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Limit the Title backlink cache to two instances.

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Change-Id: I1e17a3de20d7c84a9818a850d4b7cc2898f72dc2
This commit is contained in:
Aaron Schulz 2012-09-03 12:45:50 -07:00
parent 2a7478b4fb
commit af89b09a06
2 changed files with 26 additions and 10 deletions
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28
includes/BacklinkCache.php
View file

@ -41,6 +41,8 @@
* @internal documentation reviewed on 18 Mar 2011 by hashar
*/
class BacklinkCache {
/** @var ProcessCacheLRU */
protected static $cache;
/**
* Multi dimensions array representing batches. Keys are:
@ -81,12 +83,30 @@ class BacklinkCache {
/**
* Create a new BacklinkCache
* @param Title $title : Title object to create a backlink cache for.
*
* @param Title $title : Title object to create a backlink cache for
*/
function __construct( $title ) {
public function __construct( Title $title ) {
$this->title = $title;
}
/**
* Create a new BacklinkCache or reuse any existing one
*
* @param Title $title : Title object to get a backlink cache for
* @return BacklinkCache
*/
public static function get( Title $title ) {
if ( !self::$cache ) { // init cache
self::$cache = new ProcessCacheLRU( 2 );
}
$dbKey = $title->getPrefixedDBkey();
if ( !self::$cache->has( $dbKey, 'obj' ) ) {
self::$cache->set( $dbKey, 'obj', new self( $title ) );
}
return self::$cache->get( $dbKey, 'obj' );
}
/**
* Serialization handler, diasallows to serialize the database to prevent
* failures after this class is deserialized from cache with dead DB
@ -303,7 +323,7 @@ class BacklinkCache {
*/
public function partition( $table, $batchSize ) {
// 1) try partition cache ...
// 1) try partition cache ...
if ( isset( $this->partitionCache[$table][$batchSize] ) ) {
wfDebug( __METHOD__ . ": got from partition cache\n" );
@ -358,7 +378,7 @@ class BacklinkCache {
* Partition a DB result with backlinks in it into batches
* @param $res ResultWrapper database result
* @param $batchSize integer
* @return array @see
* @return array @see
*/
protected function partitionResult( $res, $batchSize ) {
$batches = array();

8
includes/Title.php
View file

@ -84,7 +84,6 @@ class Title {
var $mLength = -1; // /< The page length, 0 for special pages
var $mRedirect = null; // /< Is the article at this title a redirect?
var $mNotificationTimestamp = array(); // /< Associative array of user ID -> timestamp/false
var $mBacklinkCache = null; // /< Cache of links to this title
var $mHasSubpage; // /< Whether a page has any subpages
// @}
@ -4477,11 +4476,8 @@ class Title {
*
* @return BacklinkCache
*/
function getBacklinkCache() {
if ( is_null( $this->mBacklinkCache ) ) {
$this->mBacklinkCache = new BacklinkCache( $this );
}
return $this->mBacklinkCache;
public function getBacklinkCache() {
return BacklinkCache::get( $this );
}
/**