hg: jdk/submit: 8242216: ObjectSampler::weak_oops_do() should not trigger barrier

[zgu at redhat.com]

Changeset: 78b7ed1f1343
Author:    zgu
Date:      2020-04-06 10:56 -0400
URL:       https://hg.openjdk.java.net/jdk/submit/rev/78b7ed1f1343

8242216: ObjectSampler::weak_oops_do() should not trigger barrier

! src/hotspot/share/jfr/leakprofiler/sampling/objectSample.cpp
! src/hotspot/share/jfr/leakprofiler/sampling/objectSample.hpp
! src/hotspot/share/jfr/leakprofiler/sampling/objectSampler.cpp