Apparatus, methods, systems and computer program products are disclosed describing a data structure and associated processes that optimize garbage collection. The invention sections a card vector associated with a card marked heap into portions. Each portion can be individually write protected. A section...http://www.google.com.tw/patents/US6049810?utm_source=gb-gplus-share專利 US6049810 - Method and apparatus for implementing a write barrier of a garbage collected heap
