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
/* 方法 */
/* 继承的方法 */
}目录
- Worker::collect — Collect references to completed tasks
- Worker::getStacked — 获取剩余的栈大小
- Worker::isShutdown — 状态检测
- Worker::shutdown — 关闭 Worker
- Worker::stack — 将要执行的任务入栈
- Worker::unstack — 将要执行的任务出栈
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User Contributed Notes 1 note
event2game at gmail dot com ¶
8 years ago
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();