RFR: 8259349: -XX:AvgMonitorsPerThreadEstimate=1 does not work right

[Daniel D.Daugherty]

On Thu, 7 Jan 2021 22:41:11 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

> This is a trivial fix to make the "-XX:AvgMonitorsPerThreadEstimate"
> option work correctly for values < 1024.
> 
> I've locally built and tested this fix on my MBP13. It will be included in my
> next Mach5 Tier[1-3] testing batch.

Note: I'm testing out stacking patches in Git so the changes to  src/hotspot/share/runtime/threadSMR.cpp
are actually for https://bugs.openjdk.java.net/browse/JDK-8259397.

This is the correct commit for this PR review: https://github.com/openjdk/jdk/pull/1992/commits/0fe88c019910bb1e0335bd1f27d62eee78dbd558

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PR: https://git.openjdk.java.net/jdk/pull/1992