197   if (arena_head_ != nullptr) {  in BytesUsed()
198     for (Arena* cur_arena = arena_head_->next_; cur_arena != nullptr;  in BytesUsed()
211     arena_head_(nullptr) {  in ArenaAllocator()
215   if (arena_head_ != nullptr) {  in UpdateBytesAllocated()
218     arena_head_->bytes_allocated_ = ptr_ - begin_;  in UpdateBytesAllocated()
268   pool_->FreeArenaChain(arena_head_);  in ~ArenaAllocator()
278     DCHECK(arena_head_ != nullptr);  in AllocFromNewArena()
280     new_arena->next_ = arena_head_->next_;  in AllocFromNewArena()
281     arena_head_->next_ = new_arena;  in AllocFromNewArena()
284     new_arena->next_ = arena_head_;  in AllocFromNewArena()
285     arena_head_ = new_arena;  in AllocFromNewArena()
299   if (ret == arena_head_->Begin()) {  in AllocFromNewArenaWithMemoryTool()
304     DCHECK(arena_head_->next_ != nullptr);  in AllocFromNewArenaWithMemoryTool()
305     DCHECK(ret == arena_head_->next_->Begin());  in AllocFromNewArenaWithMemoryTool()
306     DCHECK_EQ(bytes, arena_head_->next_->GetBytesAllocated());  in AllocFromNewArenaWithMemoryTool()
307     noaccess_end = arena_head_->next_->End();  in AllocFromNewArenaWithMemoryTool()
317   for (const Arena* cur_arena = arena_head_; cur_arena != nullptr; cur_arena = cur_arena->next_) {  in Contains()
343       (arena_head_ == nullptr) ? 0 : (end_ - ptr_) - arena_head_->RemainingSpace();  in GetMemStats()
344   return MemStats("ArenaAllocator", this, arena_head_, lost_bytes_adjustment);  in GetMemStats()