src/Master.php
public function start($block = true, $interval = 100)
    {
        $loop = $this->loop;
        $this->pool = new ParallelPool(function () use ($loop) {
            $loop->run();
        }, $this->count);

        $this->pool->start();
        $this->pool->keep($block, $interval);
    }
public function start($block = true, $interval = 100)
    {
        $loop = $this->loop;
        $this->pool = new ParallelPool(function () use ($loop) {
            $loop->run();
        }, $this->count);

        $this->pool->start();
        $this->pool->keep($block, $interval);
    }
start multi loop

@param bool $block
@param int $interval