/**
* Collects the results form the workers and processes any pending signals
* @param int $sec timeout to wait for new results from the workers
* @throws WorkerPoolException
*/
protected function collectWorkerResults($sec = 0)
{
// dispatch signals
pcntl_signal_dispatch();
if (isset($this->workerProcesses) === FALSE) {
throw new WorkerPoolException('There is no list of worker processes. Maybe you destroyed the worker pool?', 1401179881);
}
$result = SimpleSocket::select($this->workerProcesses->getSockets(), array(), array(), $sec);
foreach ($result['read'] as $socket) {
/** @var $socket SimpleSocket */
$processId = $socket->annotation['pid'];
$result = $socket->receive();
$possibleArrayKeys = array('data', 'poolException', 'workerException');
if (is_array($result) && count($resultTypes = array_intersect(array_keys($result), $possibleArrayKeys)) === 1) {
// If the result has the expected format, free the worker and store the result.
// Otherwise, the worker may be abnormally terminated (fatal error, exit(), ...) and will
// fall in the reapers arms.
$this->workerProcesses->registerFreeProcessId($processId);
$result['pid'] = $processId;
$resultType = reset($resultTypes);
// Do not store NULL
if ($resultType !== 'data' || $result['data'] !== NULL) {
array_push($this->results, $result);
}
}
}
// dispatch signals
pcntl_signal_dispatch();
}
