Function GetPoolingLayer

src/caffe/layer_factory.cpp:78–110

// Get pooling layer according to engine.
template <typename Dtype>
shared_ptr<Layer<Dtype> > GetPoolingLayer(const LayerParameter& param) {
  PoolingParameter_Engine engine = param.pooling_param().engine();
  if (engine == PoolingParameter_Engine_DEFAULT) {
    engine = PoolingParameter_Engine_CAFFE;
#ifdef USE_CUDNN
    engine = PoolingParameter_Engine_CUDNN;
#endif
  }
  if (engine == PoolingParameter_Engine_CAFFE) {
    return shared_ptr<Layer<Dtype> >(new PoolingLayer<Dtype>(param));
#ifdef USE_CUDNN
  } else if (engine == PoolingParameter_Engine_CUDNN) {
    if (param.top_size() > 1) {
      LOG(INFO) << "cuDNN does not support multiple tops. "
                << "Using Caffe's own pooling layer.";
      return shared_ptr<Layer<Dtype> >(new PoolingLayer<Dtype>(param));
    }
    // CuDNN assumes layers are not being modified in place, thus
    // breaking our index tracking for updates in some cases in Caffe.
    // Until there is a workaround in Caffe (index management) or
    // cuDNN, use Caffe layer to max pooling, or don't use in place
    // layers after max pooling layers
    if (param.pooling_param().pool() == PoolingParameter_PoolMethod_MAX) {
        return shared_ptr<Layer<Dtype> >(new PoolingLayer<Dtype>(param));
    } else {
        return shared_ptr<Layer<Dtype> >(new CuDNNPoolingLayer<Dtype>(param));
    }
#endif
  } else {
    LOG(FATAL) << "Layer " << param.name() << " has unknown engine.";
    throw;  // Avoids missing return warning
  }
}

REGISTER_LAYER_CREATOR(Pooling, GetPoolingLayer);