/**
* Lock job.
*
* Background Process doesn't internally provide a unique id
* for the running process, so we'll have to add that ourselves.
* We store the unique lock id in the second callback argument.
*/
public function lock($job)
{
$handle = 'uc-' . $job->name;
$process = new BackgroundProcess($handle);
if (!$process->lock()) {
return FALSE;
}
$lock_id = $job->name . ':' . uniqid('bgpl', TRUE);
global $user;
background_process_set_process($process->handle, '__LOCKED__', $user->uid, array($job->name, $lock_id), $process->token);
return $lock_id;
}
