Subj : Rhino 1.5 script interrupt/terminate
To   : netscape.public.mozilla.jseng
From : "rhino" <lblanchette@grandcentral.com>
Date : Wed Jan 22 2003 12:43 pm

Rhino 1.5 exposes a callback method for Context:

protected void observeInstructionCount(int instructionCount);

the javadoc suggests "The method is useful to observe long running scripts
and if necessary to terminate them." I would like to limit execution time on
scripts to manage resources and kill infinite loop type conditions in a
server environment.



So with optimization set to -1 and setInstructionObserverThreshold set this
method does indeed get invoked during script execution. The question is how
to terminate the script. Thread.currentThread().interrupt() doesn't do it.
Another approach I've tried that works is to call reportError("some
message") from the observeInstructionCount method. This does the trick
generating an EvaluatorException and exiting the script Seems like a hack
and there should be a more direct way to do this.

Comments?

.