function drupal_file_scan_write_cache

Writes the file scan cache to the persistent cache.

This cache stores all files marked as missing or moved after a file scan to prevent unnecessary file scans in subsequent requests. This cache is cleared in system_list_reset() (i.e. after a module/theme rebuild).

File

includes/bootstrap.inc, line 1220

Code

function drupal_file_scan_write_cache() {
    // Only write to the persistent cache if requested, and if we know that any
    // data previously in the cache was successfully loaded and merged in by
    // _drupal_file_scan_cache().
    $file_scans =& _drupal_file_scan_cache();
    if (isset($file_scans['#write_cache']) && isset($file_scans['#cache_merge_done'])) {
        unset($file_scans['#write_cache']);
        cache_set('_drupal_file_scan_cache', $file_scans, 'cache_bootstrap');
    }
}