Function CheckValidCUDABuffer

python/mod_cvcuda/nvcv/ExternalBuffer.cpp:33–47

using namespace py::literals;

static void CheckValidCUDABuffer(const void *ptr)
{
    if (ptr == nullptr)
    {
        throw std::runtime_error("NULL CUDA buffer not accepted");
    }

    cudaPointerAttributes attrs = {};
    cudaError_t           err   = cudaPointerGetAttributes(&attrs, ptr);
    cudaGetLastError(); // reset the cuda error (if any)
    if (err != cudaSuccess || attrs.type == cudaMemoryTypeUnregistered)
    {
        throw std::runtime_error("Buffer is not CUDA-accessible");
    }
}

static std::string ToFormatString(const DLDataType &dtype)
{