PHP 线程安全，多线程

最新推荐文章于 2025-02-25 00:10:33 发布

cogbee

最新推荐文章于 2025-02-25 00:10:33 发布

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分类专栏： PHP

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关于PHP线程，有一个库： https://github.com/krakjoe/pthreads 这个库还挺不错。

pthreads需要线程安全环境，

下载php的安装包，解压：

tar zxvf php-5.4.5.tar.gz//名字是不是这个我不确定，自己去下载

安装：

./configure --enable-maintainer-zts --prefix=/usr/local/php-zts

make

make install

cd /usr/local/src/

wget http://pecl.php.net/get/pthreads-2.0.5.tgz

tar zxvf pthreads-2.0.5.tgz

cd pthreads-2.0.5(进入这个目录。然后执行下面一条操作语句)

/usr/local/php5.5.12-zts/bin/phpize（这是一个操作语句，执行之后会出现configure）

./configure --with-php-config=/usr/local/php5.5.12-zts/bin/php-config

make

make install

php.ini添加 : extension=pthreads.so;

如果你是之前安装过php，那么，/usr/local/php-zts/bin/php -i|grep "php.ini" 这个语句帮你找到php.ini位置。

找出php.ini的位置，修改它把ext=pthreads.so加入进入进去，因为我原来就有php，现在新装的php.ini文件不存在我就考了一个过去……

/usr/local/php5.5.12-zts/bin/php -i | grep -i pthreads

测试代码：

 
   <?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 
   (

);

 
            
   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); 加了这个就不能正常工作，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 
   );  
  

?>

在命令框输入： /usr/local/php-zts/bin/php Fetch.php

直接在网页没有输出，需要调用PHP脚本运行。

参照文章：

http://www.2cto.com/kf/201309/245093.html

http://blog.youkuaiyun.com/crz03128/article/details/25954441

编译了很久，做个记录。