PHPDaemon\Structures\StackCallbacks::executeAll PHP Method

    public function executeAll(...$args)
    {
        if ($this->isEmpty()) {
            return 0;
        }
        $n = 0;
        do {
            if ($cb = $this->shift()) {
                $cb(...$args);
                ++$n;
                if ($cb instanceof CallbackWrapper) {
                    $cb->cancel();
                }
            }
        } while (!$this->isEmpty());
        return $n;
    }

 /**
  * Runtime of Master process
  * @return void
  */
 protected function run()
 {
     Daemon::$process = $this;
     $this->prepareSystemEnv();
     class_exists('Timer');
     // ensure loading this class
     gc_enable();
     /* This line must be commented according to current libevent binding implementation. May be uncommented in future. */
     //$this->eventBase = new \EventBase;
     if ($this->eventBase) {
         $this->registerEventSignals();
     } else {
         $this->registerSignals();
     }
     $this->workers = new Collection();
     $this->collections['workers'] = $this->workers;
     $this->ipcthreads = new Collection();
     $this->collections['ipcthreads'] = $this->ipcthreads;
     Daemon::$appResolver->preload(true);
     $this->callbacks = new StackCallbacks();
     $this->spawnIPCThread();
     $this->spawnWorkers(min(Daemon::$config->startworkers->value, Daemon::$config->maxworkers->value));
     $this->timerCb = function ($event) use(&$cbs) {
         static $c = 0;
         ++$c;
         if ($c > 0xfffff) {
             $c = 1;
         }
         if ($c % 10 == 0) {
             gc_collect_cycles();
         }
         if (!$this->lastMpmActionTs || microtime(true) - $this->lastMpmActionTs > $this->minMpmActionInterval) {
             $this->callMPM();
         }
         if ($event) {
             $event->timeout();
         }
     };
     if ($this->eventBase) {
         // we are using libevent in Master
         Timer::add($this->timerCb, 1000000.0 * Daemon::$config->mpmdelay->value, 'MPM');
         while (!$this->breakMainLoop) {
             $this->callbacks->executeAll($this);
             if (!$this->eventBase->dispatch()) {
                 break;
             }
         }
     } else {
         // we are NOT using libevent in Master
         $lastTimerCall = microtime(true);
         while (!$this->breakMainLoop) {
             $this->callbacks->executeAll($this);
             if (microtime(true) > $lastTimerCall + Daemon::$config->mpmdelay->value) {
                 call_user_func($this->timerCb, null);
                 $lastTimerCall = microtime(true);
             }
             $this->sigwait();
         }
     }
 }