lib/Gruntmaster/Daemon/Format.pm

   1 package Gruntmaster::Daemon::Format;
   2
   3 use 5.014000;
   4 use strict;
   5 use warnings;
   6 use parent qw/Exporter/;
   7 no if $] > 5.017011, warnings => 'experimental::smartmatch';
   8
   9 use POSIX qw//;
  10 use File::Basename qw/fileparse/;
  11 use Gruntmaster::Daemon::Constants qw/TLE OLE DIED NZX/;
  12 use Log::Log4perl qw/get_logger/;
  13 use Time::HiRes qw/alarm/;
  14 use List::MoreUtils qw/natatime/;
  15 use IPC::Signal qw/sig_name sig_num/;
  16 use IPC::Open3 qw/open3/;
  17 use File::Spec::Functions qw/devnull/;
  18 use Fcntl qw/F_GETFD F_SETFD FD_CLOEXEC/;
  19
  20 our $VERSION = '0.001';
  21 our @EXPORT_OK = qw/mkrun/;
  22
  23 ##################################################
  24
  25 sub command_and_args{
  26         my ($format, $basename) = @_;
  27
  28         given($format) {
  29                 "./$basename" when [qw/C CPP PASCAL/];
  30                 "./$basename.exe" when 'MONO';
  31                 "java $basename" when 'JAVA';
  32                 "perl $basename" when 'PERL';
  33                 "python $basename" when 'PYTHON';
  34                 default { die "Don't know how to execute format $format" }
  35         }
  36 }
  37
  38 sub mkrun{
  39         my $format = shift;
  40         sub{
  41                 my ($name, %args) = @_;
  42                 my $basename = fileparse $name, qr/\.[^.]*/;
  43                 my $ret = fork // die 'Cannot fork';
  44                 if ($ret) {
  45                         my $tle;
  46                         local $SIG{ALRM} = sub { kill KILL => $ret; $tle = 1};
  47                         alarm $args{timeout} if exists $args{timeout};
  48                         wait;
  49                         alarm 0;
  50                         my $sig = $? & 127;
  51                         my $signame = sig_name $sig;
  52                         die [TLE, "Time Limit Exceeded"] if $tle;
  53                         die [OLE, 'Output Limit Exceeded'] if $sig && $signame eq 'XFSZ';
  54                         die [DIED, "Crash (SIG$signame)"] if $sig;
  55                         die [NZX, "Non-zero exit status: " . ($? >> 8)] if $?;
  56                 } else {
  57                         my @fds = exists $args{fds} ? @{$args{fds}} : ();
  58                         $^F = 50;
  59                         POSIX::close $_ for 0 .. $^F;
  60                         my $it = natatime 2, @fds;
  61                         while (my ($fd, $file) = $it->()) {
  62                                 open my $fh, $file or die $!;
  63                                 my $oldfd = fileno $fh;
  64                                 if ($oldfd != $fd) {
  65                                         POSIX::dup2 $oldfd, $fd or die $!;
  66                                         POSIX::close $oldfd or die $!;
  67                                 }
  68                         }
  69                         exec 'gruntmaster-exec', $args{mlimit} // 0, $args{olimit} // 0, command_and_args($format, $basename), exists $args{args} ? @{$args{args}} : ();
  70                         exit 42
  71                 }
  72         }
  73 }
  74
  75 1