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gh-131525: Cache the result of tuple_hash (#131529)

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* gh-131525: Cache the result of tuple_hash

* Fix debug builds

* Add blurb

* Fix formatting

* Pre-compute empty tuple singleton

* Mostly set the cache within tuple_alloc

* Fixes for TSAN

* Pre-compute empty tuple singleton

* Fix for 32-bit platforms

* Assert that op != NULL in _PyTuple_RESET_HASH_CACHE

* Use FT_ATOMIC_STORE_SSIZE_RELAXED macro

* Update Include/internal/pycore_tuple.h

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

* Fix alignment

* atomic load

* Update Objects/tupleobject.c

Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

---------

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>
This commit is contained in:
Michael Droettboom 2025-03-27 09:57:06 -04:00 • committed by GitHub
parent cf5e438c02
commit 8614f86b71
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GPG key ID: B5690EEEBB952194
102 changed files with 1218 additions and 183 deletions
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8
Lib/test/test_sys.py
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@ -1655,7 +1655,7 @@ class C(object): pass
# float
check(float(0), size('d'))
# sys.floatinfo
check(sys.float_info, vsize('') + self.P * len(sys.float_info))
check(sys.float_info, self.P + vsize('') + self.P * len(sys.float_info))
# frame
def func():
return sys._getframe()
@ -1763,8 +1763,8 @@ def delx(self): del self.__x
# super
check(super(int), size('3P'))
# tuple
check((), vsize(''))
check((1,2,3), vsize('') + 3*self.P)
check((), vsize('') + self.P)
check((1,2,3), vsize('') + self.P + 3*self.P)
# type
# static type: PyTypeObject
fmt = 'P2nPI13Pl4Pn9Pn12PIPc'
@ -1886,7 +1886,7 @@ def test_pythontypes(self):
# XXX
# sys.flags
# FIXME: The +1 will not be necessary once gh-122575 is fixed
check(sys.flags, vsize('') + self.P * (1 + len(sys.flags)))
check(sys.flags, vsize('') + self.P + self.P * (1 + len(sys.flags)))
def test_asyncgen_hooks(self):
old = sys.get_asyncgen_hooks()