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[3.14] GH-148726: Forward-port generational GC #148720

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Merged
hugovk merged 19 commits into from
Apr 26, 2026
+5,582 −6,096
Merged

[3.14] GH-148726: Forward-port generational GC #148720

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1d75f5d
Forward-port generational GC.
sergey-miryanov Apr 18, 2026
00a7baa
Update gc.rst
sergey-miryanov Apr 18, 2026
14547a0
Update InternalDocs/garbge_collector.md
sergey-miryanov Apr 18, 2026
e989c16
Fix tests, typos, add news entry
sergey-miryanov Apr 18, 2026
bfc44ab
Recheck and remove self notes
sergey-miryanov Apr 18, 2026
dbd944e
Remove vestigial comment about "old space bit'.
nascheme Apr 19, 2026
9c22083
Remove reference to "incremental GC".
nascheme Apr 19, 2026
b50da36
Revert to 3.13 limits for these tests.
nascheme Apr 19, 2026
8153914
Add notes about untrack_dicts() change.
nascheme Apr 19, 2026
e8035ec
Merge branch '3.14' into feat/gc-gen-3.14
sergey-miryanov Apr 19, 2026
3cba502
Use PyErr_FormatUnraisable
sergey-miryanov Apr 20, 2026
a9a948f
Remove _GCPhase
sergey-miryanov Apr 24, 2026
ed6ab86
Merge branch '3.14' into feat/gc-gen-3.14
nascheme Apr 24, 2026
a6fd7cc
Merge branch '3.14' into feat/gc-gen-3.14
nascheme Apr 24, 2026
39e803e
Update ABI dump
hugovk Apr 25, 2026
3e1f41b
Update Misc/NEWS.d/next/Core_and_Builtins/2026-04-17-11-30-00.gh-issu…
sergey-miryanov Apr 25, 2026
f4deba6
Update gc.rst
sergey-miryanov Apr 25, 2026
89622fb
More fixes for gc.rst
sergey-miryanov Apr 25, 2026
ba7443e
Update Doc/library/gc.rst
sergey-miryanov Apr 26, 2026
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Remove reference to "incremental GC".
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@nascheme @sergey-miryanov
nascheme authored and sergey-miryanov committed Apr 19, 2026
commit 9c2208314040aa04070731f0902d4aa19a9ca80a
4 changes: 2 additions & 2 deletions InternalDocs/garbage_collector.md
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Expand Up @@ -373,8 +373,8 @@ it will be moved to the last generation (generation 2) where it will be
surveyed the least often.

> [!NOTE]
> The GC implementation for the free-threaded build does not use incremental collection.
> Every collection operates on the entire heap.
> The GC implementation for the free-threaded build does not use generational
> collection. Every collection operates on the entire heap.


In order to decide when to run, the collector keeps track of the number of object
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