Mojo :: Reactor :: EV (source)

TABLE OF CONTENTS

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 {
  my ($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 {
  my ($reactor, $writable) = @_;
  say $writable ? 'Second handle is writable' : 'Second handle is readable';
})->watch($second, 1, 0);

# Add a timer
$reactor->timer(15 => sub {
  my $reactor = shift;
  $reactor->remove($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 (4.0+).

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);

Restart timer. Note that this method requires an active timer.

is_running

my $bool = $reactor->is_running;

Check if reactor is running.

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. Note that this method can recurse back into the reactor, so you need to be careful.

# 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);

SEE ALSO

Mojolicious, Mojolicious::Guides, http://mojolicio.us.