function module_rebuild_cache in Drupal 6

Same name and namespace in other branches

1. 5 includes/module.inc \module_rebuild_cache()

Rebuild the database cache of module files.

Return value

The array of filesystem objects used to rebuild the cache.

10 calls to module_rebuild_cache()

drupal_install_modules in includes/install.inc

Calls the install function and updates the system table for a given list of modules.

drupal_install_system in includes/install.inc

Callback to install the system module.

help_links_as_list in modules/help/help.admin.inc

install_tasks in ./install.php

Tasks performed after the database is initialized.

system_admin_by_module in modules/system/system.admin.inc

Menu callback; prints a listing of admin tasks for each installed module.

... See full list

File

includes/module.inc, line 95

API for loading and interacting with Drupal modules.

Code

function module_rebuild_cache() {
  $write_database = TRUE;

  // If lock not acquired, return $files data without writing to database.
  if (!lock_acquire('module_rebuild_cache')) {
    $write_database = FALSE;

    // Wait for the parallel thread to be done so we are more likely
    // to get updated and consistent data.
    lock_wait('module_rebuild_cache');
  }

  // Get current list of modules
  $files = drupal_system_listing('\\.module$', 'modules', 'name', 0);

  // Extract current files from database.
  system_get_files_database($files, 'module');
  ksort($files);

  // Set defaults for module info
  $defaults = array(
    'dependencies' => array(),
    'dependents' => array(),
    'description' => '',
    'version' => NULL,
    'php' => DRUPAL_MINIMUM_PHP,
  );
  foreach ($files as $filename => $file) {

    // Look for the info file.
    $file->info = drupal_parse_info_file(dirname($file->filename) . '/' . $file->name . '.info');

    // Skip modules that don't provide info.
    if (empty($file->info)) {
      unset($files[$filename]);
      continue;
    }

    // Invoke hook_system_info_alter() to give installed modules a chance to
    // modify the data in the .info files if necessary.
    drupal_alter('system_info', $files[$filename]->info, $files[$filename]);

    // Merge in defaults and save.
    $files[$filename]->info = $file->info + $defaults;
  }

  // If lock not acquired, return $files data without writing to database.
  if ($write_database) {
    foreach ($files as $filename => $file) {

      // Log the critical hooks implemented by this module.
      $bootstrap = 0;
      foreach (bootstrap_hooks() as $hook) {
        if (module_hook($file->name, $hook)) {
          $bootstrap = 1;
          break;
        }
      }

      // Update the contents of the system table:
      if (isset($file->status)) {
        db_query("UPDATE {system} SET info = '%s', name = '%s', filename = '%s', bootstrap = %d WHERE filename = '%s'", serialize($files[$filename]->info), $file->name, $file->filename, $bootstrap, $file->old_filename);
      }
      else {

        // This is a new module.
        $files[$filename]->status = 0;
        $files[$filename]->throttle = 0;
        db_query("INSERT INTO {system} (name, info, type, filename, status, throttle, bootstrap) VALUES ('%s', '%s', '%s', '%s', %d, %d, %d)", $file->name, serialize($files[$filename]->info), 'module', $file->filename, 0, 0, $bootstrap);
      }
    }
    lock_release('module_rebuild_cache');
  }
  $files = _module_build_dependencies($files);
  return $files;
}