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);