hg: hsx/hotspot-gc/hotspot: 7182260: G1: Fine grain RSet freeing bottleneck

[john.cuthbertson at oracle.com]

Changeset: db823a892a55
Author:    johnc
Date:      2012-07-17 12:24 -0700
URL:       http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/db823a892a55

7182260: G1: Fine grain RSet freeing bottleneck
Summary: Chain the fine grain PerRegionTables in an individual RSet together and free them in bulk using a single operation.
Reviewed-by: johnc, brutisso
Contributed-by: Thomas Schatzl <thomas.schatzl at jku.at>

! src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp
! src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp