_registry_rebuild
Definition
_registry_rebuild()
drupal/includes/registry.inc, line 24
Description
@see registry_rebuild.
Related topics
Name | Description |
|---|---|
| Code registry | The code registry engine. |
Code
function _registry_rebuild() {
// 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';
// Reset the resources cache.
_registry_get_resource_name();
// Get the list of files we are going to parse.
$files = array();
foreach (module_rebuild_cache() as $module) {
if ($module->status) {
$dir = dirname($module->filename);
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);
}
foreach (registry_get_parsed_files() as $filename => $file) {
// Add the md5 to those files we've already parsed.
if (isset($files[$filename])) {
$files[$filename]['md5'] = $file['md5'];
}
else {
// Flush the registry of resources in files that are no longer on disc
// or don't belong to installed modules.
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_registry')) {
$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] = $file;
}
}
_registry_check_code(REGISTRY_RESET_LOOKUP_CACHE);
module_implements(MODULE_IMPLEMENTS_CLEAR_CACHE);
cache_clear_all('*', 'cache_registry', TRUE);
// We have some unchanged resources, warm up the cache - no need to pay
// for looking them up again.
if (count($unchanged_resources) > 0) {
cache_set('lookup_cache', $unchanged_resources, 'cache_registry');
}
}