This commit adds finalizers to the custom allocator. Compared to the
existing solution:
* The finalizer queue is replaced by an AtomicStack<ExtraObjectData>.
* All objects with finalizers get meta objects attached. This was not
previously the case for CleanerImpl, but is now needed to link objects
together in the finalization queue.
* The finalizer queue is built during SweepExtraObjects, instead of
during regular sweeping.
* Cleaners are executed by the finalizer thread, and no longer by a
separate worker thread.
Co-authored-by: Troels Lund <troels@google.com>
Merge-request: KOTLIN-MR-592
Merged-by: Alexander Shabalin <alexander.shabalin@jetbrains.com>
Troels Bjerre Lund
7854b01473