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 $VERSION = '5999.000_002';
  14
  15 ##################################################
  16
  17 sub run{
  18         my ($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                 $meta->{files}{prog}{run}->($meta->{files}{prog}{name}, fds => [qw/0 fifo1 1 >fifo2/], map {defined $meta->{$_} ? ($_ => $meta->{$_}) : () } qw/timeout mlimit/);
  27                 waitpid $ret, 0;
  28                 die [WA, "Wrong Answer"] if $?;
  29         } else {
  30                 try {
  31                         $meta->{files}{ver}{run}->($meta->{files}{ver}{name}, fds => [qw/1 >fifo1 0 fifo2 4 >result/], args => [$test], map {defined $meta->{$_} ? ($_ => $meta->{$_}) : () } qw/timeout mlimit/);
  32                 } catch {
  33                         exit 1;
  34                 };
  35                 exit
  36         }
  37
  38         unlink 'fifo1';
  39         unlink 'fifo2';
  40
  41         scalar slurp 'result'
  42 }
  43
  44 1;
  45 __END__
  46
  47 =encoding utf-8
  48
  49 =head1 NAME
  50
  51 Gruntmaster::Daemon::Runner::Interactive - Make an interactive verifier talk to the program
  52
  53 =head1 SYNOPSIS
  54
  55   use Gruntmaster::Daemon::Runner::Interactive;
  56   Gruntmaster::Daemon::Runner::Interactive->run(5, $meta);
  57
  58 =head1 DESCRIPTION
  59
  60 B<WARNING: This runner is experimental!>
  61
  62 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}{int} >>, should return nonzero if the program gives an incorrect answer, and print the test score to fd 4 then return 0 if the answer is correct.
  63
  64 =head1 AUTHOR
  65
  66 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
  67
  68 =head1 COPYRIGHT AND LICENSE
  69
  70 Copyright (C) 2014 by Marius Gavrilescu
  71
  72 This library is free software: you can redistribute it and/or modify
  73 it under the terms of the GNU Affero General Public License as published by
  74 the Free Software Foundation, either version 3 of the License, or
  75 (at your option) any later version.
  76
  77
  78 =cut