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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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6
Objects/clinic/codeobject.c.h generated
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@ -183,9 +183,11 @@ code_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
static struct {
PyGC_Head _this_is_not_used;
PyObject_VAR_HEAD
Py_hash_t ob_hash;
PyObject *ob_item[NUM_KEYWORDS];
} _kwtuple = {
.ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
.ob_hash = -1,
.ob_item = { &_Py_ID(co_argcount), &_Py_ID(co_posonlyargcount), &_Py_ID(co_kwonlyargcount), &_Py_ID(co_nlocals), &_Py_ID(co_stacksize), &_Py_ID(co_flags), &_Py_ID(co_firstlineno), &_Py_ID(co_code), &_Py_ID(co_consts), &_Py_ID(co_names), &_Py_ID(co_varnames), &_Py_ID(co_freevars), &_Py_ID(co_cellvars), &_Py_ID(co_filename), &_Py_ID(co_name), &_Py_ID(co_qualname), &_Py_ID(co_linetable), &_Py_ID(co_exceptiontable), },
};
#undef NUM_KEYWORDS
@ -430,9 +432,11 @@ code__varname_from_oparg(PyObject *self, PyObject *const *args, Py_ssize_t nargs
static struct {
PyGC_Head _this_is_not_used;
PyObject_VAR_HEAD
Py_hash_t ob_hash;
PyObject *ob_item[NUM_KEYWORDS];
} _kwtuple = {
.ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
.ob_hash = -1,
.ob_item = { &_Py_ID(oparg), },
};
#undef NUM_KEYWORDS
@ -466,4 +470,4 @@ code__varname_from_oparg(PyObject *self, PyObject *const *args, Py_ssize_t nargs
exit:
return return_value;
}
/*[clinic end generated code: output=73861c79e93aaee5 input=a9049054013a1b77]*/
/*[clinic end generated code: output=c5c6e40fc357defe input=a9049054013a1b77]*/