IO::Async::Signal - event callback on receipt of a POSIX signal
IO::Async::Signal
use IO::Async::Signal; use IO::Async::Loop; my $loop = IO::Async::Loop->new(); my $signal = IO::Async::Signal->new( name => "HUP", on_receipt => sub { print "I caught SIGHUP\n"; }, ); $loop->add( $signal ); $loop->loop_forever;
This module provides a class of IO::Async::Notifier which invokes its callback when a particular POSIX signal is received.
IO::Async::Notifier
Multiple objects can be added to a Loop that all watch for the same signal. The callback functions will all be invoked, in no particular order.
Loop
This object may be used in one of two ways; with a callback function, or as a base class.
If the on_receipt key is supplied to the constructor, it should contain a CODE reference to a callback function to be invoked when the signal is received.
on_receipt
$on_receipt->( $self )
If a subclass is built, then it can override the on_receipt method.
$self->on_receipt()
The following named parameters may be passed to new or configure:
new
configure
The name of the signal to watch. This should be a bare name like TERM. Can only be given at construction time.
TERM
CODE reference to callback to invoke when the signal is received. If not supplied, the subclass method will be called instead.
Once constructed, the Signal will need to be added to the Loop before it will work.
Signal
Paul Evans <leonerd@leonerd.org.uk>
To install IO::Async, copy and paste the appropriate command in to your terminal.
cpanm
cpanm IO::Async
CPAN shell
perl -MCPAN -e shell install IO::Async
For more information on module installation, please visit the detailed CPAN module installation guide.