SG::ArenaBase Node1 SG::ArenaBase - m_allocs - m_name - m_mutex + ArenaBase() + ~ArenaBase() + ArenaBase() + operator=() + allocator() + reset() + erase() + report() + stats() + name() - makeAllocator() Node2 SG::Arena - m_header + Arena() + ~Arena() + header() + makeCurrent() Node1->Node2