lib/Gruntmaster/Daemon/Runner/Interactive.pm

   1 package Gruntmaster::Daemon::Runner::Interactive;
   2
   3 use 5.014000;
   4 use strict;
   5 use warnings;
   6
   7 use File::Slurp qw/slurp/;
   8 use Gruntmaster::Daemon::Constants qw/WA/;
   9 use Log::Log4perl qw/get_logger/;
  10 use POSIX qw/mkfifo/;
  11 use Try::Tiny;
  12
  13 our $VERSION = '5999.000_004';
  14
  15 ##################################################
  16
  17 sub run{
  18         my ($test, $meta) = @_;
  19         get_logger->trace("Running on test $test...");
  20
  21         mkfifo 'fifo1', 0600 or die "$!\n" unless -e 'fifo1';
  22         mkfifo 'fifo2', 0600 or die "$!\n" unless -e 'fifo2';
  23
  24         my $ret = fork // get_logger->logdie("Fork failed: $!");
  25         if ($ret) {
  26                 try {
  27                         my @fds = $ENV{GRUNTMASTER_VM} ? qw,0 /dev/ttyS1 1 >/dev/ttyS1, : qw/0 fifo1 1 >fifo2/;
  28                         $meta->{files}{prog}{run}->($meta->{files}{prog}{name}, fds => \@fds, map { $_ => $meta->{$_} } qw/timeout mlimit/);
  29                 } catch {
  30                         die $_ ## no critic (RequireCarping)
  31                 } finally {
  32                         waitpid $ret, 0;
  33                 };
  34                 die [WA, 'Wrong Answer'] if $?; ## no critic (RequireCarping)
  35         } else {
  36                 try {
  37                         my @fds = $ENV{GRUNTMASTER_VM} ? qw,1 >/dev/ttyS1 0 /dev/ttyS1, : qw/1 >fifo1 0 fifo2/;
  38                         $meta->{files}{ver}{run}->($meta->{files}{ver}{name}, fds => [@fds, qw,4 >result,], args => [$test], map { $_ => $meta->{$_} } qw/timeout mlimit/);
  39                 } catch {
  40                         exit 1;
  41                 };
  42                 exit
  43         }
  44
  45         unlink 'fifo1';
  46         unlink 'fifo2';
  47
  48         scalar slurp 'result' or 'Ok'
  49 }
  50
  51 1;
  52 __END__
  53
  54 =encoding utf-8
  55
  56 =head1 NAME
  57
  58 Gruntmaster::Daemon::Runner::Interactive - Make an interactive verifier talk to the program
  59
  60 =head1 SYNOPSIS
  61
  62   use Gruntmaster::Daemon::Runner::Interactive;
  63   Gruntmaster::Daemon::Runner::Interactive::run(5, $meta);
  64
  65 =head1 DESCRIPTION
  66
  67 B<WARNING: This runner is experimental!>
  68
  69 Gruntmaster::Daemon::Runner::Interactive is a runner which runs the program and an interactive verifier in parallel, connecting each program's STDIN to the other's STDOUT. The verifier, C<< $meta->{files}{ver} >>, should return nonzero if the program gives an incorrect answer, or print the test score to fd 4 then return 0 if the answer is correct.
  70
  71 =head1 AUTHOR
  72
  73 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
  74
  75 =head1 COPYRIGHT AND LICENSE
  76
  77 Copyright (C) 2014 by Marius Gavrilescu
  78
  79 This library is free software: you can redistribute it and/or modify
  80 it under the terms of the GNU Affero General Public License as published by
  81 the Free Software Foundation, either version 3 of the License, or
  82 (at your option) any later version.
  83
  84
  85 =cut