Commit Graph

6 Commits

Author SHA1 Message Date
Sam Gross 5716cc3529
gh-100240: Use a consistent implementation for freelists (#121934)
This combines and updates our freelist handling to use a consistent
implementation. Objects in the freelist are linked together using the
first word of memory block.

If configured with freelists disabled, these operations are essentially
no-ops.
2024-07-22 12:08:27 -04:00
Donghee Na 321d13fd2b
gh-111968: Split _Py_dictkeys_freelist out of _Py_dict_freelist (gh-115505) 2024-02-16 01:01:36 +00:00
Donghee Na f15795c9a0
gh-111968: Rename freelist related struct names to Eric's suggestion (gh-115329) 2024-02-14 00:32:51 +00:00
Sam Gross a3af3cb4f4
gh-110481: Implement inter-thread queue for biased reference counting (#114824)
Biased reference counting maintains two refcount fields in each object:
`ob_ref_local` and `ob_ref_shared`. The true refcount is the sum of these two
fields. In some cases, when refcounting operations are split across threads,
the ob_ref_shared field can be negative (although the total refcount must be
at least zero). In this case, the thread that decremented the refcount
requests that the owning thread give up ownership and merge the refcount
fields.
2024-02-09 17:08:32 -05:00
Donghee Na 699779256e
gh-111968: Unify freelist naming schema to Eric's suggestion (gh-114581) 2024-01-27 00:25:16 +09:00
Sam Gross b52fc70d1a
gh-112529: Implement GC for free-threaded builds (#114262)
* gh-112529: Implement GC for free-threaded builds

This implements a mark and sweep GC for the free-threaded builds of
CPython. The implementation relies on mimalloc to find GC tracked
objects (i.e., "containers").
2024-01-25 10:27:36 -08:00