PerfMon::MallocStats Node1 PerfMon::MallocStats + MallocStats() + refresh() + from_system_nmmap() + free_chunks() + used() + not_used() + releasable() + max_allocated() + fastbin_blocks() + fastbin_free() + from_system_mmap() + mmap_chunks() + from_system_total() + repr() + dump() Node2 struct Node2->Node1 -m_infos