hg: hsx/hotspot-gc/hotspot: 7147806: G1: Crash in vm bootstrap when running with -XX:+UseG1GC -XX:-UsePerfData

[john.cuthbertson at oracle.com]

Changeset: b5290bf0a9e4
Author:    johnc
Date:      2012-03-02 10:36 -0800
URL:       http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/b5290bf0a9e4

7147806: G1: Crash in vm bootstrap when running with -XX:+UseG1GC -XX:-UsePerfData
Summary: Update generation and collector counters only if UsePerfData is enabled.
Reviewed-by: iveresov, tonyp

! src/share/vm/gc_implementation/g1/g1MonitoringSupport.cpp