hotcold2.flow

daigram {
    st1 -> lp1 -> bs11 -> lp1;
    st2 -> lp2 -> bs21 -> lp2;
    st3 -> in1 -> in2 -> in1;
    lp1 -> bs12 [label=after];
    lp2 -> bs22 [label=after];

    st1 [type=start];
    bs11  [type=sync, req="['hot']"];
    lp1 [type=loop, count=3];
    bs12 [type=sync, req="['done']"];

    st2 [type=start];
    bs21  [type=sync, req="['cold']", block="['done']"];
    lp2 [type=loop, count=3];
    bs22 [type=sync, req="['done']"];

    st3 [type=start];
    in1  [type=sync, wait="['hot']", block="['cold']"];
    in2  [type=sync, wait="['cold']", block="['hot']"];

    # For debugging
    class hidden [color = none, style = none, textcolor = white];
    stt -> listener -> logger -> listener [style = "none"];
    listener [type=sync, wait="lambda e : True", class = "hidden", autoformat='false'];
    logger [type=logger, label="Events log", autoformat='false']
    stt [type=start, class = "hidden", autoformat='false'];

}