RFR: 8221207: Redo JDK-8218446 - SuspendAtExit hangs

[Robbin Ehn]

Hi David, looks good!

/Robbin

On 2019-03-21 09:47, David Holmes wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8221207
> 
> There was one small oversight in the original fix that led to crashes, seen 
> (randomly) in JDI tests. The safepoint check must not happen if the thread-state 
> is already _thread_in_native. I've checked the thread-state on all call paths to 
> confirm that.
> 
> Incremental webrev from original fix: 
> http://cr.openjdk.java.net/~dholmes/8221207/webrev.inc/
> 
> Full webrev: http://cr.openjdk.java.net/~dholmes/8221207/webrev/
> 
> Re-tested in mach5 tiers 1-3 and com/sun/jdi tests (but they passed last time 
> too.).
> 
> Thanks,
> David
>