@Override
  public MemoryThresholdInfo getAtomicThresholdInfo() {
    if (!isMemoryThresholdReached()) {
      return MemoryThresholdInfo.getNotReached();
    }
    synchronized (memoryThresholdReachedMembers) {
      return new MemoryThresholdInfo(isMemoryThresholdReached(),
          new HashSet<>(memoryThresholdReachedMembers));
    }
  }
@param idm member whose threshold has been exceeded
geode-core/src/main/java/org/apache/geode/internal/cache/DistributedRegion.java