PHP实现简单的协程任务调度demo示例

 taskId = $taskId; $this->coroutine = $coroutine; } public function getTaskId() { return $this->taskId; } public function setSendValue($sendValue) { $this->sendValue = $sendValue; } public function run() { if ($this->beforeFirstYield) { $this->beforeFirstYield = false; return $this->coroutine->current(); } else { $retval = $this->coroutine->send($this->sendValue); $this->sendValue = null; return $retval; } } public function isFinished() { return !$this->coroutine->valid(); } } class Scheduler { protected $maxTaskId = 0; protected $taskMap = []; // taskId => task protected $taskQueue; public function __construct() { $this->taskQueue = new SplQueue(); } public function newTask(Generator $coroutine) { $tid = ++$this->maxTaskId; $task = new Task($tid, $coroutine); $this->taskMap[$tid] = $task; $this->schedule($task); return $tid; } public function schedule(Task $task) { $this->taskQueue->enqueue($task); } public function run() { while (!$this->taskQueue->isEmpty()) { $task = $this->taskQueue->dequeue(); $task->run(); if ($task->isFinished()) { unset($this->taskMap[$task->getTaskId()]); } else { $this->schedule($task); } } } } function task1() { for ($i = 1; $i <= 10; ++$i) { echo "This is task 1 iteration $i.\n"; sleep(1); yield; } } function task2() { for ($i = 1; $i <= 10; ++$i) { echo "This is task 2 iteration $i.\n"; sleep(1); yield; } } $scheduler = new Scheduler; $scheduler->newTask(task1()); $scheduler->newTask(task2()); $scheduler->run();