Concurrent copying & compaction
In this chapter we discuss approaches to defragmenting the heap concurrently with the mutator, relocating live objects either by concurrent copying or by concurrent compaction. Here we consider how the mark-compact approaches of Chapter 3 and the copying approaches of Chapter 4 extend to operate concurrently with the mutator.
We focus initially on collection techniques based on copying (evacuating or scavenging) reachable objects out of a fromspace into a tospace, after which the fromspace can be reclaimed. Recall that when scanning object fields the collector must convert all fromspace pointers to tospace pointers, replacing each fromspace pointer with the forwarding address of its fromspace target, ...
Get The Garbage Collection Handbook now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
