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117 lines
3.1 KiB
PHP
117 lines
3.1 KiB
PHP
<?php
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/**
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* Object caching using XCache.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Cache
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*/
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/**
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* Wrapper for XCache object caching functions; identical interface
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* to the APC wrapper
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*
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* @ingroup Cache
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*/
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class XCacheBagOStuff extends BagOStuff {
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/**
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* Get a value from the XCache object cache
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*
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* @param string $key cache key
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* @param $casToken mixed: cas token
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* @return mixed
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*/
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public function get( $key, &$casToken = null ) {
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$val = xcache_get( $key );
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if ( is_string( $val ) ) {
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if ( $this->isInteger( $val ) ) {
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$val = intval( $val );
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} else {
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$val = unserialize( $val );
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}
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} elseif ( is_null( $val ) ) {
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return false;
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}
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return $val;
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}
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/**
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* Store a value in the XCache object cache
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*
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* @param string $key cache key
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* @param $value Mixed: object to store
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* @param int $expire expiration time
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* @return bool
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*/
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public function set( $key, $value, $expire = 0 ) {
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if ( !$this->isInteger( $value ) ) {
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$value = serialize( $value );
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}
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xcache_set( $key, $value, $expire );
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return true;
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}
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/**
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* @param $casToken mixed
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* @param $key string
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* @param $value mixed
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* @param $exptime int
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* @return bool
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*/
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public function cas( $casToken, $key, $value, $exptime = 0 ) {
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// Can't find any documentation on xcache cas
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throw new MWException( "CAS is not implemented in " . __CLASS__ );
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}
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/**
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* Remove a value from the XCache object cache
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*
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* @param string $key cache key
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* @param int $time not used in this implementation
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* @return bool
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*/
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public function delete( $key, $time = 0 ) {
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xcache_unset( $key );
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return true;
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}
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/**
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* Merge an item.
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* XCache does not seem to support any way of performing CAS - this however will
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* provide a way to perform CAS-like functionality.
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*
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* @param $key string
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* @param $callback closure Callback method to be executed
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* @param int $exptime Either an interval in seconds or a unix timestamp for expiry
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* @param int $attempts The amount of times to attempt a merge in case of failure
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* @return bool success
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*/
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public function merge( $key, closure $callback, $exptime = 0, $attempts = 10 ) {
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return $this->mergeViaLock( $key, $callback, $exptime, $attempts );
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}
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public function incr( $key, $value = 1 ) {
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return xcache_inc( $key, $value );
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}
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public function decr( $key, $value = 1 ) {
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return xcache_dec( $key, $value );
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}
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}
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