pcntl_fork 多进程处理

 

多进程

$goingTasks = array(1,2,3,4,5,6,7);
$max_chlid_fork = 4;

foreach($goingTasks as $goingTask) {

    fork($goingTask);//子进程
}

/**
 * 子进程
 */
function fork($goingTask){
    static $curChildPro = 1;
    global $max_chlid_fork;
    //$curChildPro++;
    _echo_msg(' Childs_Num:Now['.$curChildPro.']');
    //多进程处理
    $pid = pcntl_fork();
    if($pid){
        //父进程运行代码,达到上限时父进程阻塞等待任一子进程退出后while循环继续
        _echo_msg(' This is Parent:Child('.$pid.')');
        if($curChildPro >= $max_chlid_fork) {
            _echo_msg(' This is Parent:Childs Max['.$max_chlid_fork.'],Now['.$curChildPro.'] Wating...');
            pcntl_wait($status);
            _echo_msg(' This is Parent:Childs Max['.$max_chlid_fork.'],Now['.$curChildPro.'] Going...'.$status);
            //$curChildPro--;
        }else{
            $curChildPro++;
        }
        //继续下一个进程
    }else if($pid == -1){
        $curChildPro--;
        //报错
        _echo_msg(' This is Child Woring!');
        exit;
    }else{
        //$curChildPro++;
        _echo_msg(' $pid ['.$pid.']');
        _echo_msg(' $curChildPro ['.$curChildPro.']');
        //---------子进程运行代码---------
        $cpid = getmypid();
        _echo_msg(' This is Child('.$cpid.') Begin['.date('Y-m-d H:i:s').']');
        work($goingTask);
        _echo_msg(' This is Child('.$cpid.') End['.date('Y-m-d H:i:s').']'.PHP_EOL);
        exit;//子进程结束 需跳出
    }

}

function work($goingOne){

    while(true) {
        $return = dealOneTask($goingOne);
        if(!$return) {
            break;
        }
    }
}

function dealOneTask($goingOne) {
    sleep(60);
}

function _echo_msg($msg) {
    echo date('Y-m-d H:i:s') . $msg . PHP_EOL;
}

　　

 

连接数据库时， 需要重置连接

MySQLi

static function ResetConnect(){
        //多进行脚本 需要重制链接
        self::$links = array();
        self::$masterDBInfos = array();
        self::$slaveDBInfos = array();
    }