Hello again guys,
this is some kind of next stage of my previous queston. Namely, I have top block with two flowgraphs, rx_path and tx_path. tx_path produces known number of samples during which time rx_path receivees. As soon as tx_path is finishes I should also stop rx_path, or at least to close certain file sinks. Is there any way to catch that flowgraph (in this case subflograph) is finished with execution and have no more samples to produce?