Hi Jan
How did you know that I will answer this mail ;)
I need to write a timer signal interrupt that does the timeout of a packet transmission for some error checking. Can I simply do
signal(SIGALRM, sig_alrm ); alarm(max_time_out); rt_sendto( .... )
Don't mix up non-real-time (the first two lines) with real-time (the last line) calls! This is a generic rule for RTAI, not just for RTnet. The only exeption is when running code in a LXRT soft real-time task - but this doesn't work with RTnet for now (see some previous postings).
or this is inappropriate ? I understand that recvfrom has timeout mechanism but it is not called upon sendto, which is hard to track the time eplapsed and build a singal handler
If you want some timer functionality, set up a real-time task and wait the appropriate time (e.g. rt_sleep[_until]). I don't see the problem yet why it is hard to track the elapsed time.
Jan
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