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######################################################################
# $Id: SizeAwareSharedMemoryCache.pm,v 1.22 2002/04/07 17:04:46 dclinton Exp $
# Copyright (C) 2001-2003 DeWitt Clinton All Rights Reserved
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed or
# implied. See the License for the specific language governing
# rights and limitations under the License.
######################################################################
package Cache::SizeAwareSharedMemoryCache;
use strict;
use vars qw( @ISA @EXPORT_OK $NO_MAX_SIZE );
use Cache::Cache qw( $EXPIRES_NEVER );
use Cache::SharedMemoryBackend;
use Cache::SizeAwareMemoryCache;
use Cache::SharedMemoryCache;
use Exporter;
@ISA = qw ( Cache::SizeAwareMemoryCache Exporter );
@EXPORT_OK = qw( $NO_MAX_SIZE );
$NO_MAX_SIZE = $Cache::SizeAwareMemoryCache::NO_MAX_SIZE;
sub Clear
{
return Cache::SharedMemoryCache::Clear( );
}
sub Purge
{
return Cache::SharedMemoryCache::Purge( );
}
sub Size
{
return Cache::SharedMemoryCache::Size( );
}
sub new
{
my ( $self ) = _new( @_ );
$self->_complete_initialization( );
return $self;
}
sub _new
{
my ( $proto, $p_options_hash_ref ) = @_;
my $class = ref( $proto ) || $proto;
my $self = $class->SUPER::_new( $p_options_hash_ref );
$self->_set_backend( new Cache::SharedMemoryBackend( ) );
return $self;
}
1;
__END__
=pod
=head1 NAME
Cache::SizeAwareSharedMemoryCache -- extends Cache::SizeAwareMemoryCache
=head1 DESCRIPTION
The SizeAwareSharedMemoryCache class adds the ability to dynamically
limit the size (in bytes) of a shared memory based cache. This class
also implements the SizeAwareCache interface, providing the 'max_size'
option and the 'limit_size( $size )' method.
=head1 SYNOPSIS
use Cache::SizeAwareSharedMemoryCache;
my $cache =
new Cache::SizeAwareSharedMemoryCache( { 'namespace' => 'MyNamespace',
'default_expires_in' => 600,
'max_size' => 10000 } );
=head1 METHODS
See Cache::Cache and Cache::SizeAwareCache for the API documentation.
=head1 OPTIONS
See Cache::Cache and Cache::SizeAwareCache for the standard options.
=head1 PROPERTIES
See Cache::Cache and Cache::SizeAwareCache for the default properties.
=head1 SEE ALSO
Cache::Cache, Cache::SizeAwareCache, Cache::SharedMemoryCache
=head1 AUTHOR
Original author: DeWitt Clinton <dewitt@unto.net>
Last author: $Author: dclinton $
Copyright (C) 2001-2003 DeWitt Clinton
=cut
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