AS3 - Can I have access to the object (or function) who call me?

Answer 1

"Unlike previous versions of ActionScript, ActionScript 3.0 has no arguments.caller property. To get a reference to the function that called the current function, you must pass a reference to that function as an argument."

From http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/arguments.html

That's the only way you can do that, otherwise you'll need to make a global variable to tell what function is calling C

Answer 2

Sure it can be done. You can do something like

private function C():void
{
  var e:Error = new Error();
  var stack:String = e.getStackTrace();
  //analyze stack and find out which function called it.
}

this is ugly but it would work.