Local Garbage Collection (LGC)

In the Heap Hierarchy, leaf heaps (and nearby ancestors, generally deep in the hierarchy) are subjected to a hybrid copying/in-place collection algorithm called Local Garbage Collection, or LGC for short. The algorithm is hybrid in the sense that certain “pinned” objects are kept in-place but all other live objects are forwarded (copied) into fresh heaps. The forwarding component of the algorithm is an adaptation of Cheney’s classic algorithm.

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