Re: [Jikesrvm-researchers] Runtime shutdown hooks do not run when main returns without Runtime.exit

[Steven A. <au...@wa...>]

Brian D. Carlstrom wrote:
> Shutdown hooks are being run when Runtime.exit is called but not if the
> "main" method returns normally. The javadoc for Runtime.addShutdownHook
> confirms that it should run in this case:
> 
>     http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html#addShutdownHook(java.lang.Thread)
> 
>         The Java virtual machine shuts down in response to two kinds of events: 
>         - The program exits normally, when the last non-daemon thread exits or
>           when the exit (equivalently, System.exit) method is invoked

It seems clear that our behavior is broken.

I am not positive, though, about the replacement of calls to VM.sysExit()
with calls to VM.exit().  I will want to examine this more closely
before I take in this patch.  I don't have the time to do so right now,
but I should be able to do it tonight or tomorrow (Monday).


> PS: I didn't see any reply on my PIC compilation option patch. The
> second post seems to have gone through. Any comments?

It seems like it's obviously the right thing to do.  I've now handled
this in a separate letter.

--Steve Augart