diff options
Diffstat (limited to 'modules/system/system.module')
-rw-r--r-- | modules/system/system.module | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/modules/system/system.module b/modules/system/system.module index 39de758ed..362bdd445 100644 --- a/modules/system/system.module +++ b/modules/system/system.module @@ -3056,8 +3056,20 @@ function system_cron() { } } - $core = array('cache', 'cache_path', 'cache_filter', 'cache_page', 'cache_form', 'cache_menu'); - $cache_tables = array_merge(module_invoke_all('flush_caches'), $core); + // Delete expired cache entries. + // Avoid invoking hook_flush_cashes() on every cron run because some modules + // use this hook to perform expensive rebuilding operations (which are only + // designed to happen on full cache clears), rather than just returning a + // list of cache tables to be cleared. + $cache_object = cache_get('system_cache_tables'); + if (empty($cache_object)) { + $core = array('cache', 'cache_path', 'cache_filter', 'cache_page', 'cache_form', 'cache_menu'); + $cache_tables = array_merge(module_invoke_all('flush_caches'), $core); + cache_set('system_cache_tables', $cache_tables); + } + else { + $cache_tables = $cache_object->data; + } foreach ($cache_tables as $table) { cache_clear_all(NULL, $table); } |