1#!/usr/bin/perl -w 2# -*- perl -*- 3 4# 5# $Id: $ 6# Author: Slaven Rezic 7# 8 9use strict; 10 11use Config qw(%Config); 12 13BEGIN { 14 if (!eval q{ 15 use Test::More; 16 1; 17 }) { 18 print "1..0 # skip no Test::More module\n"; 19 exit; 20 } 21} 22 23BEGIN { 24 if (!defined $Config{sig_name}) { 25 print "1..0 # skip No signals on this system?\n"; 26 exit; 27 } 28 if ($Config{sig_name} !~ m{\bUSR2\b}) { 29 print "1..0 # skip signal USR2 is not available on this system\n"; 30 exit; 31 } 32} 33 34use Tk; 35 36plan tests => 1; 37 38my $caught_USR2 = 0; 39$SIG{USR2} = sub { $caught_USR2++ }; 40 41my $mw = tkinit; 42$mw->geometry("+0+0"); 43$mw->Label(-text => "Waiting for USR2 signals...")->pack; 44$mw->idletasks; 45 46my $ppid = $$; 47if (fork == 0) { 48 kill USR2 => $ppid; 49 select undef,undef,undef,0.2; 50 kill USR2 => $ppid; 51 require POSIX; 52 POSIX::_exit(0); 53} 54 55$mw->after(500, sub { $mw->destroy }); 56 57MainLoop; 58 59is($caught_USR2, 2, "Caught USR2 signal exactly two times"); 60 61__END__ 62