[jdk11u-dev] RFR: 8215624: Add parallel heap iteration for jmap -histo

[BuddyLiao]

On Tue, 29 Jun 2021 08:01:15 GMT, BuddyLiao <github.com+3094961+buddyliao at openjdk.org> wrote:

> 8251570: JDK-8215624 causes assert(worker_id <' _n_workers) failed: Invalid worker_id
> 8253763: ParallelObjectIterator should have virtual destructor

Fix Request

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/75