NAME

       Mojo::Reactor::Poll - Low-level event reactor with poll support

SYNOPSIS

         use Mojo::Reactor::Poll;

         # Watch if handle becomes readable or writable
         my $reactor = Mojo::Reactor::Poll->new;
         $reactor->io($first => sub ($reactor, $writable) {
           say $writable ? 'First handle is writable' : 'First handle is readable';
         });

         # Change to watching only if handle becomes writable
         $reactor->watch($first, 0, 1);

         # Turn file descriptor into handle and watch if it becomes readable
         my $second = IO::Handle->new_from_fd($fd, 'r');
         $reactor->io($second => sub ($reactor, $writable) {
           say $writable ? 'Second handle is writable' : 'Second handle is readable';
         })->watch($second, 1, 0);

         # Add a timer
         $reactor->timer(15 => sub ($reactor) {
           $reactor->remove($first);
           $reactor->remove($second);
           say 'Timeout!';
         });

         # Start reactor if necessary
         $reactor->start unless $reactor->is_running;

DESCRIPTION

       Mojo::Reactor::Poll is a low-level event reactor based on IO::Poll.

EVENTS

       Mojo::Reactor::Poll inherits all events from Mojo::Reactor.

METHODS

       Mojo::Reactor::Poll inherits all methods from Mojo::Reactor and implements the following
       new ones.

   again
         $reactor->again($id);
         $reactor->again($id, 0.5);

       Restart timer and optionally change the invocation time. Note that this method requires an
       active timer.

   io
         $reactor = $reactor->io($handle => sub {...});

       Watch handle for I/O events, invoking the callback whenever handle becomes readable or
       writable.

         # Callback will be executed twice if handle becomes readable and writable
         $reactor->io($handle => sub ($reactor, $writable) {
           say $writable ? 'Handle is writable' : 'Handle is readable';
         });

   is_running
         my $bool = $reactor->is_running;

       Check if reactor is running.

   next_tick
         my $undef = $reactor->next_tick(sub {...});

       Execute callback as soon as possible, but not before returning or other callbacks that
       have been registered with this method, always returns "undef".

   one_tick
         $reactor->one_tick;

       Run reactor until an event occurs or no events are being watched anymore.

         # Don't block longer than 0.5 seconds
         my $id = $reactor->timer(0.5 => sub {});
         $reactor->one_tick;
         $reactor->remove($id);

   recurring
         my $id = $reactor->recurring(0.25 => sub {...});

       Create a new recurring timer, invoking the callback repeatedly after a given amount of
       time in seconds.

   remove
         my $bool = $reactor->remove($handle);
         my $bool = $reactor->remove($id);

       Remove handle or timer.

   reset
         $reactor->reset;

       Remove all handles and timers.

   start
         $reactor->start;

       Start watching for I/O and timer events, this will block until "stop" is called or no
       events are being watched anymore.

         # Start reactor only if it is not running already
         $reactor->start unless $reactor->is_running;

   stop
         $reactor->stop;

       Stop watching for I/O and timer events.

   timer
         my $id = $reactor->timer(0.5 => sub {...});

       Create a new timer, invoking the callback after a given amount of time in seconds.

   watch
         $reactor = $reactor->watch($handle, $readable, $writable);

       Change I/O events to watch handle for with true and false values. Note that this method
       requires an active I/O watcher.

         # Watch only for readable events
         $reactor->watch($handle, 1, 0);

         # Watch only for writable events
         $reactor->watch($handle, 0, 1);

         # Watch for readable and writable events
         $reactor->watch($handle, 1, 1);

         # Pause watching for events
         $reactor->watch($handle, 0, 0);

SEE ALSO

       Mojolicious, Mojolicious::Guides, <https://mojolicious.org>.