Method Wait

cpp/src/arrow/io/caching.cc:234–240

  }

  virtual Future<> Wait() {
    std::vector<Future<>> futures;
    for (auto& entry : entries) {
      futures.emplace_back(MaybeRead(&entry));
    }
    return AllComplete(futures);
  }

  // Return a Future that completes when the given ranges have been read.
  virtual Future<> WaitFor(std::vector<ReadRange> ranges) {