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ualarm(2)							     ualarm(2)

NAME
       ualarm - set the interval timer

SYNOPSIS
DESCRIPTION
       The  function causes the signal to be generated for the calling process
       after the number of real-time microseconds specified  by	 the  useconds
       argument	 has elapsed. When the interval argument is non-zero, repeated
       timeout notification occurs with a period in microseconds specified  by
       the  interval  argument.	 If  the notification signal, is not caught or
       ignored, the calling process is terminated.

       Implementations may place limitations on the granularity of timer  val‐
       ues.  For  each interval timer, if the requested timer value requires a
       finer granularity than the implementation supports,  the	 actual	 timer
       value will be rounded up to the next supported value.

       Interactions between and either or are unspecified.

RETURN VALUE
       The function returns the number of microseconds remaining from the pre‐
       vious call. If no timeouts are pending or if has	 not  previously  been
       called, returns 0.

ERRORS
       No errors are defined.

APPLICATION USAGE
       The function is a simplified interface to and uses the interval timer.

SEE ALSO
       alarm(2), getitimer(2), sleep(3C), <unistd.h>.

CHANGE HISTORY
       First released in Issue 4, Version 2.

								     ualarm(2)

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