[7u-dev] Request for approval for 8041984: CompilerThread seems to occupy all CPU in a very rare situation

[Vladimir Kozlov]

Backport to 7u request. Changes were pushed into jdk9 last week and 8u 
this week. Nightly testing is fine. Changes are applied cleanly to 7u 
sources.

https://bugs.openjdk.java.net/browse/JDK-8041984

http://cr.openjdk.java.net/~kvn/8041984/webrev.01/

Review thread:
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2014-October/015855.html

jdk9 changeset:
http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/b9576378eaad

jdk8u changeset:
http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/90297adbda9d

Thanks,
Vladimir