Refactor reference queues.
Refactored the reference queue processing to reside in the heap code.
This removes significant code duplication in the semispace and
marksweep garbage collectors.
Changed the soft reference behaviour to preserve all soft references
unless the GC requires them to be cleared to avoid an out of memory
error. It may be worth investigating a better heuristic in the
future to preserve soft references by LRU order.
Change-Id: I1f3ff5bd4b3c5149271f4bb4fc94ba199e2f9bc2
9 files changed
