src/share/vm/gc_implementation/shenandoah/shenandoahFreeSet.cpp

rev 11463 : Backport Traversal GC

*** 23,32 ****
--- 23,33 ----
  
  #include "precompiled.hpp"
  
  #include "gc_implementation/shenandoah/shenandoahFreeSet.hpp"
  #include "gc_implementation/shenandoah/shenandoahHeap.inline.hpp"
+ #include "gc_implementation/shenandoah/shenandoahTraversalGC.hpp"
  
  ShenandoahFreeSet::ShenandoahFreeSet(ShenandoahHeap* heap,size_t max_regions) :
          _heap(heap),
          _mutator_free_bitmap(max_regions, /* in_resource_area = */ false),
          _collector_free_bitmap(max_regions, /* in_resource_area = */ false),
*** 173,182 ****
--- 174,192 ----
        increase_used(size * HeapWordSize);
      }
  
      // Record actual allocation size
      req.set_actual_size(size);
+ 
+     if (req.is_gc_alloc() && _heap->is_concurrent_traversal_in_progress()) {
+       // Traversal needs to traverse through GC allocs. Adjust TAMS to the new top
+       // so that these allocations appear below TAMS, and thus get traversed.
+       // See top of shenandoahTraversal.cpp for an explanation.
+       _heap->marking_context()->capture_top_at_mark_start(r);
+       _heap->traversal_gc()->traversal_set()->add_region_check_for_duplicates(r);
+       OrderAccess::fence();
+     }
    }
  
    if (result == NULL || has_no_alloc_capacity(r)) {
      // Region cannot afford this or future allocations. Retire it.
      //