Interrupt handlers in Perl are able to modify package variables, so your handler could change a flag. If a designated package variable contains an object reference, then your handler could change the value of a field in that object.

For your situation, may need to use the :perlio layer with the file handles associated with the pipes.

See Perl IPC Signals, including the discussion of Deferred Signals and Interrupting IO

In reply to Re: Spooky actions from a signal handler possible? by RonW
in thread Spooky actions from a signal handler possible? by belg4mit

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