hg: jdk/jdk: 8246097: Shenandoah: limit parallelism in CLDG root handling

[shade at redhat.com]

Changeset: c60f06714a9e
Author:    shade
Date:      2020-06-02 14:27 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/c60f06714a9e

8246097: Shenandoah: limit parallelism in CLDG root handling
Reviewed-by: zgu

! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.hpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahSharedVariables.hpp