Method notify

bolt/exec/Task.cpp:89–102

Satisfies the promises passed to 'activate' and invokes the callback. Does nothing if 'activate' hasn't been called or 'notify' has been called already.

  // Does nothing if 'activate' hasn't been called or 'notify' has been
  // called already.
  void notify() {
    if (active_) {
      for (auto& promise : promises_) {
        promise.setValue();
      }
      promises_.clear();

      if (callback_) {
        callback_();
      }

      active_ = false;
    }
  }

 private:
  bool active_{false};