Worker 类

(PECL pthreads >= 2.0.0)

简介

Worker 是一个具有持久化上下文的线程对象，通常用来在多个线程中使用。

当一个 Worker 对象开始之后，会执行它的 run 方法，但是即使 run 方法执行完毕，线程本身也不会消亡，除非遇到以下情况：

  • Worker 对象超出作用范围（没有指向它的引用了）

  • 代码调用了 Worker 对象的 shutdown 方法

  • 整个脚本终止了

这意味着程序员可以在程序执行过程中重用这个线程上下文： 在 Worker 对象的栈中添加对象会激活 Worker 对象执行被加入对象的 run 方法。

类摘要

Worker extends Thread implements Traversable , Countable , ArrayAccess {
/* 方法 */
public collect ([ Callable $collector ] ) : int
public getStacked ( void ) : int
public isShutdown ( void ) : bool
public isWorking ( void ) : bool
public shutdown ( void ) : bool
public stack ( Threaded &$work ) : int
public unstack ( void ) : int
/* 继承的方法 */
public Thread::detach ( void ) : void
public Thread::getCreatorId ( void ) : int
public static Thread::getCurrentThread ( void ) : Thread
public static Thread::getCurrentThreadId ( void ) : int
public Thread::getThreadId ( void ) : int
public static Thread::globally ( void ) : mixed
public Thread::isJoined ( void ) : bool
public Thread::isStarted ( void ) : bool
public Thread::join ( void ) : bool
public Thread::kill ( void ) : void
public Thread::start ([ int $options ] ) : bool
}

Table of Contents

User Contributed Notes

event2game at gmail dot com 31-Oct-2013 03:22
There's one way to shared datas between Workers, that is using Stackable:
<?php
class data extends Stackable{
    //private $name;
    public function __construct($_name) {
        //$this->name = $_name;//if you set any variable, workers will get the variable, so do not set any variable
        echo __FILE__.'-'.__LINE__.'<br/>'.chr(10);
    }
    public function run(){
        echo __FILE__.'-'.__LINE__.'<br/>'.chr(10);
    }
}
class readWorker extends Worker {
    public function __construct(&$_data) {
        $this->data = $_data;//
    }
    public function run(){
        while(1){
            if($arr=$this->data->shift())//receiving datas
            {
                echo 'Received data:'.print_r($arr,1).chr(10);
            }else usleep(50000);
        }
    }
}
class writeWorker extends Worker {
    public function __construct(&$_data) {
        $this->data = $_data;//
    }
    public function run(){
        while(1){
            $this->data[] = array(time(),rand());//writting datas
            usleep(rand(50000, 1000000));
        }
    }

}
$data = new data('');
$reader = new readWorker($data);
$writer = new writeWorker($data);
$reader->start();
$writer->start();
?>
Also you can use $readWorker[] = $some_data; then use $this->shift() in readWorker to share datas with readWorker, but if you do so you can't have variables in readWorker as all variales will be shift by shift();