/**
* Executes any pending timers. Returns the number of timers executed.
*
* @return int
*
* @internal
*/
public function tick() : int
{
$count = 0;
$time = microtime(true);
while (!$this->queue->isEmpty()) {
list($timer, $timeout) = $this->queue->top();
if (!$this->timers->contains($timer) || $timeout !== $this->timers[$timer]) {
$this->queue->extract();
// Timer was removed from queue.
continue;
}
if ($this->timers[$timer] > $time) {
// Timer at top of queue has not expired.
return $count;
}
// Remove and execute timer. Replace timer if persistent.
$this->queue->extract();
if ($timer->isPeriodic()) {
$timeout = $time + $timer->getInterval();
$this->queue->insert([$timer, $timeout], -$timeout);
$this->timers[$timer] = $timeout;
} else {
$this->timers->detach($timer);
}
// Execute the timer.
$timer->call();
++$count;
}
return $count;
}
/**
* {@inheritdoc}
*/
public function tick()
{
if (!$this->queue->isEmpty()) {
$immediate = $this->queue->shift();
$this->immediates->detach($immediate);
// Execute the immediate.
$immediate->call();
return true;
}
return false;
}