IO::Async::Timer::Absolute(3pm) - Man pages

IO::Async::Timer::AbsoUser(Contributed Perl DocIO::Async::Timer::Absolute(3pm)

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

SYNOPSIS
          use IO::Async::Timer::Absolute;

          use POSIX qw( mktime );

          use IO::Async::Loop;
          my $loop = IO::Async::Loop->new;

          my @time = gmtime;

          my $timer = IO::Async::Timer::Absolute->new(
             time => mktime( 0, 0, 0, $time[3]+1, $time[4], $time[5] ),

             on_expire => sub {
                print "It's midnight\n";
                $loop->stop;
             },
          );

          $loop->add( $timer );

          $loop->run;

DESCRIPTION
       This subclass of IO::Async::Timer implements one-shot events at a fixed
       time in the future. The object waits for a given timestamp, and invokes
       its callback at that point in the future.

       For a "Timer" object that waits for a delay relative to the time it is
       started, see instead IO::Async::Timer::Countdown.

EVENTS
       The following events are invoked, either using subclass methods or CODE
       references in parameters:

   on_expire
       Invoked when the timer expires.

PARAMETERS
       The following named parameters may be passed to "new" or "configure":

   on_expire => CODE
       CODE reference for the "on_expire" event.

   time => NUM
       The epoch time at which the timer will expire.

       Once constructed, the timer object will need to be added to the "Loop"
       before it will work.

       Unlike other timers, it does not make sense to "start" this object,
       because its expiry time is absolute, and not relative to the time it is
       started.

AUTHOR
       Paul Evans <leonerd@leonerd.org.uk>

perl v5.34.0                      2022-08-19   IO::Async::Timer::Absolute(3pm)

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