1.1 --- a/src/share/vm/gc_implementation/g1/concurrentMark.hpp Thu Dec 16 09:14:34 2010 -0800
1.2 +++ b/src/share/vm/gc_implementation/g1/concurrentMark.hpp Fri Dec 17 11:26:53 2010 -0800
1.3 @@ -33,6 +33,25 @@
1.4 typedef GenericTaskQueue<oop> CMTaskQueue;
1.5 typedef GenericTaskQueueSet<CMTaskQueue> CMTaskQueueSet;
1.6
1.7 +// Closure used by CM during concurrent reference discovery
1.8 +// and reference processing (during remarking) to determine
1.9 +// if a particular object is alive. It is primarily used
1.10 +// to determine if referents of discovered reference objects
1.11 +// are alive. An instance is also embedded into the
1.12 +// reference processor as the _is_alive_non_header field
1.13 +class G1CMIsAliveClosure: public BoolObjectClosure {
1.14 + G1CollectedHeap* _g1;
1.15 + public:
1.16 + G1CMIsAliveClosure(G1CollectedHeap* g1) :
1.17 + _g1(g1)
1.18 + {}
1.19 +
1.20 + void do_object(oop obj) {
1.21 + ShouldNotCallThis();
1.22 + }
1.23 + bool do_object_b(oop obj);
1.24 +};
1.25 +
1.26 // A generic CM bit map. This is essentially a wrapper around the BitMap
1.27 // class, with one bit per (1<<_shifter) HeapWords.
1.28
