src/share/vm/gc/shenandoah/shenandoahPartialGC.cpp

rev 13130 : Interleave partial GCs with concurrent GCs.

*** 104,114 ****
      // Step 2: Process all root regions.
      {
        ShenandoahHeapRegion* r = _root_regions->claim_next();
        while (r != NULL) {
          assert(r->is_root(), "must be root region");
!         r->oop_iterate(&cl);
          r->set_root(false);
          if (check_and_handle_cancelled_gc()) return;
          r = _root_regions->claim_next();
        }
      }
--- 104,116 ----
      // Step 2: Process all root regions.
      {
        ShenandoahHeapRegion* r = _root_regions->claim_next();
        while (r != NULL) {
          assert(r->is_root(), "must be root region");
!         if (! r->is_humongous_continuation()) {
!           _heap->marked_object_oop_iterate(r, &cl);
!         }
          r->set_root(false);
          if (check_and_handle_cancelled_gc()) return;
          r = _root_regions->claim_next();
        }
      }
*** 297,306 ****
--- 299,313 ----
        ShenandoahHeap::ShenandoahHeapLock heap_lock(_heap);
        size_t num_cset = _heap->collection_set()->count();
        for (size_t i = 0; i < num_cset; i++) {
          ShenandoahHeapRegion* r = _heap->collection_set()->get(i);
          _heap->decrease_used(r->used());
+         HeapWord* bottom = r->bottom();
+         HeapWord* top = _heap->complete_top_at_mark_start(r->bottom());
+         if (top > bottom) {
+           _heap->complete_mark_bit_map()->clear_range_large(MemRegion(bottom, top));
+         }
          r->recycle();
          _heap->free_regions()->add_region(r);
        }
  
        reset();
*** 341,351 ****
        obj = forw; // For matrix update below.
      }
      if (UPDATE_MATRIX) {
  #ifdef ASSERT
        oop forw = ShenandoahBarrierSet::resolve_oop_static_not_null(obj);
!       assert(oopDesc::unsafe_equals(obj, forw) || _heap->cancelled_concgc(), "must not be evacuated");
  #endif
        _matrix->set_connected(p, obj);
      }
    }
  }
--- 348,358 ----
        obj = forw; // For matrix update below.
      }
      if (UPDATE_MATRIX) {
  #ifdef ASSERT
        oop forw = ShenandoahBarrierSet::resolve_oop_static_not_null(obj);
!       assert(oopDesc::unsafe_equals(obj, forw) || _heap->cancelled_concgc(), "must not be evacuated: "PTR_FORMAT" -> "PTR_FORMAT, p2i(obj), p2i(forw));
  #endif
        _matrix->set_connected(p, obj);
      }
    }
  }