_registry_update
function _registry_update
_registry_update()
Does the work for registry_update().
Related topics
File
- includes/registry.inc, line 21
- This file contains the code registry parser engine.
Code
function _registry_update() { // The registry serves as a central autoloader for all classes, including // the database query builders. However, the registry rebuild process // requires write ability to the database, which means having access to the // query builders that require the registry in order to be loaded. That // causes a fatal race condition. Therefore we manually include the // appropriate query builders for the currently active database before the // registry rebuild process runs. $connection_info = Database::getConnectionInfo(); $driver = $connection_info['default']['driver']; require_once DRUPAL_ROOT . '/includes/database/query.inc'; require_once DRUPAL_ROOT . '/includes/database/select.inc'; require_once DRUPAL_ROOT . '/includes/database/' . $driver . '/query.inc'; // Get current list of modules and their files. $modules = db_query("SELECT * FROM {system} WHERE type = 'module'")->fetchAll(); // Get the list of files we are going to parse. $files = array(); foreach ($modules as &$module) { $module->info = unserialize($module->info); $dir = dirname($module->filename); // Store the module directory for use in hook_registry_files_alter(). $module->dir = $dir; if ($module->status) { // Add files for enabled modules to the registry. foreach ($module->info['files'] as $file) { $files["$dir/$file"] = array('module' => $module->name, 'weight' => $module->weight); } } } foreach (file_scan_directory('includes', '/\.inc$/') as $filename => $file) { $files["$filename"] = array('module' => '', 'weight' => 0); } $transaction = db_transaction(); try { // Allow modules to manually modify the list of files before the registry // parses them. The $modules array provides the .info file information, which // includes the list of files registered to each module. Any files in the // list can then be added to the list of files that the registry will parse, // or modify attributes of a file. drupal_alter('registry_files', $files, $modules); foreach (registry_get_parsed_files() as $filename => $file) { // Add the hash for those files we have already parsed. if (isset($files[$filename])) { $files[$filename]['hash'] = $file['hash']; } else { // Flush the registry of resources in files that are no longer on disc // or are in files that no installed modules require to be parsed. db_delete('registry') ->condition('filename', $filename) ->execute(); db_delete('registry_file') ->condition('filename', $filename) ->execute(); } } $parsed_files = _registry_parse_files($files); $unchanged_resources = array(); $lookup_cache = array(); if ($cache = cache_get('lookup_cache', 'cache_bootstrap')) { $lookup_cache = $cache->data; } foreach ($lookup_cache as $key => $file) { // If the file for this cached resource is carried over unchanged from // the last registry build, then we can safely re-cache it. if ($file && in_array($file, array_keys($files)) && !in_array($file, $parsed_files)) { $unchanged_resources[$key] = $file; } } module_implements('', FALSE, TRUE); _registry_check_code(REGISTRY_RESET_LOOKUP_CACHE); } catch (Exception $e) { $transaction->rollback(); watchdog_exception('registry', $e); throw $e; } // We have some unchanged resources, warm up the cache - no need to pay // for looking them up again. if (count($unchanged_resources) > 0) { cache_set('lookup_cache', $unchanged_resources, 'cache_bootstrap'); } }
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https://api.drupal.org/api/drupal/includes!registry.inc/function/_registry_update/7.x