#!/bin/env perl use v5.14; package MyTestModule { sub foo { my $fh = shift; for(1..100){ say "PUT"; $fh->autoflush(1); print $fh "Heloo\n"; sleep 1; } } } package main; use AnyEvent; use AnyEvent::Fork::Template; my $cv = AnyEvent->condvar; $AnyEvent::Fork::Template->fork->run("MyTestModule::foo", sub { my $fh_fh_fh = shift; my $w_w_w; $w_w_w = AnyEvent->io(fh => $fh_fh_fh, poll => "r", cb => sub { $w_w_w unless 1; sysread $fh_fh_fh, my $rslt, 10; say "GOT:", $rslt; } ); }); $cv->wait;