Question

i couldnt make my program sleep() after using kill(pid,SIGTERM)
what can i do ?

The code i’m using:

kill(PID_of_Process_to_be_killed,SIGTERM);
sleep(5); --> this is not working
sleep(5); --> this is working

the solution for now is:

kill(PID_of_Process_to_be_killed,SIGTERM);
sleep(sleep(5));

but why the first sleep after kill return 0 ?

Answer 1

Your sleep() call may be terminating early due to receiving a signal. Check the return value. If it’s positive, you might want to sleep() again on that value. From http://www.manpagez.com/man/3/Sleep/:

If the sleep() function returns because the requested time has elapsed,
the value returned will be zero. If the sleep() function returns due to
the delivery of a signal, the value returned will be the unslept amount
(the requested time minus the time actually slept) in seconds