tree b0fe6e048631991cd8842a9b4a374c3d843c2e83
parent ad435ebd9d011eef66ef77e96b065024220c10ad
author Mathieu Chartier <mathieuc@google.com> 1384302485 -0800
committer Mathieu Chartier <mathieuc@google.com> 1384540739 -0800

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