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Diff for /loncom/lonmaxima between versions 1.30 and 1.36

version 1.30, 2007/06/12 23:48:45 version 1.36, 2007/11/09 18:54:46
Line 44  use strict; Line 44  use strict;
 # global variables  # global variables
 my $PREFORK                = 5;        # number of children to maintain  my $PREFORK                = 5;        # number of children to maintain
 my $MAX_CLIENTS_PER_CHILD  = 50;       # number of clients each child should process  my $MAX_CLIENTS_PER_CHILD  = 50;       # number of clients each child should process
   my $extra_children         = 0;
 my %children               = ();       # keys are current child process IDs  my %children               = ();       # keys are current child process IDs
 my $children               = 0;        # current number of children  my $children               = 0;        # current number of children
 my $status;                            # string for current status  my $status;                            # string for current status
Line 60  sub REAPER {                        # ta Line 61  sub REAPER {                        # ta
                                     # and MAXIMA processes                                      # and MAXIMA processes
     $SIG{CHLD} = \&REAPER;      $SIG{CHLD} = \&REAPER;
     my $pid = wait;      my $pid = wait;
     $children--;      if (exists($children{$pid})) {
     delete($children{$pid});   $children--;
    delete($children{$pid});
    if ($extra_children) {
       $extra_children--;
    }
       }    
 }  }
     
 sub HUNTSMAN {                      # signal handler for SIGINT  sub HUNTSMAN {                      # signal handler for SIGINT
Line 126  sub catchexception { Line 132  sub catchexception {
 }  }
   
   
   sub child_announce_death {
       $SIG{USR1} = \&child_announce_death;
       if ($extra_children < $PREFORK*10) {
    $extra_children++;
       }
   }
   
 # ---------------------------------------------------------------- Main program  # ---------------------------------------------------------------- Main program
 # -------------------------------- Set signal handlers to record abnormal exits  # -------------------------------- Set signal handlers to record abnormal exits
Line 133  sub catchexception { Line 145  sub catchexception {
     
 $SIG{'QUIT'}=\&catchexception;  $SIG{'QUIT'}=\&catchexception;
 $SIG{__DIE__}=\&catchexception;  $SIG{__DIE__}=\&catchexception;
   $SIG{USR1} = \&child_announce_death;
     
 # ---------------------------------- Read loncapa_apache.conf and loncapa.conf  # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
 &status("Read loncapa.conf and loncapa_apache.conf");  &status("Read loncapa.conf and loncapa_apache.conf");
Line 212  for (1 .. $PREFORK) { Line 225  for (1 .. $PREFORK) {
 while (1) {  while (1) {
     &status('Parent process, sleeping');      &status('Parent process, sleeping');
     sleep;                          # wait for a signal (i.e., child's death)      sleep;                          # wait for a signal (i.e., child's death)
     for (my $i = $children; $i < $PREFORK; $i++) {      for (my $i = $children; $i < $PREFORK+$extra_children; $i++) {
         &status('Parent process, starting child');          &status('Parent process, starting child');
         &make_new_child($server);           # top up the child pool          &make_new_child($server);           # top up the child pool
     }      }
Line 238  sub make_new_child { Line 251  sub make_new_child {
     } else {      } else {
         # Child can *not* return from this subroutine.          # Child can *not* return from this subroutine.
                   
    my $ppid = getppid();
             
         # unblock signals          # unblock signals
         sigprocmask(SIG_UNBLOCK, $sigset)          sigprocmask(SIG_UNBLOCK, $sigset)
Line 256  sub make_new_child { Line 270  sub make_new_child {
   
  $command->log_stdout(0);   $command->log_stdout(0);
  #$command->log_file("$execdir/logs/lonmaxima.session.log");   #$command->log_file("$execdir/logs/lonmaxima.session.log");
         &getmaximaoutput($command);          &sync($command);
   
         for (my $i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {          for (my $i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {
             &status('Accepting connections');              &status('Accepting connections');
Line 274  sub make_new_child { Line 288  sub make_new_child {
                     last;                      last;
                 } elsif ($reply=~/^Error\:/) {                  } elsif ($reply=~/^Error\:/) {
                     &logthis('Died through '.$reply);                      &logthis('Died through '.$reply);
       kill('USR1' => $ppid);
                     $client->close();                      $client->close();
                     $command->hard_close();                           $command->hard_close();     
                     exit;                      exit;
Line 283  sub make_new_child { Line 298  sub make_new_child {
             }              }
         }          }
   
    kill('USR1' => $ppid);
    print $command ("quit();\n");
         # tidy up gracefully and finish          # tidy up gracefully and finish
    sleep(15);
         $command->soft_close();          $command->soft_close();
   
         # this exit is VERY important, otherwise the child will become          # this exit is VERY important, otherwise the child will become
Line 341  sub getmaximaoutput { Line 358  sub getmaximaoutput {
     }      }
     $output =~ s/\r+//g; # Remove Windows-style linebreaks      $output =~ s/\r+//g; # Remove Windows-style linebreaks
     my $foundoutput=0;      my $foundoutput=0;
       my $found_label=0;
     my $realoutput='';      my $realoutput='';
     foreach my $line (split(/\n/,$output)) {      foreach my $line (split(/\n/,$output)) {
        if ($line=~/\;/) { $foundoutput=1; next; }         if ($line=~/\;/) { $foundoutput=1; next; }
        if (!$foundoutput) { next; }         if (!$foundoutput) { next; }
        if ($line=~/^Incorrect syntax:/) { $syntaxerr = 1; next; }         if ($line=~/^Incorrect syntax:/) { $syntaxerr = 1; next; }
        (my $label, $line) = ($line=~ /^(\(\%o\d+\))(.+)$/);         if ($line=~ /^(\(\%o\d+\))(.+)$/){
        if ($label) {             my $label = $1;
            $label=~s/\S/ /g;             $line = $2;
              $label =~s/\S/ /g;
            $line=$label.$line;             $line=$label.$line;
      $found_label=1;
          }
          if ($found_label) {
      $realoutput.=$line."\n";
        }         }
        $realoutput.=$line."\n";  
     }      }
     if (wantarray) {      if (wantarray) {
         return ($realoutput,$syntaxerr);          return ($realoutput,$syntaxerr);
Removed from v.1.30  
changed lines
  Added in v.1.36

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