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Diff for /loncom/lond between versions 1.328 and 1.329

version 1.328, 2006/05/18 02:32:06 version 1.329, 2006/05/18 17:55:49
Line 1063  sub _do_hash_untie { Line 1063  sub _do_hash_untie {
                }                 }
 # Apparently just no lock file yet. Make one  # Apparently just no lock file yet. Make one
                open($sym,">>$file_prefix.db.lock");                 open($sym,">>$file_prefix.db.lock");
            }              }
   # Do a shared lock
              if (!&flock_sym(LOCK_SH)) { return undef; } 
   # If this is compressed, we will actually need an exclusive lock
      if (-e "$file_prefix.db.gz") {
          if (!&flock_sym(LOCK_EX)) { return undef; }
      }
         } elsif ($how eq &GDBM_WRCREAT()) {          } elsif ($how eq &GDBM_WRCREAT()) {
 # We are writing  # We are writing
            open($sym,">>$file_prefix.db.lock");             open($sym,">>$file_prefix.db.lock");
 # Writing needs exclusive lock  # Writing needs exclusive lock
            $lock_type=LOCK_EX;             if (!&flock_sym(LOCK_EX)) { return undef; }
         } else {          } else {
            &logthis("Unknown method $how for $file_prefix");             &logthis("Unknown method $how for $file_prefix");
            die();             die();
         }          }
 # If this is compressed, we will also need an exclusive lock  
        if (-e "$file_prefix.db.gz") { $lock_type=LOCK_EX; }  
 # Okay, try to obtain the lock we want  
        my $failed=0;  
        eval {  
            local $SIG{__DIE__}='DEFAULT';  
            local $SIG{ALRM}=sub {  
                $failed=1;  
                die("failed lock");  
            };  
            alarm($lond_max_wait_time);  
            flock($sym,$lock_type);  
            alarm(0);  
        };  
        if ($failed) {  
            $! = 100; # throwing error # 100  
            return undef;  
        }  
 # The file is ours!  # The file is ours!
 # If it is archived, un-archive it now  # If it is archived, un-archive it now
        if (-e "$file_prefix.db.gz") {         if (-e "$file_prefix.db.gz") {
Line 1105  sub _do_hash_untie { Line 1093  sub _do_hash_untie {
        return &_do_hash_tie($file_prefix,$namespace,$how,$loghead,$what);         return &_do_hash_tie($file_prefix,$namespace,$how,$loghead,$what);
     }      }
   
       sub flock_sym {
           my ($lock_type)=@_;
    my $failed=0;
    eval {
       local $SIG{__DIE__}='DEFAULT';
       local $SIG{ALRM}=sub {
    $failed=1;
    die("failed lock");
       };
       alarm($lond_max_wait_time);
       flock($sym,$lock_type);
       alarm(0);
    };
    if ($failed) {
       $! = 100; # throwing error # 100
       return undef;
    } else {
       return 1;
    }
       }
   
     sub _locking_hash_untie {      sub _locking_hash_untie {
  my ($hashref) = @_;   my ($hashref) = @_;
  my $result = untie(%$hashref);   my $result = untie(%$hashref);
Removed from v.1.328  
changed lines
  Added in v.1.329

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