URGENT RFR (S): fix for Test8004741.java crashes with SIGSEGV in JDK10-hs nightly (8185273)

[Aleksey Shipilev]

On 07/31/2017 07:07 PM, Daniel D. Daugherty wrote:
> Latest webrev: http://cr.openjdk.java.net/~dcubed/8185273-webrev/1/
> 
> Only src/share/vm/runtime/thread.cpp is changed relative to round 0:
> 
> - Revised the comment in Threads::parallel_java_threads_do.
> - Added the assert to Threads::assert_all_threads_claimed().
> 
> Comments, questions and feedback are welcome.

Looks good!

-Aleksey

P.S. Roman: I'm going to cherry-pick that to Shenandoah after this lands to jdk10/hs.