#!/usr/bin/perl
-# Copyright (c) 2014 IndexData ApS. http://indexdata.com
+# Copyright (c) 2014 Index Data ApS. http://indexdata.com
#
# bomb.pl - wrapper to stop a process after N seconds
#
use Getopt::Long;
+use POSIX ":sys_wait_h";
use strict;
use warnings;
my $debug = 0;
my $help;
my $timeout = 100;
+my $pid;
binmode \*STDOUT, ":utf8";
binmode \*STDERR, ":utf8";
-# timeout handler
-sub set_alarm {
- my $time = shift;
- my $message = shift || "";
-
- $time = 100 if !defined $time;
-
- $SIG{ALRM} = sub {
-
- warn "Time out alarm $time\n";
-
- # sends a hang-up signal to all processes in the current process group
- # and kill running java processes
- local $SIG{HUP} = "IGNORE";
- kill 1, -$$;
-
- local $SIG{TERM} = "IGNORE";
- kill 15, -$$;
- kill 15, -$$;
-
- warn "Send a hang-up to all childs.\n";
-
- #exit 1;
- };
-
- warn "set alarm time to: $time seconds $message\n" if $debug >= 1;
- alarm($time);
-}
-
sub usage () {
<<EOF;
usage: $0 [ options ] command args ....
die usage if $help;
die usage if !@system;
-set_alarm( $timeout, join( " ", @system ) );
+# set CPU limit, in case the alarm handler will
+# be ignored
+eval {
+ require BSD::Resource;
+ BSD::Resource::setrlimit("RLIMIT_CPU", $timeout, 2*$timeout) or die "Cannot set CPU limit: $!\n";
+};
+if ($@) {
+ warn "WARNING: things would go more nicely with the BSD::Resource package\n";
+}
+
+
+#
+# use fork/exec instead system()
+#
+$pid = fork();
+die "fork() failed: $!" unless defined $pid;
+
+# child
+if ($pid) {
+ alarm($timeout);
+ exec(@system) or die "exec @system: $!\n";
+}
-system(@system) == 0
- or die "@system failed with exit code: $?\n";
+# parent
+else { }
-exit(0);
+1;