threads

hi folks
I got program with more processes. It looks like just one (the firs spawned) of them is running without problem, the others run for while and then do nothing. But everything runs fine when I try to run it in dbg. Wtf?
J.

Can you give a little more info than that? You're not giving us very much to go on here. In what way are the other threads failing? Can you post some code that illustrates the problem? One thing to try is to have each thread print out a hello message to ensure it's been spawned correctly. If the hello message doesn't print, do you get some error from pthread_create (I'm assuming you're using pthreads here since you didn't tell us)?

Beyond that, more info needed.

well, it's typical client - server program, where server creates processes to handle communication with clients. Processes are spawned correctly, they print some stuff few times, but after some time only the first spawned is running. The rest look like sleeping or suspended.
J.

and yes, I'm using pthreads, it doesn't return any error.
J.

Are they sleeping waiting on incoming connections (selecting or polling on a file descriptor or group of file descriptors)? If so, that sounds like normal behavior based on what you've set about the app.

ok, I solved that problem using sched_yield() command. It looks like one of the threads was not willing to give up it's CPU time....
J.