Method GetTextDescription

be/src/util/malloc-util-libc.h:56–60

  }

  std::string GetTextDescription() const override {
    std::stringstream ss;
    ss << GetName() << " doesn't support a text description.";
    return ss.str();
  }

  Status RegisterMemoryMetrics(MetricGroup* metrics) override {
    LibcMallocMetric::RESIDENT_SET_SIZE = metrics->RegisterMetric(