Ports say when they're going away.

git-svn-id: svn://localhost/ardour2/branches/3.0@4380 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 11 insertions, 0 deletions

diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index 7aadb9183f..f3e0739e83 100644
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -34,6 +34,7 @@ Port::Port (const std::string& name, Flags flgs)
 
 Port::~Port ()
 {
+	drop_references ();
 	disconnect_all ();
 }
 
@@ -59,6 +60,7 @@ Port::connect (Port& other)
 	result = _connections.insert (&other);
 
 	if (result.second) {
+		other.GoingAway.connect (sigc::bind (mem_fun (*this, &Port::port_going_away), &other));
 		return 0;
 	} else {
 		return 1;
@@ -131,6 +133,14 @@ Port::get_connections (vector<string>& names) const
 	return i;
 }
 
+void
+Port::port_going_away (Port* p)
+{
+	/* caller must hold process lock */
+
+	disconnect (*p);
+}
+
 
 //-------------------------------------
 
@@ -377,3 +387,4 @@ PortFacade::reset ()
 		_ext_port->reset ();
 	}
 }
+