git: openjdk/mobile: 8241142: Shenandoah: should not use parallel reference processing with single GC thread

[duke]

Changeset: e969c158
Author:    Aditya Mandaleeka <adityam at microsoft.com>
Committer: Aleksey Shipilev <shade at openjdk.org>
Date:      2020-04-14 21:17:48 +0000
URL:       https://git.openjdk.java.net/mobile/commit/e969c158

8241142: Shenandoah: should not use parallel reference processing with single GC thread

Reviewed-by: shade

! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp