hg: hsx/hotspot-gc/hotspot: 8000311: G1: ParallelGCThreads==0 broken

[john.cuthbertson at oracle.com]

Changeset: 2e6857353b2c
Author:    johnc
Date:      2012-10-04 10:04 -0700
URL:       http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/2e6857353b2c

8000311: G1: ParallelGCThreads==0 broken
Summary: Divide by zero error, if ParallelGCThreads is 0, when adjusting the PLAB size.
Reviewed-by: jmasa, jcoomes

! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/gc_implementation/parNew/parNewGeneration.cpp
! src/share/vm/gc_implementation/shared/parGCAllocBuffer.cpp
! src/share/vm/gc_implementation/shared/parGCAllocBuffer.hpp