git: openjdk/jdk: 8284435: Add dedicated filler objects for known dead Java heap areas

[Thomas Schatzl]

Changeset: 70205956
Author:    Thomas Schatzl <tschatzl at openjdk.org>
Date:      2022-05-02 11:03:57 +0000
URL:       https://git.openjdk.java.net/jdk/commit/70205956313740e48e1fcb0c02c8f1488ab0d987

8284435: Add dedicated filler objects for known dead Java heap areas

Reviewed-by: iklam, iwalulya

! src/hotspot/share/classfile/systemDictionaryShared.cpp
! src/hotspot/share/classfile/vmClassMacros.hpp
! src/hotspot/share/classfile/vmSymbols.hpp
! src/hotspot/share/gc/shared/collectedHeap.cpp
! src/hotspot/share/memory/universe.cpp
! src/hotspot/share/memory/universe.hpp
= src/java.base/share/classes/jdk/internal/vm/FillerObject.java
+ test/hotspot/jtreg/gc/TestFillerObjectInstantiation.java