void VM_ParallelGCFailedAllocation::doit() {

  {- -------------------------------------------
  (1) (DTrace のフック点) (JVMTI のフック点)
      (See: SvcGCMarker)
      ---------------------------------------- -}

      SvcGCMarker sgcm(SvcGCMarker::MINOR);

  {- -------------------------------------------
  (1) ParallelScavengeHeap::failed_mem_allocate() を呼び出す.
      ---------------------------------------- -}

      ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
      assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");

      GCCauseSetter gccs(heap, _gc_cause);
      _result = heap->failed_mem_allocate(_size, _is_tlab);

  {- -------------------------------------------
  (1) もし GC_locker のせいで成功しなかった場合は, _gc_locked フィールドを true にしておく.
      (See: _gc_locked)
      ---------------------------------------- -}

      if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
        set_gc_locked();
      }
    }