Method allocate

be/src/runtime/mem-tracker.h:594–600

  ~MemTrackerAllocator() {}

  pointer allocate(size_type n, const_pointer hint = 0) {
    // Ideally we'd use TryConsume() here to enforce the tracker's limit.
    // However, that means throwing bad_alloc if the limit is exceeded, and
    // it's not clear that the rest of Kudu can handle that.
    mem_tracker_->Consume(n * sizeof(T));
    return Alloc::allocate(n, hint);
  }

  void deallocate(pointer p, size_type n) {
    Alloc::deallocate(p, n);