1fa1235d32
* Callers of get() no longer have to contend with the annoying $casToken parameter, which is there but totally unusable to non-BagOStuff code. * The default get() now delegates to doGet(), which callers must implement instead. They can ignore the overhead of generating $casToken if they do not implement cas(), which applies to callers that use the stock merge(). If cas() is used for merge(), then getWithToken() must be implemented. * Also add BagOStuff::READ_LATEST to mergeViaCas() for sanity, as that missing before. Likewise with mergeViaLock(). Change-Id: I4efce6a9ab4b1eadd2f161dff641004a7239c516
74 lines
2.1 KiB
PHP
74 lines
2.1 KiB
PHP
<?php
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/**
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* Object caching using WinCache.
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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 WinCache 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 WinCacheBagOStuff extends BagOStuff {
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protected function doGet( $key, $flags = 0 ) {
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$casToken = null;
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return $this->getWithToken( $key, $casToken, $flags );
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}
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protected function getWithToken( $key, &$casToken, $flags = 0 ) {
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$val = wincache_ucache_get( $key );
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$casToken = $val;
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if ( is_string( $val ) ) {
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$val = unserialize( $val );
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}
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return $val;
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}
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public function set( $key, $value, $expire = 0 ) {
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$result = wincache_ucache_set( $key, serialize( $value ), $expire );
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/* wincache_ucache_set returns an empty array on success if $value
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was an array, bool otherwise */
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return ( is_array( $result ) && $result === array() ) || $result;
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}
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protected function cas( $casToken, $key, $value, $exptime = 0 ) {
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return wincache_ucache_cas( $key, $casToken, serialize( $value ) );
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}
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public function delete( $key ) {
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wincache_ucache_delete( $key );
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return true;
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}
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public function merge( $key, $callback, $exptime = 0, $attempts = 10 ) {
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if ( !is_callable( $callback ) ) {
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throw new Exception( "Got invalid callback." );
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}
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return $this->mergeViaCas( $key, $callback, $exptime, $attempts );
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}
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}
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