PHP _update_cache_clear函数代码示例

 /**
  * Obtains release info for all installed projects via update.module.
  *
  * @see update_get_available().
  * @see update_manual_status().
  */
 protected function getAvailableReleases()
 {
     // We force a refresh if the cache is not available.
     if (!cache_get('update_available_releases', 'cache_update')) {
         $this->refresh();
     }
     $available = update_get_available(TRUE);
     // Force to invalidate some update_status caches that are only cleared
     // when visiting update status report page.
     if (function_exists('_update_cache_clear')) {
         _update_cache_clear('update_project_data');
         _update_cache_clear('update_project_projects');
     }
     return $available;
 }

 /**
  * Obtains release info for all installed projects via update.module.
  *
  * @see update_get_available().
  * @see update_manual_status().
  */
 protected function getAvailableReleases()
 {
     // Force to invalidate some caches that are only cleared
     // when visiting update status report page. This allow to detect changes in
     // .info files.
     _update_cache_clear('update_project_data');
     _update_cache_clear('update_project_projects');
     // From update_get_available(): Iterate all projects and create a fetch task
     // for those we have no information or is obsolete.
     $available = _update_get_cached_available_releases();
     module_load_include('inc', 'update', 'update.compare');
     $update_projects = update_get_projects();
     foreach ($update_projects as $key => $project) {
         if (empty($available[$key])) {
             update_create_fetch_task($project);
             continue;
         }
         if ($project['info']['_info_file_ctime'] > $available[$key]['last_fetch']) {
             $available[$key]['fetch_status'] = UPDATE_FETCH_PENDING;
         }
         if (empty($available[$key]['releases'])) {
             $available[$key]['fetch_status'] = UPDATE_FETCH_PENDING;
         }
         if (!empty($available[$key]['fetch_status']) && $available[$key]['fetch_status'] == UPDATE_FETCH_PENDING) {
             update_create_fetch_task($project);
         }
     }
     // Set a batch to process all pending tasks.
     $batch = array('operations' => array(array('update_fetch_data_batch', array())), 'finished' => 'update_fetch_data_finished', 'file' => drupal_get_path('module', 'update') . '/update.fetch.inc');
     batch_set($batch);
     drush_backend_batch_process();
     // Clear any error set by a failed update fetch task. This avoid rollbacks.
     drush_clear_error();
     // Calculate update status data.
     $available = _update_get_cached_available_releases();
     return $available;
 }

/**
 * Flush all persistent and static caches.
 *
 * This hook asks your module to clear all of its static caches,
 * in order to ensure a clean environment for subsequently
 * invoked data rebuilds.
 *
 * Do NOT use this hook for rebuilding information. Only use it to flush custom
 * caches.
 *
 * Static caches using drupal_static() do not need to be reset manually.
 * However, all other static variables that do not use drupal_static() must be
 * manually reset.
 *
 * This hook is invoked by drupal_flush_all_caches(). It runs before module data
 * is updated and before hook_rebuild().
 *
 * @see drupal_flush_all_caches()
 * @see hook_rebuild()
 */
function hook_cache_flush()
{
    if (defined('MAINTENANCE_MODE') && MAINTENANCE_MODE == 'update') {
        _update_cache_clear();
    }
}

/**
 * Respond to themes being disabled.
 *
 * @param array $theme_list
 *   Array containing the names of the themes being disabled.
 *
 * @see theme_disable()
 */
function hook_themes_disabled($theme_list)
{
    // Clear all update module caches.
    _update_cache_clear();
}

 /**
  * @param string $extension
  *
  * @return array Context result generated by Drupal.
  *
  * @throws Oxygen_Exception
  *
  * @see update_authorize_run_update()
  */
 public function updateExtension($extension)
 {
     module_load_include('inc', 'update', 'update.manager');
     drupal_get_updaters();
     $directory = _update_manager_extract_directory();
     $projectLocation = $directory . '/' . $extension;
     $updater = Updater::factory($projectLocation);
     $projectRealLocation = drupal_realpath($projectLocation);
     // If the owner of the directory we extracted is the same as the
     // owner of our configuration directory (e.g. sites/default) where we're
     // trying to install the code, there's no need to prompt for FTP/SSH
     // credentials. Instead, we instantiate a FileTransferLocal and invoke
     // update_authorize_run_install() directly.
     if (fileowner($projectRealLocation) !== fileowner(DRUPAL_ROOT . '/' . conf_path())) {
         throw new Oxygen_Exception(Oxygen_Exception::PROJECT_MANAGER_FILE_SYSTEM_NOT_WRITABLE, array('projectOwner' => fileowner($projectRealLocation), 'siteOwner' => fileowner(conf_path())));
     }
     module_load_include('inc', 'update', 'update.authorize');
     // @TODO: Implement other file transfer types.
     $fileTransfer = new FileTransferLocal(DRUPAL_ROOT);
     update_authorize_batch_copy_project($extension, get_class($updater), $projectRealLocation, $fileTransfer, $context);
     // Reset the cache for this extension only, so we may immediately update the dashboard.
     // Hacky way to do it, but most efficient.
     module_load_include('inc', 'update', 'update.fetch');
     module_load_include('inc', 'update', 'update.compare');
     _update_cache_clear('update_project_projects');
     _update_cache_clear('update_project_data');
     $projects = update_get_projects();
     _update_process_fetch_task($projects[$extension]);
     return $context;
 }