denverj的专栏

 Reference Counting Collectors Reference counting was an early garbage collection strategy. In this approach, a reference count is maintained for each object on the heap. When an object is...

 Tracing CollectorsTracing garbage collectors trace out the graph of object references starting with the root nodes. Objects that are encountered during the trace are marked in some way. M...

Compacting CollectorsGarbage collectors of Java Virtual Machines will likely have a strategy to combat heap fragmentation. Two strategies commonly used by mark and sweep collectors are co...

 Copying CollectorsCopying garbage collectors move all live objects to a new area. As the objects are moved to the new area, they are placed side by side, thus eliminating any free space t...

 Generational CollectorsOne disadvantage of simple stop and copy collectors is that all live objects must be copied at every collection. This facet of copying algorithms can be improved up...