Here is a way to timeout Open3 processes without using signals or OS-specific modules.
Tested with Perl 5.8.0 under Windows NT, Perl 5.8.5 under Cygwin, and Perl 5.8.4 under Linux.
use IPC::Open3;
use strict;
my $timeout = 5;
my ( $wtr, $rdr, $err );
my $test_program;
if ( $^O =~ /win32/i )
{
$test_program = q{" $|=1; for( 0 .. 10 ) { print \"$_\n\"; sle
+ep 1; } "};
}
else
{
$test_program = q{ $|=1; for( 0 .. 10 ) { print "$_\n"; sleep
+1; } };
}
my $pid = open3($wtr, $rdr, $err, 'perl', '-e', $test_program );
my $forked = fork();
die "fork() failed: $!" unless defined $forked;
if ( $forked == 0 )
{
sleep $timeout;
kill(9, $pid);
exit;
}
while ( <$rdr> )
{
print $_;
sleep 1;
}
print "finished\n";