+ zombies_->merge(std::move(arena));
+}
+
+size_t ThreadCachedArena::totalSize() const {
+ size_t result = sizeof(ThreadCachedArena);
+ for (const auto& arena : arena_.accessAllThreads()) {
+ result += arena.totalSize();
+ }
+ result += zombies_->totalSize() - sizeof(SysArena);
+ return result;