hg: jdk/submit: 8211270: GC abstraction to get real object and headers size

[roman at kennke.org]

Changeset: 0cbb48632a2b
Author:    rkennke
Date:      2018-10-10 09:10 +0200
URL:       http://hg.openjdk.java.net/jdk/submit/rev/0cbb48632a2b

8211270: GC abstraction to get real object and headers size

! src/hotspot/share/gc/shared/collectedHeap.cpp
! src/hotspot/share/gc/shared/collectedHeap.hpp
! src/hotspot/share/prims/jvmtiEnv.cpp
! src/hotspot/share/prims/whitebox.cpp