PHP 多線程擴展（正兒八經的線程）pthreads安裝

環境CentOS 6.3 64bit，php 5.4.5   pthreads需要線程安全環境，   下載php的安裝包，解壓：     tar zxvf php-5.4.5.tar.gz//名字是不是這個我不確定，自己去下載   安裝：   ./configure --enable-zts --prefix=/usr/local/php-zts   make   make install   結果就把線程安裝版的php安裝到了/usr/local/php-zts，目前我不了解開啟線程安全到底會帶來什麼影響，所以，就弄兩個測試版本。   下載和安裝pthreads:   tar zxvf pthreads   cd pthreads-0.0.45 // 本文的是第一個stable版本   /usr/local/php-zts/bin/phpize ./configure --with-php-config=/usr/local/php-zts/bin/php-config make make install       /usr/local/php-zts/bin/php -i|grep "php.ini" 找出php.ini的位置，修改它把ext=pthreads.so加入進入進去，因為我原來就有php，現在新裝的php.ini文件不存在我就考了一個過去……   pthreads-0.0.45/examples目錄下有些示例文件，比文檔有用，在線文檔根本不能說明問題，我修改了一個，執行了一下：

 
<?php  
/* 
* Sharing symbols 101 
* @NOTE Thread::fetch was never included in a release and was superceeded by object handlers 
*   pthreads allows read access to thread data from any context 
    pthreads allows write access to thread data from any context 
    carry on reading ... 
    work in progress ... 
*/  
class TestObject {  
    public $val;  
}  
  
class Fetching extends Thread {  
    public function run(){  
        /* 
        * of course ... 
        */  
        $this->sym = 10245;  
        $this->arr = array(  
            "1", "2", "3"  
        );  
        echo '6'.chr(10);  
        /* 
        * objects do work, no preparation needed ... 
        * read/write objects isn't finalized .. 
        * so do the dance to make it work ... 
        */  
        $obj = new TestObject();  
        $obj->val = "testval";  
        $this->obj = $obj;  
        echo '7'.chr(10);  
        /* 
        * will always work 
        */  
        $this->objs = serialize($this->obj);  
        echo '8'.chr(10);  
        /* 
        * nooooooo 
        */  
        $this->res = fopen("php://stdout", "w");  
        echo '9'.chr(10);  
        /* 
        * tell the waiting process we have created symbols and fetch will succeed 
        */  
        $this->synchronized(function(){  
            $this->notify();  
        });  
        echo '10'.chr(10);  
        /* wait for the process to be finished with the stream */  
        $this->synchronized(function(){  
            $this->wait();  
        });  
        echo '11'.chr(10);  
    }  
}  
echo '0'.chr(10);  
$thread = new Fetching();  
echo '1'.chr(10);  
$thread->start();  
//sleep(1); 加了這個就不能正常工作，真奇怪  
echo '2'.chr(10);  
$thread->synchronized(function($me){  
    echo '3'.chr(10);  
    $me->wait();  
    echo '4'.chr(10);  
}, $thread);  
echo '5'.chr(10);  
  
/* 
* we just got notified that there are symbols waiting 
*/  
foreach(array("sym", "arr", "obj", "objs", "res") as $symbol){  
    printf("\$thread->%s: ", $symbol);     
    $fetched = $thread->$symbol;  
    if ($fetched) {  
        switch($symbol){  
            /* 
            * manual unserialize 
            */  
            case "objs":  
                var_dump(unserialize($fetched));  
            break;  
              
            default: var_dump($fetched);  
        }  
    }  
    printf("\n");  
}  
  
/* notify the thread so it can destroy resource */  
$thread->synchronized(function($me){  
    $me->notify();  
}, $thread);  
?>  

/usr/local/php-zts/bin/php Fetch.php

結果：

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2
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10
4
5
$thread->sym: int(10245)
 
$thread->arr: array(3) {
  [0]=>
  string(1) "1"
  [1]=>
  string(1) "2"
  [2]=>
  string(1) "3"
}
 
$thread->obj: object(TestObject)#2 (1) {
  ["val"]=>
  string(7) "testval"
}
 
$thread->objs: object(TestObject)#2 (1) {
  ["val"]=>
  string(7) "testval"
}
 
$thread->res: resource(3) of type (stream)
 
11