git: openjdk/jdk17: 8268265: MutableSpaceUsedHelper::take_sample() hits assert(left >= right) failed: avoid overflow

[Kim Barrett]

Changeset: c98d5084
Author:    Kim Barrett <kbarrett at openjdk.org>
Date:      2021-06-17 19:05:10 +0000
URL:       https://git.openjdk.java.net/jdk17/commit/c98d50848ba2811d2f08b3fbc57ac9674c63a943

8268265: MutableSpaceUsedHelper::take_sample() hits assert(left >= right) failed: avoid overflow

Reviewed-by: tschatzl, iwalulya

! src/hotspot/share/gc/parallel/spaceCounters.cpp
! src/hotspot/share/gc/parallel/spaceCounters.hpp
! src/hotspot/share/gc/serial/cSpaceCounters.cpp
! src/hotspot/share/gc/serial/cSpaceCounters.hpp