Call a function when any method from a class is called ?

Hi all,
I have a class (called MyClass), that contains about 20 misc methods, and a logging method. I want to call the logging method each time any method in that class is called, so for now, my code looks like:

class MyClass {    void log()    {      // log stuff    }    void method1()    {       this.log();       //do stuff 1    }    void method2()    {       this.log();       //do stuff 2    }      // ... 18 other methods that also call this.log() }

This works fine, but it's a bit painful to have to call log() in each method, and the risk is high that if someone adds a method in there, he will forget to call it.
Is there any way I could attach an event or something, so that whenever a method from that class is called, my log() function is called ?
Any idea appreciated
Thanks,
Thibaut