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UALARM(3)                  Library Functions Manual                  UALARM(3)



NAME
       ualarm - schedule signal after interval in microseconds

SYNOPSIS
       unsigned ualarm(value, interval)
       unsigned value;
       unsigned interval;

DESCRIPTION
       This is a simplified interface to setitimer() (see getitimer(2)).

       ualarm()  sends signal SIGALRM, see signal(3V), to the invoking process
       in a number of microseconds given by the value argument.  Unless caught
       or ignored, the signal terminates the process.

       If  the  interval argument is non-zero, the SIGALRM signal will be sent
       to the process every interval microseconds after the timer expires (for
       instance, after value microseconds have passed).

       Because  of scheduling delays, resumption of execution of when the sig-
       nal is caught may be delayed an arbitrary amount.  The longest specifi-
       able delay time is 2147483647 microseconds.

       The  return  value  is  the  amount of time previously remaining in the
       alarm clock.

SEE ALSO
       getitimer(2),   sigpause(2V),   sigvec(2),    alarm(3V),    signal(3V),
       sleep(3V), usleep(3)



                                6 October 1987                       UALARM(3)