33 // Helper class to mark through large objArrays during marking in an efficient way.
  34 // Instead of pushing large object arrays, we push continuations onto the
  35 // mark stack. These continuations are identified by having their LSB set.
  36 // This allows incremental processing of large objects.
  37 class G1CMObjArrayProcessor VALUE_OBJ_CLASS_SPEC {
  38 private:
  39   // Reference to the task for doing the actual work.
  40   G1CMTask* _task;
  41 
  42   // Push the continuation at the given address onto the mark stack.
  43   void push_array_slice(HeapWord* addr);
  44 
  45   // Process (apply the closure) on the given continuation of the given objArray.
  46   size_t process_array_slice(objArrayOop const obj, HeapWord* start_from, size_t remaining);
  47 public:
  48   static bool should_be_sliced(oop obj);
  49 
  50   G1CMObjArrayProcessor(G1CMTask* task) : _task(task) {
  51   }
  52 
  53   // Process the given continuation "oop". Returns the number of words scanned.
  54   size_t process_slice(HeapWord* slice);
  55   // Start processing the given objArrayOop by scanning the header and pushing its
  56   // continuation.
  57   size_t process_obj(oop obj);
  58 };
  59 
  60 #endif /* SHARE_VM_GC_G1_G1CONCURRENTMARKOBJARRAYPROCESSOR_HPP */

  33 // Helper class to mark through large objArrays during marking in an efficient way.
  34 // Instead of pushing large object arrays, we push continuations onto the
  35 // mark stack. These continuations are identified by having their LSB set.
  36 // This allows incremental processing of large objects.
  37 class G1CMObjArrayProcessor VALUE_OBJ_CLASS_SPEC {
  38 private:
  39   // Reference to the task for doing the actual work.
  40   G1CMTask* _task;
  41 
  42   // Push the continuation at the given address onto the mark stack.
  43   void push_array_slice(HeapWord* addr);
  44 
  45   // Process (apply the closure) on the given continuation of the given objArray.
  46   size_t process_array_slice(objArrayOop const obj, HeapWord* start_from, size_t remaining);
  47 public:
  48   static bool should_be_sliced(oop obj);
  49 
  50   G1CMObjArrayProcessor(G1CMTask* task) : _task(task) {
  51   }
  52 
  53   // Process the given continuation. Returns the number of words scanned.
  54   size_t process_slice(HeapWord* slice);
  55   // Start processing the given objArrayOop by scanning the header and pushing its
  56   // continuation.
  57   size_t process_obj(oop obj);
  58 };
  59 
  60 #endif /* SHARE_VM_GC_G1_G1CONCURRENTMARKOBJARRAYPROCESSOR_HPP */