php扩展中c++单例模式的全局对象实例被生成多个子进程销毁，为啥？该如何解决
php扩展中c++单例模式的全局对象实例被生成多个子进程销毁，为啥？？
在php扩展中是用了一个单例模式的全局对象，当http服务停止时通过日志查看并且打印进程号，发现析构函数被多次调用，并且是在不同的进程里（通过进程号观察）。 为什么会这样！ 不是说http服务启动一次 ，我那全局对象就实例化一次吗！ 服务停止时怎么会发生这么多怪异的现象！
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请问你如何知道析构函数被多次调用？另外是不是你在程序里有被实例化多次？
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是谁在响应 HTTP 请求？apache、IIS ...
PHP 在 HTTP 请求中的地位？web 服务器的应用程序
所以对于每一个与 PHP 相关的 HTTP 请求，都会触发一个 PHP 进（线）程
你的扩展是以动态链接库存在的，在进（线）程中是独立的
如果你想使你扩展的类被各进（线）程共享，就必须修改php的内核，不过无论是在什么系统中，这个内核都不是开源的，都是以库方式提供的
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你php是cgi跑的吧，那的确会不停的构造与析构，因为都是每次都是新的Php解释器进程加载一堆动态库，其中包括你那个静态的C++对象，每个PHP进程加载同一份动态库，但它们内存是隔离的。
楼主用fcgi跑php的话就不一样了，只有在并发请求数超过当前的fcgi进程数情况下才会创建新的fcgi进程，不过也肯定不是多进程共享的。
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