size_t* len);

// On success, dequeues a tensor from a TF-managed FifoQueue given by
// `tensor_id`, associated with `session`. There must be a graph node named
// "fifo_queue_dequeue_<tensor_id>", to be executed by this API call.

// Caller must call TF_DeleteTensor() over the returned tensor. If the queue is
// empty, this call is blocked.
//

            << session->graph->graph.ToGraphDefDebug().DebugString();
  }

  TF_Operation* dequeue_op = TF_GraphOperationByName(
      session->graph,
      tensorflow::strings::StrCat("fifo_queue_dequeue_", tensor_id).c_str());
  if (dequeue_op == nullptr) {
    status->status = tensorflow::errors::Internal(
        "Unable to find the dequeue node in the TF graph.");
    return nullptr;
  }

Atlas7, Ben Barsdell, Bill Prin, Bo Wang, Brett Koonce, Cameron Thomas, Carl
Thomé, Cem Eteke, cglewis, Changming Sun, Charles Shenton, Chi-Hung, Chris
Donahue, Chris Filo Gorgolewski, Chris Hoyean Song, Chris Tava, Christian Grail,
Christoph Boeddeker, cinqS, Clayne Robison, codrut3, concerttttt, CQY, Dan
Becker, Dan Jarvis, Daniel Zhang, David Norman, dmaclach, Dmitry Trifonov,