src/hotspot/share/gc/parallel/psParallelCompact.cpp

8211446_01: revision due to comments from StefanJ and Thomas

*** 844,858 ****
  
  PSParallelCompact::IsAliveClosure PSParallelCompact::_is_alive_closure;
  
  bool PSParallelCompact::IsAliveClosure::do_object_b(oop p) { return mark_bitmap()->is_marked(p); }
  
! class PSReferenceProcessor: public ReferenceProcessor {
  public:
!   PSReferenceProcessor(
      BoolObjectClosure* is_subject_to_discovery,
!     BoolObjectClosure* is_alive_non_header = NULL) :
        ReferenceProcessor(is_subject_to_discovery,
        ParallelRefProcEnabled && (ParallelGCThreads > 1), // mt processing
        ParallelGCThreads,   // mt processing degree
        true,                // mt discovery
        ParallelGCThreads,   // mt discovery degree
--- 844,858 ----
  
  PSParallelCompact::IsAliveClosure PSParallelCompact::_is_alive_closure;
  
  bool PSParallelCompact::IsAliveClosure::do_object_b(oop p) { return mark_bitmap()->is_marked(p); }
  
! class PCReferenceProcessor: public ReferenceProcessor {
  public:
!   PCReferenceProcessor(
      BoolObjectClosure* is_subject_to_discovery,
!     BoolObjectClosure* is_alive_non_header) :
        ReferenceProcessor(is_subject_to_discovery,
        ParallelRefProcEnabled && (ParallelGCThreads > 1), // mt processing
        ParallelGCThreads,   // mt processing degree
        true,                // mt discovery
        ParallelGCThreads,   // mt discovery degree
***************
*** 878,888 ****
  
  void PSParallelCompact::post_initialize() {
    ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
    _span_based_discoverer.set_span(heap->reserved_region());
    _ref_processor =
!     new PSReferenceProcessor(&_span_based_discoverer,
                               &_is_alive_closure); // non-header is alive closure
  
    _counters = new CollectorCounters("PSParallelCompact", 1);
  
    // Initialize static fields in ParCompactionManager.
--- 878,888 ----
  
  void PSParallelCompact::post_initialize() {
    ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
    _span_based_discoverer.set_span(heap->reserved_region());
    _ref_processor =
!     new PCReferenceProcessor(&_span_based_discoverer,
                               &_is_alive_closure); // non-header is alive closure
  
    _counters = new CollectorCounters("PSParallelCompact", 1);
  
    // Initialize static fields in ParCompactionManager.
***************
*** 2100,2110 ****
    uint parallel_gc_threads = heap->gc_task_manager()->workers();
    uint active_gc_threads = heap->gc_task_manager()->active_workers();
    TaskQueueSetSuper* qset = ParCompactionManager::stack_array();
    ParallelTaskTerminator terminator(active_gc_threads, qset);
  
!   PSMarkAndPushClosure mark_and_push_closure(cm);
    ParCompactionManager::FollowStackClosure follow_stack_closure(cm);
  
    // Need new claim bits before marking starts.
    ClassLoaderDataGraph::clear_claimed_marks();
  
--- 2100,2110 ----
    uint parallel_gc_threads = heap->gc_task_manager()->workers();
    uint active_gc_threads = heap->gc_task_manager()->active_workers();
    TaskQueueSetSuper* qset = ParCompactionManager::stack_array();
    ParallelTaskTerminator terminator(active_gc_threads, qset);
  
!   PCMarkAndPushClosure mark_and_push_closure(cm);
    ParCompactionManager::FollowStackClosure follow_stack_closure(cm);
  
    // Need new claim bits before marking starts.
    ClassLoaderDataGraph::clear_claimed_marks();