Mojo::Reactor::Epoll - epoll backend for Mojo::Reactor
use Mojo::Reactor::Epoll; # Watch if handle becomes readable or writable my $reactor = Mojo::Reactor::Epoll->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::Epoll; use Mojo::IOLoop; # Or in a Mojolicious application $ MOJO_REACTOR=Mojo::Reactor::Epoll hypnotoad script/myapp
Mojo::Reactor::Epoll is an event reactor for Mojo::IOLoop that uses the epoll(7) Linux subsystem. The usage is exactly the same as other Mojo::Reactor implementations such as Mojo::Reactor::Poll. Mojo::Reactor::Epoll 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::Epoll.
epoll(7)
MOJO_REACTOR
Mojo::Reactor::Epoll
Mojo::Reactor::Epoll inherits all events from Mojo::Reactor.
Mojo::Reactor::Epoll inherits all methods from Mojo::Reactor and implements the following new ones.
$reactor->again($id);
Restart timer. Note that this method requires an active timer.
$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'; });
my $bool = $reactor->is_running;
Check if reactor is running.
my $undef = $reactor->next_tick(sub {...});
Invoke callback as soon as possible, but not before returning or other callbacks that have been registered with this method, always returns undef.
undef
$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);
my $id = $reactor->recurring(0.25 => sub {...});
Create a new recurring timer, invoking the callback repeatedly after a given amount of time in seconds.
my $bool = $reactor->remove($handle); my $bool = $reactor->remove($id);
Remove handle or timer.
$reactor->reset;
Remove all handles and timers.
$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;
$reactor->stop;
Stop watching for I/O and timer events.
my $id = $reactor->timer(0.5 => sub {...});
Create a new timer, invoking the callback after a given amount of time in seconds.
$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);
Report any issues on the public bugtracker.
Dan Book, dbook@cpan.org
dbook@cpan.org
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.
Mojolicious, Mojo::IOLoop, Linux::Epoll
To install Mojo::Reactor::Epoll, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Mojo::Reactor::Epoll
CPAN shell
perl -MCPAN -e shell install Mojo::Reactor::Epoll
For more information on module installation, please visit the detailed CPAN module installation guide.