根据响应时间动态调整执行线程数的代码

直接上代码

<?phpinterface Sender {public function send($message);}interface MessageQueue {public function pop();}class SendThread extends Thread {private $sender;private $messageQueue;protected $times;private $runtime;private $isStop;public function __construct(Sender $sender, MessageQueue $messageQueue, $times) {$this->sender = $sender;$this->messageQueue = $messageQueue;$this->times = $times;$this->runtime = 0;$this->isStop = false;}public function run() {while (!$this->isStop) {$runtime = 0;for ($i = 0; $i < $this->times; ++$i) {if (!$this->isStop) {$message = $this->messageQueue->pop();$start = microtime(true);$this->sender->send($message);$end = microtime(true);$runtime += ($end - $start);}}$this->runtime = $runtime;}}public function stop() {$this->isStop = true;}public function getRuntime() {return $this->runtime;}}abstract class ManageThread extends Thread {private $size;private $max;private $min;private $sleepTime;protected $times;private $avgRuntime;private $isStop;public function __construct($size, $max, $min, $sleepTime, $times) {$this->size = $size;$this->max = $max;$this->min = $min;$this->isStop = false;$this->sleepTime = $sleepTime;$this->times = $times;$this->avgRuntime = 0;}public function run() {$threadArray = array();for ($i = 0; $i < $this->size; ++$i) {$thread = $this->getNewSendThread();$threadArray[$i] = $thread;$thread->start();}while (!$this->isStop) {sleep($this->sleepTime);$sum = 0;for ($i = 0; $i < $this->size; ++$i) {$thread = $threadArray[$i];$sum += $thread->getRuntime();}$this->avgRuntime = $sum / $this->size;if ($this->avgRuntime > $this->max && $this->size > 1){$threadArray[$this->size - 1]->stop();$threadArray[$this->size - 1] = null;--$this->size;}if ($this->avgRuntime < $this->min){$threadArray[$this->size] = $this->getNewSendThread();++$this->size;}}for ($i = 0; $i < $this->size; ++$i) {$thread = $threadArray[$i];$thread->stop();}}public function stop() {$this->isStop = true;}abstract protected function getNewSendThread();public function getAvgRuntime() {return $this->avgRuntime;}public function getSize() {return $this->size;}}class MessegeSender implements Sender {public function send($message) {sleep(1); //响应时间}}class ICQMessageQueue implements MessageQueue {public function pop() {return "message";}}class MyManageThread extends ManageThread {protected function getNewSendThread() {return new SendThread(new MessegeSender(), new ICQMessageQueue(), $this->times);}}$manageThread = new MyManageThread(10, 10, 5, 20, 10);$manageThread->start();for ($i = 0; $i < 20; ++$i) {echo $manageThread->getAvgRuntime(), ' ', $manageThread->getSize(), "\n";sleep(10);}$manageThread->stop();$manageThread->join();