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Processor.php
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Processor.php
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<?php
namespace DesignPatterns\Creational\Pool;
class Processor
{
private $pool;
private $processing = 0;
private $maxProcesses = 3;
private $waitingQueue = [];
public function __construct(Pool $pool)
{
$this->pool = $pool;
}
public function process($image)
{
if ($this->processing++ < $this->maxProcesses) {
$this->createWorker($image);
} else {
$this->pushToWaitingQueue($image);
}
}
private function createWorker($image)
{
$worker = $this->pool->get();
$worker->run($image, array($this, 'processDone'));
}
public function processDone($worker)
{
$this->processing--;
$this->pool->dispose($worker);
if (count($this->waitingQueue) > 0) {
$this->createWorker($this->popFromWaitingQueue());
}
}
private function pushToWaitingQueue($image)
{
$this->waitingQueue[] = $image;
}
private function popFromWaitingQueue()
{
return array_pop($this->waitingQueue);
}
}