hg: jdk/jdk: 8235260: Shenandoah: Don't allow recycle-assist until concurrent roots are done

[rkennke at redhat.com]

Changeset: 1ea1c063ad52
Author:    rkennke
Date:      2019-12-03 21:23 +0100
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/1ea1c063ad52

8235260: Shenandoah: Don't allow recycle-assist until concurrent roots are done
Reviewed-by: zgu

! src/hotspot/share/gc/shenandoah/shenandoahFreeSet.cpp
! src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp