Method FreeBlock

src/core/device/device.cc:104–109

TODO(wangwei) return Block to the memory manager

// TODO(wangwei) return Block to the memory manager
void Device::FreeBlock(Block* block) {
  if (block != nullptr) {
    Free(block->mutable_data());
    delete block;
  }
}

void Device::CopyDataToFrom(Block* dst, Block* src, size_t nBytes,
                            CopyDirection direct, int dst_offset,