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1) When timeout occur (errno = EINTR), the program will continue to get the timeout error without at least waiting for timeout to occur again (which is set to 10 secs). Below is a code snap shot.
That's strange. I've never seen this happen. Do you have other software running that might be sending you a SIGALRM signal? Or another signal?
EINTR means that the API call was interrupted by a signal, but it isn't necessarily the signal that alarm() generated.
The signal number that's received is passed as a parm to your signal handler, you could try printing it out to see whether it's SIGALRM or whether it's something else.
I can think of things you could try to work around the problem, but I can't think of anything (aside from someone calling you with a signal) that would cause the problem you're experiencing.
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