Method Launched

tensorflow/core/framework/collective.h:308–308

`Launched` unblocks the dependent collective instances by recording that this callee device has completed the critical portion of the collective execution.

  // this callee device has completed the critical portion of the collective
  // execution.
  virtual void Launched(const CollectiveParams& col_params) {}

  // Used to designate an invalid group or instance key.
  static int64 kInvalidId;