hg: jdk7/hotspot-gc/hotspot: 6782457: CMS: Livelock in CompactibleFreeListSpace::block_size(); ...

[y.s.ramakrishna at sun.com]

Changeset: d249b360e026
Author:    ysr
Date:      2008-12-10 23:46 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/d249b360e026

6782457: CMS: Livelock in CompactibleFreeListSpace::block_size()
6736295: SIGSEGV in product jvm, assertion "these are the only valid states during a mark sweep" in fastdebug
Summary: Restructured the code in the perm gen allocation retry loop so as to avoid "safepoint-blocking" on locks, in this case the Heap_lock, while holding uninitialized allocated heap storage.
Reviewed-by: apetrusenko, iveresov, jcoomes, jmasa, poonam

! src/share/vm/memory/permGen.cpp