From 336c3bd264b4af2ab74fe1262366ad6f2e705451 Mon Sep 17 00:00:00 2001 From: Andy Staudacher Date: Sun, 21 Feb 2010 21:29:24 -0800 Subject: Fix Kohana's internal cache for Gallery's usage pattern. Instead of deleting the whole find_files cache when ever include_paths (=core.modules) change, keep a separate find_files cache for each set of include_paths. Benefits for Gallery: - There are about 3000 is_file() invocations for a photo / album page in a vanilla Gallery installation. These are mostly triggered by Kohana::find_file(). - Enabling internal_cache doesn't help at all (see explanation below). The number of is_file() invocations is about the same with or without this cache. - With this patch, more than 95% of these invocations are gone. The cache works as intended. Kohana's internal_cache for find_file wasn't working in Gallery because the cache would be emptied on each request after reading it from disk and before most lookups would run. 1. Bootstrap sets initial core.modules (= include path): forge, kohana23_compat, gallery. 2. Kohana::setup() loads find_file cache from disk. 3. Gallery loads list of active modules and themes, and updates the core.modules value (=include path), which forces the internal find_file cache to be empties (which makes sense). 4. Request processing starts, and thus 80+% of all Kohana::find_file() triggered is_file() invocations start off with an empty find_file cache. The patch doesn't have a significant impact on performance for Kohana applications which don't change their include paths at runtime (after Kohana::setup). And the patch should benefit all Kohana applications which have modules / extensions, i.e. which first need to bootstrap Kohana before they can load a list of all active modules from the database. --- system/core/Kohana.php | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) (limited to 'system/core') diff --git a/system/core/Kohana.php b/system/core/Kohana.php index ae056d0e..f7f6b326 100644 --- a/system/core/Kohana.php +++ b/system/core/Kohana.php @@ -32,6 +32,7 @@ abstract class Kohana_Core { // Include paths protected static $include_paths; + protected static $include_paths_hash = ''; // Cache lifetime protected static $cache_lifetime; @@ -365,14 +366,7 @@ abstract class Kohana_Core { // Add SYSPATH as the last path Kohana::$include_paths[] = SYSPATH; - // Clear cached include paths - self::$internal_cache['find_file_paths'] = array(); - if ( ! isset(self::$write_cache['find_file_paths'])) - { - // Write cache at shutdown - self::$write_cache['find_file_paths'] = TRUE; - } - + Kohana::$include_paths_hash = md5(serialize(Kohana::$include_paths)); } return Kohana::$include_paths; @@ -766,8 +760,8 @@ abstract class Kohana_Core { // Search path $search = $directory.'/'.$filename.$ext; - if (isset(Kohana::$internal_cache['find_file_paths'][$search])) - return Kohana::$internal_cache['find_file_paths'][$search]; + if (isset(Kohana::$internal_cache['find_file_paths'][Kohana::$include_paths_hash][$search])) + return Kohana::$internal_cache['find_file_paths'][Kohana::$include_paths_hash][$search]; // Load include paths $paths = Kohana::$include_paths; @@ -824,7 +818,7 @@ abstract class Kohana_Core { Kohana::$write_cache['find_file_paths'] = TRUE; } - return Kohana::$internal_cache['find_file_paths'][$search] = $found; + return Kohana::$internal_cache['find_file_paths'][Kohana::$include_paths_hash][$search] = $found; } /** -- cgit v1.2.3