archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-18 18:14:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6948539: CMS+UseCompressedOops: placement of cms_free bit interferes with promoted object link

Browse source 
When using compressed oops, use compressed promoted pointers in b63:b31 of the mark word, so as not to interfere with the CMS "freeness bit" at b7. Updated mark-word layout documentation.

Reviewed-by: minqi, poonam, jmasa, coleenp
This commit is contained in:
Y. Srinivas Ramakrishna 2010-05-17 00:47:28 -07:00
parent 0d3978019b
commit f8643be266
3 changed files with 76 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/promotionInfo.cpp
View file

@ -1,5 +1,5 @@
/*
* Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it