Fixing presets: Difference between revisions

Here's my current hypothesis: when FlightGear is reset, some modules are replaced with new ones (the old ones may or may not be deleted, but are never unbound).  We end up with all kinds of dangling references, especially (but not exclusively) for bound properties, and eventually things grind to a halt.

If I'm right, the property module makes the crash happen sooner, but the crash *will* happen one way or another, and there are probably some nasty memory leaks in there as well.  Remember that reset has always caused occasional unexplained, hard-to-reproduce crashes.

The long-term fix is to finish the cleanup of main.cxx and fg_init.cxx so that all initialization code is moved out to the subsystems, and

the subsystems themselves are kept in a single, ordered list so that they can be managed easily and transparently.  It should not be

necessary to delete and replace any subsystems on a reset, with the exception of the FDM, since all can adjust their state as required.<ref>{{cite web |url=http://www.mail-archive.com/flightgear-devel@flightgear.org/msg06742.html |title= Crash on "Reset" function.|author=David Megginson |date=Wed, 05 Jun 2002 08:00:36 -0700}}</ref>|David Megginson}}