlling_connection(other.controlling_connection) { } connection::~connection() { if (controlling_connection) { disconnect(); } } void connection::reset(BOOST_SIGNALS_NAMESPACE::detail::basic_connection* new_con) { con.reset(new_con); } bool connection::operator==(const connection& other) const { return con.get() == other.con.get(); } bool connection::operator<(const connection& other) const { return con.get() < other.con.get(); } connection& connection::operator=(const connection& other) { connection(other).swap(*this); return *this; } void connection::swap(connection& other) { this->con.swap(other.con); std::swap(this->controlling_connection, other.controlling_connection); } void swap(connection& c1, connection& c2) { c1.swap(c2); } scoped_connection::scoped_connection(const connection& other) : connection(other), released(false) { } scoped_connection::scoped_connection(const scoped_connection& other) : connection(other), released(other.released) { } scoped_connection::~scoped_connection() { if (!released) { this->disconnect(); } } connection scoped_connection::release() { released = true; return *this; } void scoped_connection::swap(scoped_connection& other) { this->connection::swap(other); bool other_released = other.released; other.released = this->released; this->released = other_released; } void swap(scoped_connection& c1, scoped_connection& c2) { c1.swap(c2); } scoped_connection& scoped_connection::operator=(const connection& other) { scoped_connection(other).swap(*this); return *this; } scoped_connection& scoped_connection::operator=(const scoped_connection& other) { scoped_connection(other).swap(*this); return *this; } void connection::add_bound_object(const BOOST_SIGNALS_NAMESPACE::detail::bound_object& b) { assert(con.get() != 0); con->bound_objects.push_back(b); } void connection::disconnect() const { if (this->connected()) { // Make sure we have a reference to the basic_connection object, // because 'this' may disappear shared_ptr<detail::basic_connection> local_con = con; void (*signal_disconnect)(void*, void*) = local_con->signal_disconnect; // Note that this connection no longer exists // Order is important here: we could get into an infinite loop if this // isn't cleared before we try the disconnect. local_con->signal_disconnect = 0; // Disconnect signal signal_disconnect(local_con->signal, local_con->signal_data); // Disconnect all bound objects typedef std::list<BOOST_SIGNALS_NAMESPACE::detail::bound_object>::iterator iterator; for (iterator i = local_con->bound_objects.begin(); i != local_con->bound_objects.end(); ++i) { assert(i->disconnect != 0); i->disconnect(i->obj, i->data); } } } } // end namespace boost } // end namespace boost #ifndef BOOST_MSVC // Explicit instantiations to keep everything in the library template class std::list<boost::BOOST_SIGNALS_NAMESPACE::detail::bound_object>; #endif