Mojo::Reactor - Minimalistic low level event reactor
use Mojo::Reactor; # Watch if handle becomes readable or writabe my $reactor = Mojo::Reactor->new; $reactor->io($handle => sub { my ($reactor, $handle, $writable) = @_; say $writable ? 'Handle is writable' : 'Handle is readable'; }); # Add a timer $reactor->timer(15 => sub { my $reactor = shift; $reactor->drop($handle); say 'Timeout!'; }); # Start reactor if necessary $reactor->start unless $reactor->is_running;
Mojo::Reactor is a minimalistic low level event reactor based on IO::Poll and the foundation of Mojo::IOLoop. Mojo::Reactor::EV is a good example for its extensibility. Note that this module is EXPERIMENTAL and might change without warning!
Mojo::Reactor can emit the following events.
error
$reactor->on(error => sub { my ($reactor, $err) = @_; ... });
Emitted safely if an error happens.
$reactor->on(error => sub { my ($reactor, $err) = @_; say "Something very bad happened: $err"; });
Mojo::Reactor inherits all methods from Mojo::EventEmitter and implements the following new ones.
detect
my $class = Mojo::Reactor->detect;
Detect and load the best reactor implementation available, will try the value of the MOJO_REACTOR environment variable or Mojo::Reactor::EV.
MOJO_REACTOR
drop
my $success = $reactor->drop($handle); my $success = $reactor->drop($id);
Drop handle or 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, $handle, $writable) = @_; say $writable ? 'Handle is writable' : 'Handle is readable'; });
is_readable
my $success = $reactor->is_readable($handle);
Quick check if a handle is readable, useful for identifying tainted sockets.
is_running
my $success = $reactor->is_running;
Check if reactor is running.
recurring
my $id = $reactor->recurring(3 => sub {...});
Create a new recurring timer, invoking the callback repeatedly after a given amount of time in seconds.
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.
stop
$reactor->stop;
Stop watching for I/O and timer events.
timer
my $id = $reactor->timer(3 => sub {...});
Create a new timer, invoking the callback after a given amount of time in seconds.
watch
$reactor = $reactor->watch($handle, $read, $write);
Change I/O events to watch handle for.
# 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);
Mojolicious, Mojolicious::Guides, http://mojolicio.us.
To install Mojolicious, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Mojolicious
CPAN shell
perl -MCPAN -e shell install Mojolicious
For more information on module installation, please visit the detailed CPAN module installation guide.