$current+1,
                                     scalar @toremove,
                                     $toremove,
                                    )
                            );
    return if $CPAN::Signal;
    $self->_clean_cache($toremove);
    return if $CPAN::Signal;
  }
}

#-> sub CPAN::CacheMgr::dir ;
sub dir {
    shift->{ID};
}

#-> sub CPAN::CacheMgr::entries ;
sub entries {
    my($self,$dir) = @_;
    return unless defined $dir;
    $self->debug("reading dir[$dir]") if $CPAN::DEBUG;
    $dir ||= $self->{ID};
    my($cwd) = CPAN::anycwd();
    chdir $dir or Carp::croak("Can't chdir to $dir: $!");
    my $dh = DirHandle->new(File::Spec->curdir)
        or Carp::croak("Couldn't opendir $dir: $!");
    my(@entries);
    for ($dh->read) {
        next if $_ eq "." || $_ eq "..";
        if (-f $_) {
            push @entries, File::Spec->catfile($dir,$_);
        } elsif (-d _) {
            push @entries, File::Spec->catdir($dir,$_);
        } else {
            $CPAN::Frontend->mywarn("Warning: weird direntry in $dir: $_\n");
        }
    }
    chdir $cwd or Carp::croak("Can't chdir to $cwd: $!");
    sort { -M $a <=> -M $b} @entries;
}

#-> sub CPAN::CacheMgr::disk_usage ;
sub disk_usage {
    my($self,$dir,$fast) = @_;
    return if exists $self->{SIZE}{$dir};
    return if $CPAN::Signal;
    my($Du) = 0;
    if (-e $dir) {
        if (-d $dir) {
            unless (-x $dir) {
                unless (chmod 0755, $dir) {
                    $CPAN::Frontend->mywarn("I have neither the -x permission nor the ".
                                            "permission to change the permission; cannot ".
                                            "estimate disk usage of '$dir'\n");
                    $CPAN::Frontend->mysleep(5);
                    return;
                }
            }
        } elsif (-f $dir) {
            # nothing to say, no matter what the permissions
        }
    } else {
        $CPAN::Frontend->mywarn("File or directory '$dir' has gone, ignoring\n");
        return;
    }
    if ($fast) {
        $Du = 0; # placeholder
    } else {
        find(
             sub {
           $File::Find::prune++ if $CPAN::Signal;
           return if -l $_;
           if ($^O eq 'MacOS') {
             require Mac::Files;
             my $cat  = Mac::Files::FSpGetCatInfo($_);
             $Du += $cat->ioFlLgLen() + $cat->ioFlRLgLen() if $cat;
           } else {
             if (-d _) {
               unless (-x _) {
                 unless (chmod 0755, $_) {
                   $CPAN::Frontend->mywarn("I have neither the -x permission nor ".
                                           "the permission to change the permission; ".
                                           "can only partially estimate disk usage ".
                                           "of '$_'\n");
                   $CPAN::Frontend->mysleep(5);
                   return;
                 }
               }
             } else {
               $Du += (-s _);
             }
           }
         },
         $dir
            );
    }
    return if $CPAN::Signal;
    $self->{SIZE}{$dir} = $Du/1024/1024;
    unshift @{$self->{FIFO}}, $dir;
    $self->debug("measured $dir is $Du") if $CPAN::DEBUG;