swoole process进程 多分发

<?php
/**
 * Created by PhpStorm.
 * User: whitneywang
 * Date: 2018/6/4
 * Time: 14:14
 */

//第二个参数为true时，不输出TODO里的输出内容，显示会放到管道中
$process = new swoole_process(function (swoole_process $pro) {
    //todo
    //开启HTTPserver 类似在linux里运行一个PHP文件
    //exec第二个参数要为数组
    //Swoole\Process::exec() expects parameter 2 to be array
    $pro->exec('/home/work/bin/php',[ __DIR__.'/../server/http.php']);
}, false);
$pid = $process->start();
print_r($pid);
//回收子进程
swoole_process::wait();

 第二个参数为true只输出进程PID:

第二个参数为false

输出子进程

ps aux | grep process/process.php  可以看主进程 15594 就是上面15595的父进程

pstree -p 15594 通过子进程ID，可看到树结构

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ps aft | grep http

场景：

curl

<?php

class Curl
{
    const URLS = [
        'http://baidu.com',
        'http://qq.com',
        'http://sina.com.cn'
    ];


    function __construct()
    {
        echo 'process start time ' . time("Ymd H:i:s").PHP_EOL;
    }

    /**
     * 闭包里不好直接用变量,要用use
     * @return bool
     */
    public function execute()
    {
        $workers = [];
        foreach (self::URLS as $key => $val) {
            $process = new swoole_process(function (swoole_process $pro) use ($key, $val) {
                //curl
                $content = $this-> curlData($val);
                echo $content . PHP_EOL;
                $pro->write($content. PHP_EOL); //$pro->write也可以直接输出管道里的内容
            }, true); //true的情况下，输出信息会在管道里
            $pid = $process->start();
            $workers[$pid] = $process;
        }
        // 获取管道里的内容
        foreach ($workers as $pros) {
            print_r($pros->read());
        }
        echo 'process end time ' . time("Ymd H:i:s");
    }

    /**
     * 模拟CURL请求
     * @param $url
     * @return string
     */
    function curlData($url)
    {
        //正常这里写CURL 或者file_get_content sleep
        sleep(1);
        return $url . ' succ'.PHP_EOL;
    }

}

$ws = new Curl();
$result = $ws->execute(1, 'test');
print_r($result . PHP_EOL);
echo 'start:' . PHP_EOL;