hg: jdk/sandbox: 8213211: [BACKOUT] Allow Klass::_subklass and _next_sibling to have unloaded classes

[chris.hegarty at oracle.com]

Changeset: 19c4a3eec4d7
Author:    coleenp
Date:      2018-10-31 14:38 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/19c4a3eec4d7

8213211: [BACKOUT] Allow Klass::_subklass and _next_sibling to have unloaded classes
Reviewed-by: jiangli, jwilhelm

! src/hotspot/share/ci/ciInstanceKlass.cpp
! src/hotspot/share/ci/ciInstanceKlass.hpp
! src/hotspot/share/jfr/jni/jfrGetAllEventClasses.cpp
! src/hotspot/share/jvmci/jvmciCompilerToVM.cpp
! src/hotspot/share/memory/universe.cpp
! src/hotspot/share/memory/universe.hpp
! src/hotspot/share/oops/instanceKlass.cpp
! src/hotspot/share/oops/instanceKlass.hpp
! src/hotspot/share/oops/klass.cpp
! src/hotspot/share/oops/klass.hpp
! src/hotspot/share/runtime/mutex.cpp
! src/hotspot/share/utilities/vmError.cpp
- test/hotspot/jtreg/runtime/ClassUnload/UnloadInterfaceTest.java
- test/hotspot/jtreg/runtime/ClassUnload/test/ImplementorClass.java
- test/hotspot/jtreg/runtime/ClassUnload/test/Interface.java
! test/hotspot/jtreg/runtime/testlibrary/ClassUnloadCommon.java