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1package Gruntmaster::Daemon::Format;
2
3use 5.014000;
4use strict;
5use warnings;
6use parent qw/Exporter/;
7no if $] > 5.017011, warnings => 'experimental::smartmatch';
8
9use POSIX qw//;
10use File::Basename qw/fileparse/;
11use Gruntmaster::Daemon::Constants qw/TLE OLE DIED NZX/;
12use Time::HiRes qw/alarm/;
13use List::MoreUtils qw/natatime/;
14use IPC::Signal qw/sig_name sig_num/;
15
16our $VERSION = '0.001';
17our @EXPORT_OK = qw/mkrun/;
18
19##################################################
20
21sub command_and_args{
22 my ($format, $basename) = @_;
23
24 given($format) {
25 "./$basename" when [qw/C CPP PASCAL/];
26 "./$basename.exe" when 'MONO';
27 "java $basename" when 'JAVA';
28 "perl $basename" when 'PERL';
29 "python $basename" when 'PYTHON';
30 default { die "Don't know how to execute format $format" }
31 }
32}
33
34sub mkrun{
35 my $format = shift;
36 sub{
37 my ($name, %args) = @_;
38 my $basename = fileparse $name, qr/\.[^.]*/;
39 my $ret = fork // die 'Cannot fork';
40 if ($ret) {
41 my $tle;
42 local $SIG{ALRM} = sub { kill KILL => $ret; $tle = 1};
43 alarm $args{timeout} if exists $args{timeout};
44 wait;
45 alarm 0;
46 my $sig = $? & 127;
47 my $signame = sig_name $sig;
48 die [TLE, "Time Limit Exceeded"] if $tle;
49 die [OLE, 'Output Limit Exceeded'] if $sig && $signame eq 'XFSZ';
50 die [DIED, "Crash (SIG$signame)"] if $sig;
51 die [NZX, "Non-zero exit status: " . ($? >> 8)] if $?;
52 } else {
53 my @fds = exists $args{fds} ? @{$args{fds}} : ();
54 $^F = 50;
55 POSIX::close $_ for 0 .. $^F;
56 my $it = natatime 2, @fds;
57 while (my ($fd, $file) = $it->()) {
58 open my $fh, $file or die $!;
59 my $oldfd = fileno $fh;
60 if ($oldfd != $fd) {
61 POSIX::dup2 $oldfd, $fd or die $!;
62 POSIX::close $oldfd or die $!;
63 }
64 }
65 exec 'gruntmaster-exec', $args{mlimit} // 0, $args{olimit} // 0, command_and_args($format, $basename), exists $args{args} ? @{$args{args}} : ();
66 exit 42
67 }
68 }
69}
70
711
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