Mojo::Reactor::EV(3pm)

NAME

Mojo::Reactor::EV - Low-level event reactor with libev support

SYNOPSIS

  use Mojo::Reactor::EV;
  # Watch if handle becomes readable or writable
  my $reactor = Mojo::Reactor::EV->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::EV is a low-level event reactor based on EV (4.32+).

EVENTS

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

METHODS

Mojo::Reactor::EV inherits all methods from Mojo::Reactor::Poll 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.

new

  my $reactor = Mojo::Reactor::EV->new;

Construct a new Mojo::Reactor::EV object.

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.

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);