cleanup up cleanup at session destruction; clarify the meaning of 3 signals (DropReferences & Destroyed in libardour ; CatchDeletion in the GTK UI); clarify ownership of objects (session no longer pays attention to DropReferences for objects that it is considered to own, such as routes, sources, etc); fix up MIDI parsing and a couple of other places by correcting syntax for return of values from a boost::signals2::signal (possible danger elsewhere to be checked)

git-svn-id: svn://localhost/ardour2/branches/3.0@6389 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 5 insertions, 6 deletions

diff --git a/libs/pbd/pbd/destructible.h b/libs/pbd/pbd/destructible.h
index 8cc0113ff7..8881b45c55 100644
--- a/libs/pbd/pbd/destructible.h
+++ b/libs/pbd/pbd/destructible.h
@@ -26,14 +26,13 @@ namespace PBD {
 
 class Destructible {
   public:
-        Destructible() : refs_dropped (false){}
-	virtual ~Destructible () {}
+        Destructible() {}
+	virtual ~Destructible () { Destroyed(); }
 	
-	PBD::Signal0<void> GoingAway;
-	void drop_references () { if (!refs_dropped) { GoingAway(); } refs_dropped = true; }
+	PBD::Signal0<void> Destroyed;
+	PBD::Signal0<void> DropReferences;
 
-  private:
-	bool refs_dropped;
+	void drop_references () { DropReferences();  }
 };
 
 }