1.1 --- a/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp Thu Mar 26 08:51:32 2009 -0700
1.2 +++ b/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp Sat Mar 28 15:47:29 2009 -0700
1.3 @@ -55,6 +55,7 @@
1.4 friend class ParScanThreadStateSet;
1.5 private:
1.6 ObjToScanQueue *_work_queue;
1.7 + GrowableArray<oop>* _overflow_stack;
1.8
1.9 ParGCAllocBuffer _to_space_alloc_buffer;
1.10
1.11 @@ -79,6 +80,9 @@
1.12 Space* _to_space;
1.13 Space* to_space() { return _to_space; }
1.14
1.15 + ParNewGeneration* _young_gen;
1.16 + ParNewGeneration* young_gen() const { return _young_gen; }
1.17 +
1.18 Generation* _old_gen;
1.19 Generation* old_gen() { return _old_gen; }
1.20
1.21 @@ -134,6 +138,11 @@
1.22 // Decrease queue size below "max_size".
1.23 void trim_queues(int max_size);
1.24
1.25 + // Private overflow stack usage
1.26 + GrowableArray<oop>* overflow_stack() { return _overflow_stack; }
1.27 + bool take_from_overflow_stack();
1.28 + void push_on_overflow_stack(oop p);
1.29 +
1.30 // Is new_obj a candidate for scan_partial_array_and_push_remainder method.
1.31 inline bool should_be_partially_scanned(oop new_obj, oop old_obj) const;
1.32
1.33 @@ -378,13 +387,17 @@
1.34 NOT_PRODUCT(int _overflow_counter;)
1.35 NOT_PRODUCT(bool should_simulate_overflow();)
1.36
1.37 + // Accessor for overflow list
1.38 + oop overflow_list() { return _overflow_list; }
1.39 +
1.40 // Push the given (from-space) object on the global overflow list.
1.41 void push_on_overflow_list(oop from_space_obj, ParScanThreadState* par_scan_state);
1.42
1.43 // If the global overflow list is non-empty, move some tasks from it
1.44 - // onto "work_q" (which must be empty). No more than 1/4 of the
1.45 - // max_elems of "work_q" are moved.
1.46 + // onto "work_q" (which need not be empty). No more than 1/4 of the
1.47 + // available space on "work_q" is used.
1.48 bool take_from_overflow_list(ParScanThreadState* par_scan_state);
1.49 + bool take_from_overflow_list_work(ParScanThreadState* par_scan_state);
1.50
1.51 // The task queues to be used by parallel GC threads.
1.52 ObjToScanQueueSet* task_queues() {
