Backporting an AsyncGetCallTrace patch to OpenJDK6

[Daniel D. Daugherty]

Can someone remind me which HSX version OpenJDK6-B11 is based on?

Compiler team, Steve G. had talked about back porting this fix
to earlier HSX releases (prior to HSX-13), but I don't believe
that he got to that task or handed off to anyone else on the
Compiler team prior to the unfortunate event at the end of June.

I reviewed Steve's original changes from an AsyncGetCallTrace()
point-of-view and I can review these change from the same POV,
but one or more folks on the compiler team is going to have to
look at these changes from the Compiler team POV...

Dan



Hiroshi Yamauchi wrote:
> Hi,
>
> I backported the change
>
>   http://hg.openjdk.java.net/jdk7/jdk7/hotspot/rev/93b6525e3b82
>
> into OpenJDK6 b11 (the patch attached) to avoid JVM crashes in the
> AsyncGetCallTrace(). The change appears to have been first introduced
> in OpenJDK7 b27 (Hotspot v13-b01).
>
> It'd be great if this patch can be reviewed and applied to future OpenJDK6
> builds.
>
> I understand that this may be a 'scary' patch considering the stable
> nature of OpenJDK6. I'd appreciate it if the Hotspot folks can review and
> comment on this patch.
>
> Thanks,
> Hiroshi
>