2 package Memoize::ExpireFile;
6 my ($package, %args) = @_;
9 my ($module, @opts) = @{$args{TIE}};
10 my $modulefile = $module . '.pm';
11 $modulefile =~ s{::}{/}g;
12 eval { require $modulefile };
14 croak "Memoize::ExpireFile: Couldn't load hash tie module `$module': $@; aborting";
16 my $rc = (tie %cache => $module, @opts);
18 croak "Memoize::ExpireFile: Couldn't tie hash to `$module': $@; aborting";
21 bless {ARGS => \%args, C => \%cache} => $package;
26 my ($self, $key, $data) = @_;
27 my $cache = $self->{C};
28 my $cur_date = pack("N", (stat($key))[9]);
29 $cache->{"C$key"} = $data;
30 $cache->{"T$key"} = $cur_date;
34 my ($self, $key) = @_;
39 my ($self, $key) = @_;
40 my $old_date = $self->{C}{"T$key"} || "0";
41 my $cur_date = pack("N", (stat($key))[9]);
42 if ($self->{ARGS}{CHECK_DATE} && $old_date gt $cur_date) {
43 return $self->{ARGS}{CHECK_DATE}->($key, $old_date, $cur_date);
45 return $old_date ge $cur_date;