<div dir="ltr"><div><div>Hi Zhang,<br><br></div>The scenario you're describing would lead to infinite recursion, so you should probably go about solving it some other way. Could you perhaps describe the problem you're trying to solve?<br><br></div>Dunk<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 28 April 2015 at 16:30, zhang007z <span dir="ltr"><<a href="mailto:zhang007z@gmail.com" target="_blank">zhang007z@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">please look at carefully, I say In same element .don't different element. at<br>
downflow type case, upflow element src pad calls chainfunc function of<br>
downflow element sink pad to transfer data to downflow element sink pad .<br>
then how do downflow element transferes data from itself sink pad to itself<br>
src pad after I deal this data in chainfunc function ?<br>
<br>
anybody have any idea for me.   thank you very much for spending your time<br>
on my this stupid question .<br>
<br>
<br>
<br>
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