Our Framework

Our framework retains all the benefits and flexibilities of CMM, while extending it in several minor but useful ways:

• Like CMM, interior pointers(i.e. pointers to the middle of an object) and crossheap pointers (i.e. complex data structures linking nodes locating in multiple logical heaps.) are supported. Pointers to collectable objects are non-intrusive: i.e. they are normal C++ pointers and not encapsulated in templates.
• Also like CMM, we allow multiple garbage collectors using different algorithms to coexist. Unlike CMM, however, we allow multiple Bartlett-style collectors to be instantiated. Most of the services involving low level page management and object marking have been relegated to a separate heap manager.
• We provide support for finalization and weakpointers.
• We have implemented blacklisting[Boe93] to reduce the chance of false roots identification.