drupal_cron_run
Definition
drupal_cron_run()
drupal/includes/common.inc, line 3003
Description
Executes a cron run when called
Return value
Returns TRUE if ran successfully
Related topics
Name | Description |
|---|---|
| Input validation | Functions to validate user input. |
Code
function drupal_cron_run() {
// Allow execution to continue even if the request gets canceled.
@ignore_user_abort(TRUE);
// Increase the maximum execution time.
@set_time_limit(240);
// Fetch the cron semaphore
$semaphore = variable_get('cron_semaphore', FALSE);
if ($semaphore) {
if (REQUEST_TIME - $semaphore > 3600) {
// Either cron has been running for more than an hour or the semaphore
// was not reset due to a database error.
watchdog('cron', 'Cron has been running for more than an hour and is most likely stuck.', array(), WATCHDOG_ERROR);
// Release cron semaphore
variable_del('cron_semaphore');
}
else {
// Cron is still running normally.
watchdog('cron', 'Attempting to re-run cron while it is already running.', array(), WATCHDOG_WARNING);
}
}
else {
// Register shutdown callback
register_shutdown_function('drupal_cron_cleanup');
// Lock cron semaphore
variable_set('cron_semaphore', REQUEST_TIME);
// Iterate through the modules calling their cron handlers (if any):
module_invoke_all('cron');
// Record cron time
variable_set('cron_last', REQUEST_TIME);
watchdog('cron', 'Cron run completed.', array(), WATCHDOG_NOTICE);
// Release cron semaphore
variable_del('cron_semaphore');
// Return TRUE so other functions can check if it did run successfully
return TRUE;
}
}