15 Dec 2021 22:57:24 UTC
- Distribution: IO-Async
- Module version: 0.801
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IO::Async::Timer- base class for Notifiers that use timed delays
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
$timer = IO::Async::Timer->new( %args )
Constructs a particular subclass of
IO::Async::Timerobject, 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
countdownbut more types may be added in the future.
Once constructed, the
Timerwill need to be added to the
Loopbefore it will work. It will also need to be started by the
$running = $timer->is_running
Returns true if the Timer has been started, and has not yet expired, or been stopped.
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,
$timeris returned. This may be useful for starting timers at construction time:
$loop->add( IO::Async::Timer->new( ... )->start );
Stops the Timer if it is running. If it has not yet been added to the
Loopbut there is a start pending, this will cancel it.
Paul Evans <email@example.com>