Method setDestructionCallback

bolt/common/memory/MemoryPool.cpp:1436–1446

      isRoot(),
      "Only root memory pool allows to set destruction callbacks: {}",
      name_);
  std::lock_guard<std::mutex> l(mutex_);
  BOLT_CHECK_NULL(destructionCb_);
  destructionCb_ = callback;
}

void MemoryPoolImpl::testingSetCapacity(int64_t bytes) {
  if (parent_ != nullptr) {
    return toImpl(parent_)->testingSetCapacity(bytes);
  }
  std::lock_guard<std::mutex> l(mutex_);
  capacity_ = bytes;
}