Function

Summary

Schedules a timer to expire after a given amount of time.

Signature

schedule-timer-milliseconds timer
 absolute-expiration-time

          &optional repeat-time
 => timer

Package

mp

Arguments

timer

A timer

absolute-expiration-time

A non-negative real

repeat-time

A non-negative real

Values

timer

A timer

Description

The schedule-timer-milliseconds function schedules a timer to expire at a given time after the start of the program. The timer argument is a timer returned by make-timer or make-named-timer. The absolute-expiration-time argument is a non-negative real number of milliseconds since the start of the program at which the timer is to expire. If repeat-time is specified, it is a non-negative real number of milliseconds that specifies a repeat interval. Each time the timer expires, it is rescheduled to expire after this repeat interval.

If the timer is already scheduled to expire at the time this function is called, it is rescheduled to expire at the time specified by the absolute-expiration-time argument. If that argument is nil , the timer is not rescheduled, but the repeat interval is set to the interval specified by the repeat-time argument.

The function schedule-timer-relative-milliseconds schedules a timer to expire at a time relative to the call to that function.

Example

The following example schedules a timer to expire 15 minutes after the start of the program and every 5 minutes thereafter.

(setq timer

      (mp:make-timer 'print 10 *standard-output*))

#<Time Event : PRINT> (mp:schedule-timer-milliseconds timer 900000 300000) #<Time Event : PRINT>

See also

make-named-timer
make-timer
schedule-timer
schedule-timer-relative
schedule-timer-relative-milliseconds
timer-expired-p
timer-name
unschedule-timer