Threaded 类

(PECL pthreads >= 2.0.0)

简介

Threaded 对象提供支持 pthreads 操作的基本功能，包括同步方法以及其他对程序员很有帮助的接口。

重要的是，Threaded 提供了隐式的线程安全机制，这个对象中的所有操作都是线程安全的。

类摘要

Threaded implements Collectable , Traversable , Countable , ArrayAccess {
/* 方法 */
public array chunk ( integer $size , boolean $preserve )
public integer count ( void )
public bool extend ( string $class )
public Threaded from ( Closure $run [, Closure $construct [, array $args ]] )
public array getTerminationInfo ( void )
public boolean isRunning ( void )
public boolean isTerminated ( void )
public boolean isWaiting ( void )
public boolean lock ( void )
public boolean merge ( mixed $from [, bool $overwrite ] )
public boolean notify ( void )
public boolean notifyOne ( void )
public boolean pop ( void )
public void run ( void )
public boolean shift ( void )
public mixed synchronized ( Closure $block [, mixed $... ] )
public boolean unlock ( void )
public boolean wait ([ integer $timeout ] )
}

Table of Contents

User Contributed Notes

312036773 at qq dot com 11-Nov-2015 04:58
<?php

class Wallet{
    public $balance;
    public function __construct($money){
        $this->balance = $money;
    }
    public function getBalance(){
        return $this->balance;
    }
    public function setBalance($value){
        $this->balance = $value;
    }
}
class MyThread extends Thread{
    private $wallet;
    private $std;
    public function __construct($wallet,$std){
        $this->wallet = $wallet;
        $this->std = $std;
    }
    public function run(){
        $this->synchronized(function($thread){
                $hack = $this->wallet;
                if($hack->getBalance() - 80 >0){
                    sleep(1);
                    $hack->setBalance($hack->getBalance() - 80);
                    echo $this->getThreadId() . "reduce 80 successful<br/>Current num is：" . $hack->getBalance() . "<Br/>";
                    //Here is Wrong!  The result is bool(false)????!!!!
                    var_dump($hack == $this->wallet);
                }
                 else
                     echo $this->getThreadId() . "reduce fail<br/>Current num is：" . $hack->getBalance() . "<br/>";
           
        },$this->std);
    }
}
$wallet = new Wallet(200);
$std = new stdClass();
for($x=0;$x<3;$x++){
    $pool[] = new MyThread($wallet,$std);
    $pool[$x]->start();
}
derkontrollfreak+php at gmail dot com 12-Jul-2015 04:50
> Threaded objects, most importantly, provide implicit safety for the programmer; all operations on the object scope are safe.

However, this comes with a trade-off: Operations on the instance scope are slower than on plain PHP objects.

Static properties are not affected as they are thread-local.