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Re: Fragile IDL 8 Object Programs [message #73184 is a reply to message #73019]

Wed, 27 October 2010 15:39

rdh
Messages: 6
Registered: October 2009

Junior Member

> Is anyone else having this problem? I write a LOT of
> IDL object programs. But I pretty much have to work
> in IDL 7 to debug them. IDL 8 is so incredibly fragile
> when an object crashes. I don't know if this is because
> of the new memory management of objects or what. But
> it's just really hard to work this way. Is it because
> my widgets are objects and there is some bad interaction
> between these two systems? Is it because I recompile after
> an object has crashed and I fix the problem, so the cleanup
> is confused? I don't know. Still looking for patterns and
> solutions. :-(

FYI, there is a known bug using heap variables with object graphics as
a result of IDL 8's new automatic garbage collection. Perhaps this is
related to what you are seeing?

Basically, IDL "cleans up" any heap variables that are created within
object graphics routines at random points, for our programs it happens
with IDLgrWindow->Draw(). I'm not sure if this is the only method
affected. The bug # is CR59955 and it is supposedly going to be fixed
in the next IDL 8 patch.

You can currently get around this problem by disabling garbage
collection with !null = heap_refcount(/DISABLE), or by using IDL 7.

Romy

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[Message index]

		Fragile IDL 8 Object Programs By: David Fanning on Mon, 25 October 2010 08:06
		Re: Fragile IDL 8 Object Programs By: R.G.Stockwell on Tue, 26 October 2010 12:34
		Re: Fragile IDL 8 Object Programs By: Mark Piper on Wed, 27 October 2010 06:34
		Re: Fragile IDL 8 Object Programs By: Mark[1] on Tue, 26 October 2010 16:08
		Re: Fragile IDL 8 Object Programs By: David Fanning on Mon, 25 October 2010 16:39
		Re: Fragile IDL 8 Object Programs By: penteado on Mon, 25 October 2010 16:13
		Re: Fragile IDL 8 Object Programs By: Doug Edmundson on Mon, 25 October 2010 16:04
		Re: Fragile IDL 8 Object Programs By: David Fanning on Mon, 25 October 2010 15:13
		Re: Fragile IDL 8 Object Programs By: R.G.Stockwell on Mon, 25 October 2010 14:33
		Re: Fragile IDL 8 Object Programs By: David Fanning on Mon, 25 October 2010 10:45
		Re: Fragile IDL 8 Object Programs By: David Fanning on Mon, 25 October 2010 10:31
		Re: Fragile IDL 8 Object Programs By: rdh on Wed, 27 October 2010 15:39
		Re: Fragile IDL 8 Object Programs By: David Fanning on Wed, 27 October 2010 10:24
		Re: Fragile IDL 8 Object Programs By: R.G.Stockwell on Wed, 27 October 2010 10:08

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