Does the JVM's automatic Garbage Collector cleans entire JVM HotSpot memory (C-Heap, Java Heap and Permanent Generation space) or just Java Heap?

I know that the JVM has some JVM HotSpot memory which is further divided into three areas:

• Java Heap


• Permanent Generation Space


• Native Heap (C-Heap)

I know that Java has automatic garbage collection mechanism for Heap Memory.

So, I want to confirm that in my last statement Heap refers to both Java Heap and Native Heap (C-Heap) or just Java Heap.

Also, what about Permanent Generation Space? Is it also considered as some kind of Heap or what?