hg: jdk10/hs/hotspot: 8178336: Unnecessary SystemDictionary walk for Protection domain liveness

[coleen.phillimore at oracle.com]

Changeset: 3ff52f40bf2c
Author:    coleenp
Date:      2017-04-13 09:42 -0400
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/3ff52f40bf2c

8178336: Unnecessary SystemDictionary walk for Protection domain liveness
Summary: remove system dictionary walk and pass strong closure for !ClassUnloading
Reviewed-by: jiangli, iklam

! src/share/vm/classfile/dictionary.cpp
! src/share/vm/classfile/dictionary.hpp
+ src/share/vm/classfile/protectionDomainCache.cpp
+ src/share/vm/classfile/protectionDomainCache.hpp