NAME Mojo::Reactor::UV - UV backend for Mojo::Reactor SYNOPSIS use Mojo::Reactor::UV; # Watch if handle becomes readable or writable my $reactor = Mojo::Reactor::UV->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; # Or in an application using Mojo::IOLoop use Mojo::Reactor::UV; use Mojo::IOLoop; # Or in a Mojolicious application $ MOJO_REACTOR=Mojo::Reactor::UV hypnotoad script/myapp DESCRIPTION Mojo::Reactor::UV is an event reactor for Mojo::IOLoop that uses libuv. The usage is exactly the same as other Mojo::Reactor implementations such as Mojo::Reactor::Poll. Mojo::Reactor::UV will be used as the default backend for Mojo::IOLoop if it is loaded before Mojo::IOLoop or any module using the loop. However, when invoking a Mojolicious application through morbo or hypnotoad, the reactor must be set as the default by setting the MOJO_REACTOR environment variable to Mojo::Reactor::UV. EVENTS Mojo::Reactor::UV inherits all events from Mojo::Reactor::Poll. METHODS Mojo::Reactor::UV inherits all methods from Mojo::Reactor::Poll and implements the following new ones. new my $reactor = Mojo::Reactor::UV->new; Construct a new Mojo::Reactor::UV object. 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 invoked twice if handle becomes readable and writable $reactor->io($handle => sub { my ($reactor, $writable) = @_; say $writable ? 'Handle is writable' : 'Handle is readable'; }); 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. remove my $bool = $reactor->remove($handle); my $bool = $reactor->remove($id); Remove handle or timer. reset $reactor->reset; Remove all handles and timers. 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); CAVEATS When using Mojo::IOLoop with UV, the event loop must be controlled by Mojo::IOLoop or Mojo::Reactor::UV, such as with the methods "start" in Mojo::IOLoop, "stop" in Mojo::IOLoop, and "one_tick". Starting or stopping the event loop through UV will not provide required functionality to Mojo::IOLoop applications. Care should be taken that file descriptors are not closed while being watched by the reactor. They can be safely closed after calling "watch" with readable and writable set to 0, or after removing the handle with "remove" or "reset". On windows, libuv can only watch sockets, not regular filehandles. BUGS Report any issues on the public bugtracker. AUTHOR Dan Book, dbook@cpan.org COPYRIGHT AND LICENSE Copyright 2015, Dan Book. This library is free software; you may redistribute it and/or modify it under the terms of the Artistic License version 2.0. SEE ALSO Mojolicious, Mojo::IOLoop, UV