Re: [Info-gnuprologjava] Adding hooks for executing code when frames are being discarded

[Matt Lilley]

Hello,

I've attached a patch that does the trick. I don't think it's too 
inefficient, though it does make popping frames a bit slower (I don't 
think there's any way you can avoid that if the task at hand is to add 
complexity to that very process). Also attached is an implementation of 
Predicate_setup_call_catcher_cleanup, the more general case of 
setup_call_cleanup/3. I'm not entirely sure how your testing framework 
works, but I can provide a prolog file as well if that would help.

I'm happy to rework this if you have suggestions on how it could be 
better integrated; I'm obviously very new to your project!

Thanks again,
Matt

> Hello,
>
> If you want to submit a patch to add that functionality then that would
> be great, I have no problem with adding non-ISO features as long as ISO
> features don't get broken and as long as it can be implemented cleanly.
> Unfortunately I don't have time to work out how to write such a patch
> myself at the moment but I do have time to review it. If you could add
> some test cases to prove it works that would be great.
>
> If implementing it cleanly is not possible then we can look at what
> could be changed to either make that possible or to allow a local hack.
>
> If you have any questions then please ask.
>
> Best regards,
>
> Daniel


--
_____________________________________________
Matt Lilley
Software Engineer
SecuritEase

Tel:    +64 4 912-2100
Fax:    +64 4 912-2101
E-mail: address@hidden
Web:    http://www.securitease.com
_____________________________________________

This e-mail has passed our content security scan.
It is covered by the confidentiality clauses at 
http://www.securitease.com/content_and_confidentiality

0001-Support-executing-cleanup-code-when-backtracking.patch
Description: Text document

Predicate_setup_call_catcher_cleanup.java
Description: Text document