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 $VERSION = '5999.000_003';
  14
  15 ##################################################
  16
  17 sub run{
  18         my ($test, $meta) = @_;
  19         get_logger->trace("Running on test $test...");
  20
  21         mkfifo 'fifo1', 0600 or die $! unless -e 'fifo1';
  22         mkfifo 'fifo2', 0600 or die $! unless -e 'fifo2';
  23
  24         my $ret = fork // get_logger->logdie("Fork failed: $!");
  25         if ($ret) {
  26                 try {
  27                         $meta->{files}{prog}{run}->($meta->{files}{prog}{name}, fds => [qw/0 fifo1 1 >fifo2/], map {defined $meta->{$_} ? ($_ => $meta->{$_}) : () } qw/timeout mlimit/);
  28                 } catch {
  29                         die $_
  30                 } finally {
  31                         waitpid $ret, 0;
  32                 };
  33                 die [WA, "Wrong Answer"] if $?;
  34         } else {
  35                 try {
  36                         $meta->{files}{ver}{run}->($meta->{files}{ver}{name}, fds => [qw/1 >fifo1 0 fifo2 4 >result/], args => [$test], map {defined $meta->{$_} ? ($_ => $meta->{$_}) : () } qw/timeout mlimit/);
  37                 } catch {
  38                         exit 1;
  39                 };
  40                 exit
  41         }
  42
  43         unlink 'fifo1';
  44         unlink 'fifo2';
  45
  46         scalar slurp 'result'
  47 }
  48
  49 1;
  50 __END__
  51
  52 =encoding utf-8
  53
  54 =head1 NAME
  55
  56 Gruntmaster::Daemon::Runner::Interactive - Make an interactive verifier talk to the program
  57
  58 =head1 SYNOPSIS
  59
  60   use Gruntmaster::Daemon::Runner::Interactive;
  61   Gruntmaster::Daemon::Runner::Interactive::run(5, $meta);
  62
  63 =head1 DESCRIPTION
  64
  65 B<WARNING: This runner is experimental!>
  66
  67 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.
  68
  69 =head1 AUTHOR
  70
  71 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
  72
  73 =head1 COPYRIGHT AND LICENSE
  74
  75 Copyright (C) 2014 by Marius Gavrilescu
  76
  77 This library is free software: you can redistribute it and/or modify
  78 it under the terms of the GNU Affero General Public License as published by
  79 the Free Software Foundation, either version 3 of the License, or
  80 (at your option) any later version.
  81
  82
  83 =cut