private int getElementCountFromTinyFreeLists() {
    int fragmentCount = 0;
    for (int i = 0; i < tinyFreeLists.length(); i++) {
      OffHeapStoredObjectAddressStack cl = tinyFreeLists.get(i);
      if (cl != null) {
        fragmentCount += cl.size();
      }
    }
    return fragmentCount;
  }
Defragments memory and returns true if enough memory to allocate chunkSize is freed. Otherwise
returns false; Unlike the defragment method this method is not thread safe and does not check
for a concurrent defragment. It should only be called by defragment and unit tests.
geode-core/src/main/java/org/apache/geode/internal/offheap/FreeListManager.java