private void UpdateCacheIfNeeded(long position, ITensorValueGetter[] srcTensorGetters, string[] activeOutputColNames, OutputCache outputCache)
{
if (outputCache.Position != position)
{
if (_parent.Graph.graph_key != tf.get_default_graph().graph_key)
{
_parent.Session.graph.as_default();
}
Runner runner = new Runner(_parent.Session, _parent.Inputs.ToArray(), _parent.Outputs.ToArray());
// Feed inputs to the graph.
for (int i = 0; i < _parent.Inputs.Length; i++)
{
runner.AddInput(srcTensorGetters[i].GetTensor(), i);
}
// Execute the graph.
var tensors = runner.Run();
runner.Dispose();
Contracts.Assert(tensors.Length > 0);
for (int j = 0; j < activeOutputColNames.Length; j++)
{
if (outputCache.Outputs.TryGetValue(activeOutputColNames[j], out Tensor outTensor))
{
outTensor.Dispose();
}
outputCache.Outputs[activeOutputColNames[j]] = tensors[j];
}
outputCache.Position = position;
}
}
