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gh-158195: Do not hold the type lock during stop-the-world - #159972

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nascheme wants to merge 15 commits into

python:mainfrom

nascheme:gh-158195-unpin-type-lock

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gh-158195: Do not hold the type lock during stop-the-world#159972
nascheme wants to merge 15 commits into
python:mainfrom
nascheme:gh-158195-unpin-type-lock

Commits on Oct 21, 2026
- gh-158195: Do not hold the type lock during stop-the-world
  nascheme
  committed
  672c9a1
- Replace int pointer with int and bool option.
  nascheme
  committed
  45823fa
- Strengthen type-lock regression tests and reduce their cost
  nascheme
  committed
  1951c50
- Enable deferred refcounting only on the stored MRO
  nascheme
  committed
  167ed18
- Store a private copy of the assigned __bases__ tuple
  nascheme
  committed
  be1b1fd
- Invalidate type version tags before dropping queue references
  nascheme
  committed
  8ca6ee8
- Cleanup try_set_tp_bases() and try_set_tp_mro()
  nascheme
  committed
  5f92ab0
- Correct the comment on type_validate_new_bases()
  nascheme
  committed
  7917d6a
- Minor comments cleanup, reduce.
  nascheme
  committed
  2aca6d5
- Merge remote-tracking branch 'origin/main' into gh-158195-unpin-type-lock
  nascheme
  committed
  c7ac4e7
Commits on Oct 23, 2026
- Avoid looping if mro() assigns a slot.
  nascheme
  committed
  8b8a87c
Commits on Oct 24, 2026
- Copy str subclass keys of the class namespace to exact str.
  nascheme
  committed
  04afc4d
Commits on Oct 27, 2026
- Do type slot and __bases__ updates in a single stop-the-world.
  nascheme
  committed
  8770238
Commits on Oct 28, 2026
- Merge remote-tracking branch 'origin/main' into gh-158195-unpin-type-lock
  nascheme
  committed
  5687320
- Merge remote-tracking branch 'origin/main' into gh-158195-unpin-type-lock
  nascheme
  committed
  b5fab45