NAME

       "IO::Async::Timer" - base class for Notifiers that use timed delays

DESCRIPTION

       This module provides a subclass of IO::Async::Notifier for implementing notifiers that use
       timed delays. For specific implementations, see one of the subclasses:

       •       IO::Async::Timer::Absolute - event callback at a fixed future time

       •       IO::Async::Timer::Countdown - event callback after a fixed delay

       •       IO::Async::Timer::Periodic - event callback at regular intervals

CONSTRUCTOR

   new
          $timer = IO::Async::Timer->new( %args )

       Constructs a particular subclass of "IO::Async::Timer" object, and returns it. This
       constructor is provided for backward compatibility to older code which doesn't use the
       subclasses. New code should directly construct a subclass instead.

       mode => STRING
               The type of timer to create. Currently the only allowed mode is "countdown" but
               more types may be added in the future.

       Once constructed, the "Timer" will need to be added to the "Loop" before it will work. It
       will also need to be started by the "start" method.

METHODS

   is_running
          $running = $timer->is_running

       Returns true if the Timer has been started, and has not yet expired, or been stopped.

   start
          $timer->start

       Starts the Timer. Throws an error if it was already running.

       If the Timer is not yet in a Loop, the actual start will be deferred until it is added.
       Once added, it will be running, and will expire at the given duration after the time it
       was added.

       As a convenience, $timer is returned. This may be useful for starting timers at
       construction time:

        $loop->add( IO::Async::Timer->new( ... )->start );

   stop
          $timer->stop

       Stops the Timer if it is running. If it has not yet been added to the "Loop" but there is
       a start pending, this will cancel it.

AUTHOR

       Paul Evans <leonerd@leonerd.org.uk>