hg: jdk9/hs-gc/hotspot: 8069273: Decrease Hot Card Cache Lock contention

[claes.redestad at oracle.com]

Changeset: 1c8ba2d0d2f0
Author:    redestad
Date:      2015-01-29 15:05 +0100
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/1c8ba2d0d2f0

8069273: Decrease Hot Card Cache Lock contention
Reviewed-by: tschatzl, mgerdin

! src/share/vm/gc_implementation/g1/g1HotCardCache.cpp
! src/share/vm/gc_implementation/g1/g1HotCardCache.hpp
! src/share/vm/runtime/mutexLocker.cpp
! src/share/vm/runtime/mutexLocker.hpp