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SimpleFork php多进程并发框架

php中文网

发布： 2016-07-30 13:29:40

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SimpleFork
项目地址：https://github.com/huyanping/simple-fork-php基于PCNTL扩展的多进程进程并发框架，接口类似与Java的Thread和Runnable为什么要写SimpleFork
多进程程序的编写相比较多线程编写更加复杂，需要考虑进程回收、同步、互斥、通信等问题。对于初学者来说，处理上述问题会比较困难。尤其是信号处理和进程通信这块，很难做到不出问题。 SimpleFork提供一套类似于JAVA多线程的进程控制接口，提供回收、同步、互斥、通信等方案，开发者可以关注业务问题，不需要过多考虑进程控制。引入

composer require jenner/simple_fork

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<span><span>require</span><span>path</span><span>/</span><span>to</span><span>/</span><span>SimpleFork</span><span>/</span><span>autoload</span><span>.</span><span>php</span></span>

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依赖
必须

ext-pcntl 进程控制

可选

ext-sysvmsg 消息队列

ext-sysvsem 同步互斥锁

ext-sysvshm 共享内存

特性

提供进程池

自动处理僵尸进程回收，支持无阻塞调用

提供共享内存、System V 消息队列、Semaphore锁，方便IPC通信（进程通信）

提供Process和Runnable两种方式实现进程

可以实时获取到进程状态

shutdown所有进程或单独stop一个进程时，可以注册覆盖beforeExit()方法，返回true则退出，false继续运行（在某些场景，进程不能立即退出）

支持子进程运行时reload

注意事项

System V 消息队列由于在程序退出时可能存在尚未处理完的数据，所以不会销毁。如果需要销毁，请调用$queue->remove()方法删除队列

共享内存会在所有进程退出后删除

Semaphore对象会在对象回收时进行销毁

进程池start()后，需要调用wait()进行僵尸进程回收，可以无阻塞调用

获取进程状态(调用isAlive()方法)前，最好调用一个无阻塞的wait(false)进行一次回收，由于进程运行状态的判断不是原子操作，所以isAlive()方法不保证与实际状态完全一致

如果你不清楚在什么情况下需要在程序的最开始加入declare(ticks=1);，那么最好默认第一行都加入这段声明。

如何使用declare(ticks=1);

declare(ticks=1); 这段声明用于进程信号处理。如果注册了信号处理器，程序会没执行一行代码后自动检查是否有尚未处理的信号。http://php.net/manual/zh/control-structures.declare.php

TODO

提供更多功能的进程池，模仿java

提供第三方进程通信机制（Redis等）

更多的测试及示例程序

示例程序
更多示例程序见exmples目录simple.php

<span><span>class</span><span>TestRunnable</span><span>extends</span><span>\Jenner\SimpleFork\</span><span>Runnable</span>{</span><span><span>/**</span></span><span><span>     * 进程执行入口</span></span><span><span>     * <span>@return</span> mixed</span></span><span><span>     */</span></span><span><span>public</span><span>function</span><span>run</span>()</span><span>    {</span><span><span>echo</span><span><span>"</span>I am a sub process<span>"</span></span><span>.</span><span>PHP_EOL</span>;</span><span>    }</span><span>}</span><span><span>$process</span><span>=</span><span>new</span><span>\Jenner\SimpleFork\</span><span>Process</span>(<span>new</span><span>TestRunnable</span>());</span><span><span>$process</span><span>-></span>start();</span>

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shared_memory.php

<span><span>class</span><span>Producer</span><span>extends</span><span>\Jenner\SimpleFork\</span><span>Process</span>{</span><span><span>public</span><span>function</span><span>run</span>(){</span><span><span>for</span>(<span>$i</span><span>=</span><span>0</span>; <span>$i</span><span><</span><span>10</span>; <span>$i</span><span>&#43;&#43;</span>){</span><span><span>$this</span><span>-></span><span>cache</span><span>-></span>set(<span>$i</span>, <span>$i</span>);</span><span><span>echo</span><span><span>"</span>set {<span>$i</span>} : {<span>$i</span>}<span>"</span></span><span>.</span><span>PHH_EOL</span>;</span><span>        }</span><span>    }</span><span>}</span><span><span>class</span><span>Worker</span><span>extends</span><span>\Jenner\SimpleFork\</span><span>Process</span>{</span><span><span>public</span><span>function</span><span>run</span>(){</span><span><span>sleep</span>(<span>5</span>);</span><span><span>for</span>(<span>$i</span><span>=</span><span>0</span>; <span>$i</span><span><</span><span>10</span>; <span>$i</span><span>&#43;&#43;</span>){</span><span><span>echo</span><span><span>"</span>get {<span>$i</span>} : <span>"</span></span><span>.</span><span>$this</span><span>-></span><span>cache</span><span>-></span>get(<span>$i</span>) <span>.</span><span>PHP_EOL</span>;</span><span>        }</span><span>    }</span><span>}</span><span><span>$memory</span><span>=</span><span>new</span><span>\Jenner\SimpleFork\IPC\</span><span>SharedMemory</span>();</span><span><span>$producer</span><span>=</span><span>new</span><span>Producer</span>();</span><span><span>$producer</span><span>-></span>setCache(<span>$memory</span>);</span><span><span>$worker</span><span>=</span><span>new</span><span>Worker</span>();</span><span><span>$worker</span><span>-></span>setCache(<span>$memory</span>);</span><span><span>$pool</span><span>=</span><span>new</span><span>\Jenner\SimpleFork\</span><span>Pool</span>();</span><span><span>$pool</span><span>-></span>submit(<span>$producer</span>);</span><span><span>$pool</span><span>-></span>submit(<span>$worker</span>);</span><span><span>$pool</span><span>-></span>start();</span><span><span>$pool</span><span>-></span>wait();</span>

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