我要寻找一种方式来编程得到.NET和Java某一类类型的实例的数量。

I am looking for a way to programatically get the number of instances of a certain class type in .NET and Java.

比方说我有类Foo。我希望能够在同一个进程，让富的所有实例的当前计数。 不过，我不能修改富，所以静态INT具有计数超出。此外，我不能只加我为一些静态列表中的所有实例，并计算。我希望能够，只是说：

Say for example I have class Foo. I want to be able to, in the same process, get a current count of all instance of Foo. However I cannot modify Foo, so a static int with counting is out. Also I cannot just add all instances I make to some static list and count that. I want to be able to just say:

System.GC.numberOf< Foo >()

什么的。

我一直在寻找通过垃圾收集器，但我找不到任何相关的方法。

I was looking through the garbage collectors but I could not find any relevant methods.

推荐答案

另一种有点奇特的方式做到这一点是使用面向方面的技术，仪器类（ES）有问题的构造函数（S）。看看 AspectJ的，例如。

Another somewhat exotic way to do it would be to use aspect-oriented techniques to instrument the constructor(s) of the class(es) in question. Take a look at AspectJ, for example.