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

NAME SYNOPSIS DESCRIPTION EVENTS METHODS again io is_running next_tick one_tick recurring remove reset start stop timer watch SEE ALSO

NAME

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

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);