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

class Threaded implements Collectable, Traversable, Countable, ArrayAccess {

/* 方法 */

public chunk(int $size, bool $preserve): array

public count(): int

public extend(string $class): bool

public isRunning(): bool

public isTerminated(): bool

publicmerge(mixed $from, bool $overwrite = ?): bool

public notify(): bool

public notifyOne(): bool

public pop(): bool

public run(): void

public shift(): boolean

public synchronized(Closure $block, mixed $... = ?): mixed

public wait(int $timeout = ?): bool

}

Threaded::chunk — 操作
Threaded::count — 操作
Threaded::extend — Runtime Manipulation
Threaded::isRunning — 状态检测
Threaded::isTerminated — 状态检测
Threaded::merge — 操作
Threaded::notify — 同步控制
Threaded::notifyOne — Synchronization
Threaded::pop — 操作
Threaded::run — 执行
Threaded::shift — Manipulation
Threaded::synchronized — 同步控制
Threaded::wait — Synchronization

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User Contributed Notes 3 notes

down

jtbibliomania at gmail dot com ¶

2 years ago


It's worth mentioning here that, since v2.0.0, 'Stackable' class was an alias for 'Threaded' class but has been removed since.

down

derkontrollfreak+php at gmail dot com ¶

6 years ago


> 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.

down

-47

312036773 at qq dot com ¶

6 years ago


<?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();
}

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官方地址：https://www.php.net/manual/en/class.threaded.php

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Threaded 类

简介

类摘要

目录

User Contributed Notes 3 notes