I'd like to propose that we get rid of the CollectorPolicy classes.

The CollectorPolicy classes contains a mix of features to support the CollectedHeaps. A few of them are:

* Have virtual functions that either CMS or Serial can override. This was important when CMS didn't have it's own CollectedHeap. But CMSHeap was recently added, so this isn't needed anymore.

* Has common allocation code for CMS and Serial. Can be moved to GenCollectedHeap.

* Deal with parts of the heap sizing and corresponding flags. A lot of the flag handling has been moved to the GCArguments classes. We should move the CollectorPolicy flag handling functions there as well.

* Keeps the state for the SoftRefPolicy. Separate this out to it's own class.

* Has the satisfy_failed_metadata_allocation function. No need to be located in CollectorPolicy.

I'm working on a prototype to show what this would look like. This is a full webrev of the code, to see what the end goal could look like. However, I think this should be fixed incrementally and not as a big gigantic patch, if possible:

http://cr.openjdk.java.net/~stefank/prototype/removeCollectorPolicy/webrev.01/