PHP 多线程扩展（正儿八经的线程）pthreads安装

环境CentOS 6.3 64bit，php 5.4.5

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-zts --prefix=/usr/local/php-zts //或者 --enable-maintainer-zts

make

make install

结果就把线程安装版的php安装到了/usr/local/php-zts，目前我不了解开启线程安全到底会带来什么影响，所以，就弄两个测试版本。

如果遇到undefined reference to `executor_globals_id'

make clean就可以了

下载和安装pthreads:

tar zxvf pthreads

cd pthreads-0.0.45 // 本文的是第一个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……

pthreads-0.0.45/examples目录下有些示例文件，比文档有用，在线文档根本不能说明问题，我修改了一个，执行了一下：

<?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);
?>

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

结果：

0

1

2

3

6

7

8

9

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

发个全点儿的php编译参数：

./configure

--prefix=/usr/local/php-zts

--enable-sockets

--enable-pcntl

--enable-maintainer-zts

--enable-sysvmsg

--enable-mbstring

--with-mysql=/usr

--with-mysql-sock=/var/lib/mysql/mysql.sock  

--with-mysqli=/usr/lib64/mysql/mysql_config

--with-pdo-mysql=/usr/lib64/mysql/mysql_config/configure

我的QQ群：

PHPer&Webgame&移动开发，群号：95303036

windows版：

http://blog.csdn.net/aoyoo111/article/details/19020161