Method from_buffer

oneflow/api/cpp/framework/tensor.cpp:84–101

}

Tensor Tensor::from_buffer(const void* buffer, const Shape& shape, const Device& device,
                           const DType& dtype) {
  Tensor tensor(shape, device, dtype);
  std::shared_ptr<of::one::LocalTensor> local_tensor =
      tensor.tensor_->AsLocalTensor().GetPtrOrThrow();
  of::PhysicalRun([&](of::InstructionsBuilder* builder) -> of::Maybe<void> {
    return builder->AccessBlobByCallback(
        local_tensor,
        [buffer, shape, dtype](of::ep::Stream* stream,
                               const std::shared_ptr<of::vm::EagerBlobObject>& eager_blob_object) {
          of::AutoMemcpy(stream, eager_blob_object->mut_dptr(), buffer,
                         shape.Count(0) * GetDTypeSize(dtype), eager_blob_object->mem_case(),
                         of::memory::MakeHostMemCase());
        },
        "mut");
  }).GetOrThrow();
  return tensor;
}

template<typename T>
void Tensor::copy_to(T* buffer) const {