Patent US 8,200,718

A method for garbage collection in which resources used by data objects in a computer program that are not accessed in the future are reclaimed, the method consists of the following steps of 1. Providing a tracing garbage collector which is both parallelized and incremental; 2. Integrating the collector with the computer program to create the mutator; 3. Instructing the mutator to scan and collect resources used by data objects in a computer program that are not accessed in the future simultaneously on all threads in small amounts; and 4. Interleaving the mutator scanning and collection with unrelated processing by the computer program such that all of the threads in the application are never stopped simultaneously for any portion of the collection cycle.