finish

  $loop->on(finish => sub ($loop) {...});

Emitted when the event loop wants to shut down gracefully and is just waiting for all existing connections to be closed.

reset

  $loop->on(reset => sub ($loop) {...});

Emitted when the event loop is reset, this usually happens after the process is forked to clean up resources that cannot be shared.

max_accepts

  my $max = $loop->max_accepts;
  $loop   = $loop->max_accepts(1000);

The maximum number of connections this event loop is allowed to accept, before shutting down gracefully without interrupting existing connections, defaults to 0. Setting the value to 0 will allow this event loop to accept new connections indefinitely. Note that up to half of this value can be subtracted randomly to improve load balancing between multiple server processes, and to make sure that not all of them restart at the same time.

max_connections

  my $max = $loop->max_connections;
  $loop   = $loop->max_connections(100);

The maximum number of accepted connections this event loop is allowed to handle concurrently, before stopping to accept new incoming connections, defaults to 1000.

reactor

  my $reactor = $loop->reactor;
  $loop       = $loop->reactor(Mojo::Reactor->new);

Low-level event reactor, usually a Mojo::Reactor::Poll or Mojo::Reactor::EV object with a default subscriber to the event "error" in Mojo::Reactor.

  # Watch if handle becomes readable or writable
  Mojo::IOLoop->singleton->reactor->io($handle => sub ($reactor, $writable) {
    say $writable ? 'Handle is writable' : 'Handle is readable';
  });

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

  # Remove handle again
  Mojo::IOLoop->singleton->reactor->remove($handle);

acceptor

  my $server = Mojo::IOLoop->acceptor($id);
  my $server = $loop->acceptor($id);
  my $id     = $loop->acceptor(Mojo::IOLoop::Server->new);

Get Mojo::IOLoop::Server object for id or turn object into an acceptor.

client

  my $id = Mojo::IOLoop->client(address => '127.0.0.1', port => 3000, sub {...});
  my $id = $loop->client(address => '127.0.0.1', port => 3000, sub {...});
  my $id = $loop->client({address => '127.0.0.1', port => 3000} => sub {...});

Open a TCP/IP or UNIX domain socket connection with Mojo::IOLoop::Client and create a stream object (usually Mojo::IOLoop::Stream), takes the same arguments as "connect" in Mojo::IOLoop::Client.

is_running

  my $bool = Mojo::IOLoop->is_running;
  my $bool = $loop->is_running;

Check if event loop is running.

next_tick

  my $undef = Mojo::IOLoop->next_tick(sub ($loop) {...});
  my $undef = $loop->next_tick(sub ($loop) {...});

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

  # Perform operation on next reactor tick
  Mojo::IOLoop->next_tick(sub ($loop) {...});

one_tick

  Mojo::IOLoop->one_tick;
  $loop->one_tick;

Run event loop until an event occurs.

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

recurring

  my $id = Mojo::IOLoop->recurring(3 => sub ($loop) {...});
  my $id = $loop->recurring(0 => sub ($loop) {...});
  my $id = $loop->recurring(0.25 => sub ($loop) {...});

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

  # Perform operation every 5 seconds
  Mojo::IOLoop->recurring(5 => sub ($loop) {...});

remove

  Mojo::IOLoop->remove($id);
  $loop->remove($id);

Remove anything with an id, connections will be dropped gracefully by allowing them to finish writing all data in their write buffers.

reset

  Mojo::IOLoop->reset;
  $loop->reset;
  $loop->reset({freeze => 1});

Remove everything and stop the event loop.

These options are currently available:

freeze

  freeze => 1
    

Freeze the current state of the event loop in time before resetting it. This will prevent active connections from getting closed immediately, which can help with many unintended side effects when processes are forked. Note that this option is EXPERIMENTAL and might change without warning!

server

  my $id = Mojo::IOLoop->server(port => 3000, sub {...});
  my $id = $loop->server(port => 3000, sub {...});
  my $id = $loop->server({port => 3000} => sub {...});

Accept TCP/IP and UNIX domain socket connections with Mojo::IOLoop::Server and create stream objects (usually Mojo::IOLoop::Stream, takes the same arguments as "listen" in Mojo::IOLoop::Server.

  # Listen on random port
  my $id = Mojo::IOLoop->server({address => '127.0.0.1'} => sub ($loop, $stream, $id) {...});
  my $port = Mojo::IOLoop->acceptor($id)->port;

singleton

  my $loop = Mojo::IOLoop->singleton;

The global Mojo::IOLoop singleton, used to access a single shared event loop object from everywhere inside the process.

  # Many methods also allow you to take shortcuts
  Mojo::IOLoop->timer(2 => sub { Mojo::IOLoop->stop });
  Mojo::IOLoop->start;

  # Restart active timer
  my $id = Mojo::IOLoop->timer(3 => sub { say 'Timeout!' });
  Mojo::IOLoop->singleton->reactor->again($id);

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

start

  Mojo::IOLoop->start;
  $loop->start;

Start the event loop, this will block until "stop" is called. Note that some reactors stop automatically if there are no events being watched anymore.

  # Start event loop only if it is not running already
  Mojo::IOLoop->start unless Mojo::IOLoop->is_running;

stop

  Mojo::IOLoop->stop;
  $loop->stop;

Stop the event loop, this will not interrupt any existing connections and the event loop can be restarted by running "start" again.

stop_gracefully

  Mojo::IOLoop->stop_gracefully;
  $loop->stop_gracefully;

Stop accepting new connections and wait for already accepted connections to be closed, before stopping the event loop.

stream

  my $stream = Mojo::IOLoop->stream($id);
  my $stream = $loop->stream($id);
  my $id     = $loop->stream(Mojo::IOLoop::Stream->new);

Get Mojo::IOLoop::Stream object for id or turn object into a connection.

  # Increase inactivity timeout for connection to 300 seconds
  Mojo::IOLoop->stream($id)->timeout(300);

subprocess

  my $subprocess = Mojo::IOLoop->subprocess;
  my $subprocess = $loop->subprocess;
  my $subprocess = $loop->subprocess(sub ($subprocess) {...}, sub ($subprocess, $err, @results) {...});

Build Mojo::IOLoop::Subprocess object to perform computationally expensive operations in subprocesses, without blocking the event loop. Callbacks will be passed along to "run" in Mojo::IOLoop::Subprocess.

  # Operation that would block the event loop for 5 seconds
  Mojo::IOLoop->subprocess->run_p(sub {
    sleep 5;
    return '♥', 'Mojolicious';
  })->then(sub (@results) {
    say "I $results[0] $results[1]!";
  })->catch(sub ($err) {
    say "Subprocess error: $err";
  });

timer

  my $id = Mojo::IOLoop->timer(3 => sub ($loop) {...});
  my $id = $loop->timer(0 => sub ($loop) {...});
  my $id = $loop->timer(0.25 => sub ($loop) {...});

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

  # Perform operation in 5 seconds
  Mojo::IOLoop->timer(5 => sub ($loop) {...});