1IO::Async::Signal(3)  User Contributed Perl Documentation IO::Async::Signal(3)
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NAME

6       "IO::Async::Signal" - event callback on receipt of a POSIX signal
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SYNOPSIS

9        use IO::Async::Signal;
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11        use IO::Async::Loop;
12        my $loop = IO::Async::Loop->new;
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14        my $signal = IO::Async::Signal->new(
15           name => "HUP",
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17           on_receipt => sub {
18               print "I caught SIGHUP\n";
19           },
20        );
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22        $loop->add( $signal );
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24        $loop->run;
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DESCRIPTION

27       This subclass of IO::Async::Notifier invokes its callback when a
28       particular POSIX signal is received.
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30       Multiple objects can be added to a "Loop" that all watch for the same
31       signal.  The callback functions will all be invoked, in no particular
32       order.
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EVENTS

35       The following events are invoked, either using subclass methods or CODE
36       references in parameters:
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38   on_receipt
39       Invoked when the signal is received.
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PARAMETERS

42       The following named parameters may be passed to "new" or "configure":
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44   name => STRING
45       The name of the signal to watch. This should be a bare name like
46       "TERM". Can only be given at construction time.
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48   on_receipt => CODE
49       CODE reference for the "on_receipt" event.
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51       Once constructed, the "Signal" will need to be added to the "Loop"
52       before it will work.
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AUTHOR

55       Paul Evans <leonerd@leonerd.org.uk>
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59perl v5.30.1                      2020-01-30              IO::Async::Signal(3)