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Diff for /loncom/lonmaxima between versions 1.2 and 1.4

version 1.2, 2006/03/03 22:35:09 version 1.4, 2006/03/03 23:31:06
Line 30 Line 30
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
 # global variables  
 $PREFORK                = 5;        # number of children to maintain  
 $MAX_CLIENTS_PER_CHILD  = 5;        # number of clients each child should process  
 %children               = ();       # keys are current child process IDs  
 $children               = 0;        # current number of children  
     
 use IPC::Open3;  use IPC::Open3;
 use IO::Select;  use IO::Select;
Line 45  use POSIX; Line 40  use POSIX;
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA::Configuration;  use LONCAPA::Configuration;
     
 # Scary: cannot use strict!!!  use strict;
 ##### use strict;  
   # global variables
   my $PREFORK                = 5;        # number of children to maintain
   my $MAX_CLIENTS_PER_CHILD  = 5;        # number of clients each child should process
   my %children               = ();       # keys are current child process IDs
   my $children               = 0;        # current number of children
   my $status;                            # string for current status
   
   use vars qw($PREFORK $MAX_CLIENTS_PER_CHILD %children $children $status
       $cmd_in $cmd_out $cmd_err $pidfile $port %perlvar $lastlog
       $currenthostid $client $server $cmd
       );
     
 sub maximareply {  sub maximareply {
     my $cmd=shift;      my ($cmd) = @_;
     my $reply='';      my $reply='';
     my $error='';      my $error='';
     my $exitstatus='';      my $exitstatus='';
Line 109  sub HUNTSMAN {                      # si Line 115  sub HUNTSMAN {                      # si
 # --------------------------------------------------------------------- Logging  # --------------------------------------------------------------------- Logging
     
 sub logthis {  sub logthis {
     my $message=shift;      my ($message)=@_;
     my $execdir=$perlvar{'lonDaemons'};      my $execdir=$perlvar{'lonDaemons'};
     my $fh=IO::File->new(">>$execdir/logs/lonmaxima.log");      my $fh=IO::File->new(">>$execdir/logs/lonmaxima.log");
     my $now=time;      my $now=time;
Line 121  sub logthis { Line 127  sub logthis {
 # -------------------------------------------------------------- Status setting  # -------------------------------------------------------------- Status setting
     
 sub status {  sub status {
     my $what=shift;      my ($what)=@_;
     my $now=time;      my $now=time;
     my $local=localtime($now);      my $local=localtime($now);
     $status=$local.': '.$what;      $status=$local.': '.$what;
Line 131  sub status { Line 137  sub status {
 # -------------------------------------------------------- Escape Special Chars  # -------------------------------------------------------- Escape Special Chars
     
 sub escape {  sub escape {
     my $str=shift;      my ($str)=@_;
     $str =~ s/(\W)/"%".unpack('H2',$1)/eg;      $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
     return $str;      return $str;
 }  }
Line 139  sub escape { Line 145  sub escape {
 # ----------------------------------------------------- Un-Escape Special Chars  # ----------------------------------------------------- Un-Escape Special Chars
     
 sub unescape {  sub unescape {
     my $str=shift;      my ($str)=@_;
     $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;      $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
     return $str;      return $str;
 }  }
Line 167  $SIG{__DIE__}=\&catchexception; Line 173  $SIG{__DIE__}=\&catchexception;
     
 # ---------------------------------- 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");
 my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');  %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
 %perlvar=%{$perlvarref};  
 undef $perlvarref;  
     
 # ----------------------------- Make sure this process is running from user=www  # ----------------------------- Make sure this process is running from user=www
 my $wwwid=getpwnam('www');  my $wwwid=getpwnam('www');
Line 236  close(PIDSAVE); Line 240  close(PIDSAVE);
             
 # Fork off our children.  # Fork off our children.
 for (1 .. $PREFORK) {  for (1 .. $PREFORK) {
     make_new_child( );      &make_new_child();
 }  }
     
 # Install signal handlers.  # Install signal handlers.
Line 247  $SIG{INT}  = $SIG{TERM} = \&HUNTSMAN; Line 251  $SIG{INT}  = $SIG{TERM} = \&HUNTSMAN;
 while (1) {  while (1) {
     &status('Parent process, sleeping');      &status('Parent process, sleeping');
     sleep;                          # wait for a signal (i.e., child's death)      sleep;                          # wait for a signal (i.e., child's death)
     for ($i = $children; $i < $PREFORK; $i++) {      for (my $i = $children; $i < $PREFORK; $i++) {
         &status('Parent process, starting child');          &status('Parent process, starting child');
         make_new_child( );           # top up the child pool          &make_new_child();           # top up the child pool
     }      }
 }  }
                                                                                                                                                                   
 sub make_new_child {  sub make_new_child {
     my $pid;  
     my $sigset;  
        
     # block signal for fork      # block signal for fork
     $sigset = POSIX::SigSet->new(SIGINT);      my $sigset = POSIX::SigSet->new(SIGINT);
     sigprocmask(SIG_BLOCK, $sigset)      sigprocmask(SIG_BLOCK, $sigset)
         or die "Can't block SIGINT for fork: $!\n";          or die "Can't block SIGINT for fork: $!\n";
             
     die "fork: $!" unless defined ($pid = fork);      die "fork: $!" unless defined (my $pid = fork);
             
     if ($pid) {      if ($pid) {
         # Parent records the child's birth and returns.          # Parent records the child's birth and returns.
Line 278  sub make_new_child { Line 280  sub make_new_child {
         # unblock signals          # unblock signals
         sigprocmask(SIG_UNBLOCK, $sigset)          sigprocmask(SIG_UNBLOCK, $sigset)
             or die "Can't unblock SIGINT for fork: $!\n";              or die "Can't unblock SIGINT for fork: $!\n";
            
         # handle connections until we've reached $MAX_CLIENTS_PER_CHILD   &process_requests();
         for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {  
     &status('Accepting connections');       
             $client = $server->accept( )     or last;  
             while ($cmd=<$client>) {  
  &status('Processing command');  
  print $client &escape((&maximareply(&unescape($cmd)))[0])."\n";  
     }  
         }  
        
         # tidy up gracefully and finish          # tidy up gracefully and finish
   
         # this exit is VERY important, otherwise the child will become          # this exit is VERY important, otherwise the child will become
Line 297  sub make_new_child { Line 291  sub make_new_child {
         exit;          exit;
     }      }
 }  }
   
   sub process_requests {
       # handle connections until we've reached $MAX_CLIENTS_PER_CHILD
       for (my $i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {
    &status('Accepting connections');     
    $client = $server->accept( )     or last;
    while ($cmd=<$client>) {
       &status('Processing command');
       print $client &escape((&maximareply(&unescape($cmd)))[0])."\n";
    }
       }    
   }
Removed from v.1.2  
changed lines
  Added in v.1.4

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