Performance hacks to avoid killing the slaves;

[lhc/web/wiklou.git] / includes / CacheManager.php

diff --git a/includes/CacheManager.php b/includes/CacheManager.php
index 9f8abc1..0d116f7 100644 (file)
--- a/includes/CacheManager.php
+++ b/includes/CacheManager.php
@@ -14,37 +14,37 @@ require_once( 'Title.php' );
  * Handles talking to the file cache, putting stuff in and taking it back out.
  * Mostly called from Article.php, also from DatabaseFunctions.php for the
  * emergency abort/fallback to cache.
- * 
+ *
  * Global options that affect this module:
  * $wgCachePages
  * $wgCacheEpoch
  * $wgUseFileCache
  * $wgFileCacheDirectory
  * $wgUseGzip
- * @package MediaWiki 
+ * @package MediaWiki
  */
 class CacheManager {
        var $mTitle, $mFileCache;
-       
+
        function CacheManager( &$title ) {
                $this->mTitle =& $title;
                $this->mFileCache = '';
        }
-       
+
        function fileCacheName() {
                global $wgFileCacheDirectory;
                if( !$this->mFileCache ) {
                        $key = $this->mTitle->getPrefixedDbkey();
                        $hash = md5( $key );
                        $key = str_replace( '.', '%2E', urlencode( $key ) );
-                       
+
                        $hash1 = substr( $hash, 0, 1 );
                        $hash2 = substr( $hash, 0, 2 );
                        $this->mFileCache = "{$wgFileCacheDirectory}/{$hash1}/{$hash2}/{$key}.html";
-                       
+
                        if($this->useGzip())
                                $this->mFileCache .= '.gz';
-                       
+
                        wfDebug( " fileCacheName() - {$this->mFileCache}\n" );
                }
                return $this->mFileCache;
@@ -53,20 +53,20 @@ class CacheManager {
        function isFileCached() {
                return file_exists( $this->fileCacheName() );
        }
-       
+
        function fileCacheTime() {
                return wfTimestamp( TS_MW, filemtime( $this->fileCacheName() ) );
        }
-       
+
        function isFileCacheGood( $timestamp ) {
                global $wgCacheEpoch;
-               
+
                if( !$this->isFileCached() ) return false;
-               
+
                $cachetime = $this->fileCacheTime();
                $good = (( $timestamp <= $cachetime ) &&
                         ( $wgCacheEpoch <= $cachetime ));
-               
+
                wfDebug(" isFileCacheGood() - cachetime $cachetime, touched {$timestamp} epoch {$wgCacheEpoch}, good $good\n");
                return $good;
        }
@@ -75,12 +75,12 @@ class CacheManager {
                global $wgUseGzip;
                return $wgUseGzip;
        }
-       
+
        /* In handy string packages */
        function fetchRawText() {
                return file_get_contents( $this->fileCacheName() );
        }
-       
+
        function fetchPageText() {
                if( $this->useGzip() ) {
                        /* Why is there no gzfile_get_contents() or gzdecode()? */
@@ -89,18 +89,18 @@ class CacheManager {
                        return $this->fetchRawText();
                }
        }
-       
+
        /* Working directory to/from output */
        function loadFromFileCache() {
                global $wgOut, $wgMimeType, $wgOutputEncoding, $wgContLanguageCode;
                wfDebug(" loadFromFileCache()\n");
-               
+
                $filename=$this->fileCacheName();
                $wgOut->sendCacheControl();
 
                header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
                header( "Content-language: $wgContLanguageCode" );
-               
+
                if( $this->useGzip() ) {
                        if( wfClientAcceptsGzip() ) {
                                header( 'Content-Encoding: gzip' );
@@ -112,24 +112,24 @@ class CacheManager {
                }
                readfile( $filename );
        }
-       
+
        function checkCacheDirs() {
                $filename = $this->fileCacheName();
                $mydir2=substr($filename,0,strrpos($filename,'/')); # subdirectory level 2
                $mydir1=substr($mydir2,0,strrpos($mydir2,'/')); # subdirectory level 1
-               
+
                if(!file_exists($mydir1)) { mkdir($mydir1,0775); } # create if necessary
                if(!file_exists($mydir2)) { mkdir($mydir2,0775); }
        }
-       
+
        function saveToFileCache( $origtext ) {
                $text = $origtext;
                if(strcmp($text,'') == 0) return '';
-               
+
                wfDebug(" saveToFileCache()\n", false);
-               
+
                $this->checkCacheDirs();
-               
+
                $f = fopen( $this->fileCacheName(), 'w' );
                if($f) {
                        $now = wfTimestampNow();