Method try_enqueue_bulk

include/dmlc/concurrentqueue.h:1024–1027

  // Thread-safe.
  template<typename It>
  bool try_enqueue_bulk(It itemFirst, size_t count) {
    if (INITIAL_IMPLICIT_PRODUCER_HASH_SIZE == 0) return false;
    return inner_enqueue_bulk<CannotAlloc>(itemFirst, count);
  }

  // Enqueues several items using an explicit producer token.
  // Does not allocate memory. Fails if not enough room to enqueue.