GC Plan

gistfile1.txt

== Complete basic mem_sys API ==

* Fix finalizers.
** Abstract Ruby finalizer API and their state mgmt from mem_sys API.
** Implement dummy finalizers in malloc allocator.

== Create basic performance test tools/framework ==

* Time
* Space
* Pathological cases
* Fork/COW cases
* Native .vs. green threads?

== Support sized allocations ==

* Provide ruby_value_type and size-specific version of rb_newobj(): rb_newobj_(enum ruby_value_type type, size_t size).
* Use rb_newobj_(type, size) in MRI *.c files.
* Reimplement rb_newobj_core() as rb_newobj_core_(type, size).

== Interface SMAL to mem_sys ==

* Create mark/free funcs for each ruby_value_type.
* Implement SMAL rb_newobj_smal_(type, size).
* Connect smal_finalizers to mem_sys.

== Floats and other boxed Numerics are highly likely to be transient and unchanging ==

* Add mem_sys api for floats.
* Use mem_sys api method for rb_float_new(double d).
* Connect SMAL to rb_float_new(double d).
* Consider Float instance caching?  Do we need GC phase callbacks?

== Add GC phase callbacks to core allocator? ==

* Add smal_weak_reference interface to mem_sys API.