RFR: 8212992: Change mirror accessor in Klass::verify_on() to use AS_NO_KEEPALIVE (original) (raw)
Erik Österlund erik.osterlund at oracle.com
Thu Oct 25 18:45:57 UTC 2018
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Hi,
The Klass::verify_on() is sometimes called on unloading klasses. It then reads a dead mirror, without using AS_NO_KEEPALIVE, which can make GC barriers feel like :C (because that should never normally happen). In order to make barriers happy, AS_NO_KEEPALIVE should be used when loading dead oops.
Webrev: http://cr.openjdk.java.net/~eosterlund/8212992/webrev.00/
Bug: https://bugs.openjdk.java.net/browse/JDK-8212992
Thanks, /Erik
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