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root |
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package Memoize::ExpireFile; |
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=head1 NAME |
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Memoize::ExpireFile - test for Memoize expiration semantics |
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=head1 DESCRIPTION |
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See L<Memoize::Expire>. |
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=cut |
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$VERSION = 1.01; |
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use Carp; |
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my $Zero = pack("N", 0); |
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sub TIEHASH { |
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my ($package, %args) = @_; |
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my $cache = $args{HASH} || {}; |
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bless {ARGS => \%args, C => $cache} => $package; |
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} |
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sub STORE { |
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# print "Expiry manager STORE handler\n"; |
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my ($self, $key, $data) = @_; |
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my $cache = $self->{C}; |
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my $cur_date = pack("N", (stat($key))[9]); |
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$cache->{"C$key"} = $data; |
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$cache->{"T$key"} = $cur_date; |
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} |
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sub FETCH { |
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my ($self, $key) = @_; |
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$self->{C}{"C$key"}; |
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} |
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sub EXISTS { |
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# print "Expiry manager EXISTS handler\n"; |
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my ($self, $key) = @_; |
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my $cache_date = $self->{C}{"T$key"} || $Zero; |
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my $file_date = pack("N", (stat($key))[9]);# |
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# if ($self->{ARGS}{CHECK_DATE} && $old_date gt $cur_date) { |
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# return $self->{ARGS}{CHECK_DATE}->($key, $old_date, $cur_date); |
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# } |
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my $res = $cache_date ge $file_date; |
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# print $res ? "... still good\n" : "... expired\n"; |
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$res; |
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} |
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1; |
