Class FrameAndIter

tensorflow/core/framework/control_flow.h:32–46

For the purpose of control flow, every tensor produced by TensorFlow is conceptually tagged by a 'FrameAndIter'. FrameAndIter consists of a 'frame_id' and an 'iter_id'. The tensor value it represents is produced in the frame with frame_id at the iteration of iter_id.

// 'frame_id' and an 'iter_id'. The tensor value it represents is produced
// in the frame with frame_id at the iteration of iter_id.
struct FrameAndIter {
  uint64 frame_id = kIllegalFrameId;
  int64 iter_id = kIllegalIterId;

  FrameAndIter() {}

  FrameAndIter(uint64 frame, int64 iter) {
    frame_id = frame;
    iter_id = iter;
  }

  bool operator==(const FrameAndIter& other) const {
    return (frame_id == other.frame_id && iter_id == other.iter_id);
  }
};

struct FrameAndIterHash {
  size_t operator()(const FrameAndIter& key) const {