hg: jdk/submit: 8214535: Add parallel heap iteration for jmap ?histo

[paul.hohensee at gmail.com]

Changeset: 46fd4324d6dc
Author:    phh
Date:      2020-07-24 09:11 -0700
URL:       https://hg.openjdk.java.net/jdk/submit/rev/46fd4324d6dc

8214535: Add parallel heap iteration for jmap ?histo

! src/hotspot/share/memory/heapInspection.cpp