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[DIFF] Immutability for 3.15a - #63

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mjp41 wants to merge 83 commits into

immutable-basefrom

immutable-main

Commits on Nov 26, 2025
- Proposed code changes for [PEP XXX](link).
  
  Matthew A Johnson
  authored and
  mjp41
  committed
  5a3b525
- Add Debug trace for where something was frozen.
  mjp41
  committed
  5e8f428
- Disable Test Decimal for now
  mjp41
  committed
  78374f9
- Add backtracking
  mjp41
  committed
  1bb7711
- Refactor
  mjp41
  committed
  870f10e
- More refactorings
  mjp41
  committed
  c78046e
- More refactorings
  mjp41
  committed
  7034fb9
- fixup
  mjp41
  committed
  6ef19fa
- CI
  mjp41
  committed
  cab7dd8
- CI
  mjp41
  committed
  9decd2d
- Fix bug from bad interaction with incremental GC.
  mjp41
  committed
  c9ecaff
Commits on Dec 17, 2025
- Changes made in sprint for PLDI deadline. (#62)
  
  mjp41
  and
  xFrednet
  authored
  aa72f83
Commits on Jan 15, 2026
- Create a Python surface to the ImmutableModule
  mjp41
  committed
  e4df334
Commits on Mar 2, 2026
Commits on Mar 3, 2026
- Make CI run for *-main (#70)
  mjp41
  authored
  be3a542
- Handle immutable symbols. (#72)
  mjp41
  authored
  47e7c4b
Commits on Mar 4, 2026
- Adding tp_reachable (#65)
  
  mjp41
  and
  xFrednet
  authored
  3f5bf95
- Immutable modules: Fix proxy mode breaking tests
  xFrednet
  committed
  0165c58
- Only run `test_ctypes` if ctypes are available
  xFrednet
  committed
  6c05a4e
- Immutability: Add module proxy mode tests
  xFrednet
  committed
  30d240f
- Merge pull request #71 from mjp41/immutable-proxy-modules
  xFrednet
  authored
  e713de1
- Missing clean up code (#73)
  mjp41
  authored
  f1f954b
Commits on Mar 5, 2026
- Add "can be viewed as immutable" query to the immutability system (#74)
  mjp41
  authored
  d0aeee0
Commits on Mar 6, 2026
- Add set_freezable() for per-object freeze policy (#77)
  
  mjp41
  and
  xFrednet
  authored
  e1c6249
- Fix freeze rollback to unfreeze completed SCCs on error
  mjp41
  committed
  262d06c
- Make freeze take multiple arguments
  mjp41
  committed
  dac0a51
- CI complaints
  mjp41
  committed
  085047e
- Make freeze return the first argument it is supplied.
  mjp41
  committed
  01b6597
- Add tests freeze return first argument
  mjp41
  committed
  32a1390
Commits on Mar 11, 2026
- Merge pull request #78 from fxpl/immutable-rollback
  xFrednet
  authored
  00b1bb5
- Immutability: Use ob_refcnt instead of ob_refcnt_full
  kulisak12
  committed
  b6378e0
- Immutability: Make weakref operations thread-safe
  kulisak12
  committed
  24a9eb3
- Immutability: Reference counting for weakrefs
  kulisak12
  committed
  d647ae7
Commits on Mar 12, 2026
- .gitignore should only ignore the root /build directory
  xFrednet
  committed
  d1ed4df
- Remove register freezable (#80)
  mjp41
  authored
  b44b98b
- Immutability: Call weakref callbacks
  kulisak12
  committed
  7f3f531
Commits on Mar 13, 2026
- Immutability: More weakref tests
  kulisak12
  committed
  af07e74
- Immutability: Run weakref callbacks directly if possible
  kulisak12
  committed
  67342ff
- Immutability: Clear weakrefs in two steps
  kulisak12
  committed
  3b50ca9
- Immutability: Catch tp_traverse missing types
  xFrednet
  committed
  9025a92
- Merge pull request #75 from kulisak12/immutable-weakrefs
  xFrednet
  authored
  5c182a6
- Define `Py_tp_reachable` for heap types in CPython
  xFrednet
  committed
  55a2699
- Generalize `tp_reachable`
  xFrednet
  committed
  1a6d2cf
Commits on Mar 14, 2026
- Add last reachables and improving CI (Still broken though)
  xFrednet
  committed
  607e295
- Merge pull request #84 from fxpl/immutable-more-reachable
  xFrednet
  authored
  2f98900
Commits on Mar 15, 2026
- Set `tp_reachable` for Python classes
  xFrednet
  committed
  f764719
- Merge pull request #83 from fxpl/fix-heap-type-cycles
  xFrednet
  authored
  86f894f
- Correct Segfault introduced by #83
  xFrednet
  committed
  2ab8994
- Merge pull request #86 from fxpl/immutable-segfault-fix-83
  xFrednet
  authored
  b6c7df3
- Immutability: Clear collecting flag during freezing
  xFrednet
  committed
  cd9415a
- Immutability: Basic Pre-freeze infrastructure
  xFrednet
  committed
  d67f752
- Ensure that the pre-freeze hook only runs once
  xFrednet
  committed
  f7937c0
- pre-freeze: Error on nested calls for MVP
  xFrednet
  committed
  f3da03a
- Extract undo_freeze
  xFrednet
  committed
  0015ec3
- Treat freezing as transactions to support nested calls
  xFrednet
  committed
  cfa4210
- Fix `IMMUTABLE_TRACING` UB and ASAN errors
  xFrednet
  committed
  4bb1d80
- Pre-freeze: Add tests and fix bug
  xFrednet
  committed
  28bb471
- Merge pull request #76 from fxpl/immutable-freeze-hook
  xFrednet
  authored
  a9c05fa
- Alias `isfrozen` to `is_frozen`
  xFrednet
  committed
  6b88aa9
- Remove `_PyImmutability_RegisterFreezable` in favour of `set_freezable`
  xFrednet
  committed
  6f541fa
- Remove `NotFreezable` type
  xFrednet
  committed
  6bcd48f
- Remove `is_freezable_builtin` in favour of `set_freezable`
  xFrednet
  committed
  9052028
- Immutability: More cleanup
  xFrednet
  committed
  557daed
- sudo `CI=green`
  xFrednet
  committed
  d31e561
Commits on Mar 16, 2026
Commits on Mar 17, 2026
- Add get_freezable, unset_freezable, and FreezabilityOverride context … (#89)
  mjp41
  authored
  d4f8054
- Add artifact markers to parts of the implementation
  xFrednet
  committed
  be00d82
- Add missing tp_reachable
  xFrednet
  committed
  c9132fd
- Allow the Proxy freezability
  xFrednet
  committed
  2c90688
- Merge pull request #91 from fxpl/immutable-artifact-markers
  xFrednet
  authored
  d5b515f
- Adjusting _Py_FREEZABLE_PROXY (#92)
  xFrednet
  authored
  dae95ca
Commits on Apr 2, 2026
- Support frozen sys module in _bootstrap (#96)
  xFrednet
  authored
  b65259d
Commits on Jul 14, 2026
- Fix freeze rollback for incomplete SCCs
  
  mjp41
  and
  Copilot
  committed
  425066c
Commits on Sep 7, 2026
- Immutability: Fix interpreters serializing immutable function objects
  xFrednet
  committed
  030b94c
- Immutability: Fix bug in shallow immutability check
  xFrednet
  committed
  b8dee64
- Remove get_next.
  mjp41
  committed
  a7dad92
- Merge pull request #110 from fxpl/immutable-minor-fixes
  xFrednet
  authored
  48ae3f6
- Merge pull request #107 from fxpl/immutable_rollback
  xFrednet
  authored
  783ab0d

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Commits on Mar 14, 2026

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Commits on Mar 17, 2026

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Commits on Sep 7, 2026