Now I'm not sure if this is official, but I was digging around the JDK8 code and found a neat additional method in sun.reflect.Reflection. The old getCallerClass(int) method has been deprecated, but instead, there's a getCallerClass() method that effectively does the same thing as getCallerClass(2). This method is documented as ignoring any reflective method calls in the stack. It delegates to a native method call (JVM_GetCallerClass(JNIEnv*, int)) which appears to still be OpenJDK-specific.
Anyway, this brings up an interesting use-case of the old getCallerClass(int) method. From what I've seen in various places in the source code, getCallerClass(int) is almost always (if not always) called with the value of "2". Thus, what I'd propose is to introduce a getCallerClass() method that defaults to the usual stack depth. I'd prefer to see this sort of helper class in log4j-api instead of duplicating this functionality in at least 2 or 3 separate locations as it is now. -- Matt Sicker <boa...@gmail.com>
