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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/libs/signals/src/slot.cpp
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Import.
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+// 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/slot.hpp>
+
+namespace boost {
+ namespace BOOST_SIGNALS_NAMESPACE {
+ namespace detail {
+ void slot_base::create_connection()
+ {
+ // Create a new connection object
+ basic_connection* con = new basic_connection();
+
+ /* nothrow */ {
+ // The signal portion isn't really necessary, except that we need a
+ // signal for the connection to be connected.
+ con->signal = static_cast<void*>(this);
+ con->signal_data = 0;
+ con->blocked_ = false ;
+ con->signal_disconnect = &bound_object_destructed;
+ }
+
+ // This connection watches for destruction of bound objects. Note
+ // that the reset routine will delete con if an allocation throws
+ data->watch_bound_objects.reset(con);
+
+ // We create a scoped connection, so that exceptions thrown while
+ // adding bound objects will cause a cleanup of the bound objects
+ // already connected.
+ scoped_connection safe_connection(data->watch_bound_objects);
+
+ // Now notify each of the bound objects that they are connected to this
+ // slot.
+ for(std::vector<const trackable*>::iterator i =
+ data->bound_objects.begin();
+ i != data->bound_objects.end(); ++i) {
+ // Notify the object that the slot is connecting to it
+ BOOST_SIGNALS_NAMESPACE::detail::bound_object binding;
+ (*i)->signal_connected(data->watch_bound_objects, binding);
+
+ // This will notify the bound object that the connection just made
+ // should be disconnected if an exception is thrown before the
+ // end of this iteration
+ BOOST_SIGNALS_NAMESPACE::detail::auto_disconnect_bound_object
+ disconnector(binding);
+
+ // Add the binding to the list of bindings for the connection
+ con->bound_objects.push_back(binding);
+
+ // The connection object now knows about the bound object, so if an
+ // exception is thrown later the connection object will notify the
+ // bound object of the disconnection automatically
+ disconnector.release();
+ }
+
+ // No exceptions will be thrown past this point.
+ safe_connection.release();
+
+ data->watch_bound_objects.set_controlling(true);
+ }
+ } // end namespace detail
+ } // end namespace BOOST_SIGNALS_NAMESPACE
+} // end namespace boost