hg: jdk9/hs-gc/hotspot: 8049599: MetaspaceGC::_capacity_until_GC can overflow

[erik.helin at oracle.com]

Changeset: ddb0b16cd6c2
Author:    ehelin
Date:      2014-10-01 16:09 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/ddb0b16cd6c2

8049599: MetaspaceGC::_capacity_until_GC can overflow
Reviewed-by: jmasa, stefank

! src/share/vm/memory/metaspace.cpp
! src/share/vm/memory/metaspace.hpp
! src/share/vm/prims/whitebox.cpp
+ test/gc/metaspace/TestCapacityUntilGCWrapAround.java
! test/testlibrary/whitebox/sun/hotspot/WhiteBox.java