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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL pthreads >= 2.0.0)
Worker 是一个具有持久化上下文的线程对象,通常用来重复使用线程。
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。
程序员必须保持入栈对象的引用,直到它执行完毕或者出栈。Pool 类提供了 Worker 对象的高层抽象, 它可以帮助程序员管理这些引用。
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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();