hg: jdk/sandbox: 2 new changesets

[chris.hegarty at oracle.com]

Changeset: 288777cf0702
Author:    mgronlun
Date:      2019-12-04 21:26 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/288777cf0702

8234060: Potential memory reordering problem in JfrBuffer flush mechanism
Reviewed-by: egahlin
Contributed-by: Denghui Dong <denghui.ddh at alibaba-inc.com>

! src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp
! src/hotspot/share/jfr/recorder/storage/jfrBuffer.hpp
! src/hotspot/share/jfr/recorder/storage/jfrMemorySpace.inline.hpp
! src/hotspot/share/jfr/recorder/storage/jfrStorage.cpp
! src/hotspot/share/jfr/recorder/storage/jfrStorageUtils.inline.hpp
! src/jdk.jfr/share/classes/jdk/jfr/internal/EventWriter.java

Changeset: 8a8c60853789
Author:    rkennke
Date:      2019-12-04 21:40 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/8a8c60853789

8235355: Shenandoah: Resolve deadlock between OOM handler and nmethod lock
Reviewed-by: zgu

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