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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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102 changed files with 1218 additions and 183 deletions
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2
Include/internal/pycore_runtime_init.h
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@ -27,6 +27,7 @@ extern "C" {
#include "pycore_runtime_init_generated.h" // _Py_bytes_characters_INIT
#include "pycore_signal.h" // _signals_RUNTIME_INIT
#include "pycore_tracemalloc.h" // _tracemalloc_runtime_state_INIT
#include "pycore_tuple.h" // _PyTuple_HASH_EMPTY
extern PyTypeObject _PyExc_MemoryError;
@ -106,6 +107,7 @@ extern PyTypeObject _PyExc_MemoryError;
}, \
.tuple_empty = { \
.ob_base = _PyVarObject_HEAD_INIT(&PyTuple_Type, 0), \
.ob_hash = _PyTuple_HASH_EMPTY, \
}, \
.hamt_bitmap_node_empty = { \
.ob_base = _PyVarObject_HEAD_INIT(&_PyHamt_BitmapNode_Type, 0), \