RFR(S): 8231949: [PPC64, s390]: Make async profiling more reliable

[Lindenmaier, Goetz]

Hi Martin, 

Yes, it makes sense to test first that the method is valid.
Looks good.

Best regards,
  Goetz.

> -----Original Message-----
> From: hotspot-runtime-dev <hotspot-runtime-dev-bounces at openjdk.java.net>
> On Behalf Of Doerr, Martin
> Sent: Montag, 7. Oktober 2019 16:57
> To: hotspot-runtime-dev at openjdk.java.net; Haug, Gunter
> <gunter.haug at sap.com>; Schmidt, Lutz <lutz.schmidt at sap.com>; Stuefe,
> Thomas <thomas.stuefe at sap.com>
> Subject: [CAUTION] RFR(S): 8231949: [PPC64, s390]: Make async profiling
> more reliable
> 
> Hi,
> 
> I'd like to make pd_get_top_frame_for_profiling more reliable on PPC64 and
> s390 as we have seen crashes in this function.
> 
> See bug for more details:
> https://bugs.openjdk.java.net/browse/JDK-8231949
> 
> Webrev:
> http://cr.openjdk.java.net/~mdoerr/8231949_get_top_frame_for_profiling/we
> brev.00/
> 
> Please review.
> 
> Best regards,
> Martin