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T. Wouters 684e7af8cd
[3.13] gh-142183: Cache one datachunk per tstate to prevent alloc/dealloc thrashing (GH-145789) (#146123) 
* gh-142183: Cache one datachunk per tstate to prevent alloc/dealloc thrashing (GH-145789) (#145828)

Cache one datachunk per tstate to prevent alloc/dealloc thrashing when repeatedly hitting the same call depth at exactly the wrong boundary.

Move new _ts member to the end to not mess up remote debuggers' ideas of the
struct's layout. (The struct is only created by the runtime, and the new
field only used by the runtime, so it should be safe.)

(cherry picked from commit 706fd4ec08)
(cherry picked from commit 19cbcc0f85)
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
2026-03-24 02:27:57 +01:00
..
clinic [3.13] gh-139748: fix leaks in AC error paths when using unicode FS-b… (#139792) 2025-10-08 22:21:49 +05:30
frozen_modules gh-97669: Create Tools/build/ directory (#97963) 2022-10-17 12:01:00 +02:00
_warnings.c [3.13] gh-139640: Fix swallowing syntax warnings in different modules (GH-139755) (GH-140119) 2025-10-14 15:46:11 +00:00
adaptive.md GH-98686: Get rid of "adaptive" and "quick" instructions (GH-99182) 2022-11-09 10:50:09 -08:00
asdl.c bpo-43244: Remove ast.h, asdl.h, Python-ast.h headers (GH-24933) 2021-03-23 20:47:40 +01:00
asm_trampoline.S [3.13] gh-136541: Fix several problems of perf trampolines in x86_64 and aarch64 (GH-136500) (#136545) 2025-07-11 14:02:19 +00:00
assemble.c [3.13] gh-130775: Allow negative locations in ast (GH-130795) (#132243) 2025-04-08 10:47:24 +02:00
ast.c gh-116126: Implement PEP 696 (#116129) 2024-05-03 06:17:32 -07:00
ast_opt.c [3.13] gh-123344: Add missing ast optimizations for PEP 696 (GH-123377) (#123427) 2024-08-28 14:02:34 +00:00
ast_unparse.c [3.13] gh-125268: Use static string for "1e309" in AST (GH-125272) (GH-125280) 2024-10-24 13:59:23 -04:00
bltinmodule.c [3.13] gh-139748: fix leaks in AC error paths when using unicode FS-b… (#139792) 2025-10-08 22:21:49 +05:30
bootstrap_hash.c gh-110014: Fix bootstrap_hash.c: remove debug code (#110161) 2023-09-30 22:21:20 +00:00
brc.c gh-110481: Fix biased reference counting queue initialization. (#117271) 2024-03-28 09:28:39 -04:00
bytecodes.c [3.13] gh-145008: Maintain stack consistency in CALL_BOUND_METHOD_EXACT_ARGS (GH-145015) 2026-03-03 04:09:02 +08:00
ceval.c [3.13] gh-146092: Handle _PyFrame_GetFrameObject() failures properly (GH-146124) (GH-146132) (#146138) 2026-03-18 21:23:26 +01:00
ceval_gil.c [3.13] gh-87135: Hang non-main threads that attempt to acquire the GIL during finalization (GH-105805) (GH-137827) 2025-08-17 09:08:14 -07:00
ceval_macros.h [3.13] gh-117657: Avoid race in PAUSE_ADAPTIVE_COUNTER in free-threaded build (GH-122190) (#122475) 2024-07-30 18:18:25 +00:00
codecs.c [3.13] gh-58124: Avoid CP_UTF8 in UnicodeDecodeError (GH-137415) (#137461) 2025-08-06 12:59:11 +00:00
compile.c [3.13] gh-139640: Fix swallowing syntax warnings in different modules (GH-139755) (GH-140119) 2025-10-14 15:46:11 +00:00
condvar.h gh-104530: Enable native Win32 condition variables by default (GH-104531) 2024-02-02 13:50:51 +00:00
config_common.h gh-76785: Add PyInterpreterConfig Helpers (gh-117170) 2024-04-02 20:35:52 +00:00
context.c [3.13] gh-142873: Do not check for PyContextVar_CheckExact twice in PyContextVar_Set (GH-142874) (#142894) 2025-12-17 17:04:39 +00:00
critical_section.c [3.13] gh-119344: Make critical section API public (GH-119353) (#120856) 2024-06-21 20:20:41 +00:00
crossinterp.c [3.13] gh-140306: Clear uncaught exception info after applying error in subinterpreter (GH-140397) 2026-01-12 18:19:57 +02:00
crossinterp_data_lookup.h gh-76785: Improved Subinterpreters Compatibility with 3.12 (gh-115424) 2024-02-13 14:56:49 -07:00
crossinterp_exceptions.h [3.13] gh-117398: Use Per-Interpreter State for the _datetime Static Types (gh-120009) 2024-06-03 23:37:28 +00:00
dtoa.c gh-91565: Replace bugs.python.org links with Devguide/GitHub ones (GH-91568) 2024-04-01 13:02:07 +00:00
dup2.c gh-108765: Python.h no longer includes <unistd.h> (#108783) 2023-09-02 16:50:18 +02:00
dynamic_annotations.c bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748) 2017-12-12 13:55:04 +02:00
dynload_hpux.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
dynload_shlib.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
dynload_stub.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
dynload_win.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
emscripten_signal.c GH-108614: Unbreak emscripten build (GH-109132) 2023-09-08 17:54:45 +01:00
emscripten_trampoline.c [3.13] gh-121698 Emscripten: Use updated WebAssembly type reflection proposal (GH-121699) (GH-121745) 2024-07-14 12:01:03 +02:00
errors.c [3.13] gh-143547: Fix PyErr_FormatUnraisable() fallback (GH-143557) (GH-143603) (#143612) 2026-01-09 15:33:25 +00:00
executor_cases.c.h [3.13] gh-132744: Check recursion limit in _PY_FRAME_GENERAL (GH-132746) (GH-138032) 2025-08-22 20:25:24 +08:00
fileutils.c [3.13] gh-124476: Fix decoding from the locale encoding in the C.UTF-8 locale (GH-132477) (ПР-132528) 2025-04-14 18:59:07 +00:00
flowgraph.c [3.13] gh-130740: Move some stdbool.h includes after Python.h (#130738) (#130756) 2025-03-03 13:09:59 +01:00
formatter_unicode.c gh-92536: Remove PyUnicode_READY() calls (#105210) 2023-06-02 01:33:17 +02:00
frame.c gh-118272: set stacktop to 0 before freeing contents, to avoid access to invalid objects during GC (#118478) 2024-05-01 21:51:40 +01:00
frozen.c gh-108716: Cleanup remaining deepfreeze infrastructure (#116919) 2024-03-18 11:13:11 -07:00
frozenmain.c gh-105716: Fix _PyInterpreterState_IsRunningMain() For Embedders (gh-117140) 2024-03-21 18:20:20 -06:00
future.c [3.13] gh-126139: Improve error message location for future statement with unknown feature (GH-126140) (#126155) 2024-10-30 00:36:06 +00:00
gc.c [3.13] GH-91636: Clear weakrefs created by finalizers. (GH-136401) (GH-144214) 2026-03-24 00:50:41 +01:00
gc_free_threading.c [3.13] GH-91636: Clear weakrefs created by finalizers. (GH-136401) (GH-144214) 2026-03-24 00:50:41 +01:00
gc_gil.c gh-111968: Rename freelist related struct names to Eric's suggestion (gh-115329) 2024-02-14 00:32:51 +00:00
generated_cases.c.h [3.13] gh-145008: Maintain stack consistency in CALL_BOUND_METHOD_EXACT_ARGS (GH-145015) 2026-03-03 04:09:02 +08:00
getargs.c [3.13] gh-118814: Fix the TypeVar constructor when name is passed by keyword (GH-122664) (GH-122806) 2024-08-08 09:49:21 +03:00
getcompiler.c closes bpo-43278: remove unnecessary leading '\n' from COMPILER when build with GCC/Clang (GH-24606) 2021-02-25 20:24:21 -08:00
getcopyright.c Update copyright years to 2024. (GH-113608) 2024-01-16 21:54:05 +01:00
getopt.c gh-110079: Remove extern "C" { ...} in C code (#110080) 2023-09-29 10:56:49 +02:00
getplatform.c bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
getversion.c [3.13] gh-119132: Update sys.version to identify free-threaded or not. (gh-119134) (#119153) 2024-05-18 16:49:11 -04:00
hamt.c [3.13] gh-142829: Fix use-after-free in Context.__eq__ via re-entrant ContextVar.set (GH-142905) (GH-143871) 2026-01-15 15:00:44 +00:00
hashtable.c gh-111545: Add Py_HashPointer() function (#112096) 2023-12-06 15:09:22 +01:00
import.c [3.13] gh-144601: Avoid sharing exception objects raised in a PyInit function across multiple interpreters (GH-144602) (GH-144880) 2026-02-16 16:05:55 +00:00
importdl.c [3.13] gh-140011: Delete importdl assertion that prevents importing embedded modules from packages (GH-141605) (#141987) 2025-11-28 23:31:11 -08:00
initconfig.c [3.13] gh-145990: sort --help-env first section by name (others and xoptions already sorted) (GH-146003) 2026-03-15 22:35:53 +00:00
instruction_sequence.c [3.13] gh-130740: Move some stdbool.h includes after Python.h (#130738) (#130756) 2025-03-03 13:09:59 +01:00
instrumentation.c [3.13] gh-120158: Fix inconsistent monitoring state when setting events too frequently (gh-141845) (gh-141880) 2025-11-23 15:30:37 +00:00
interpconfig.c gh-76785: Fix a Refleak in _interpreters.new_config() (gh-117491) 2024-04-03 01:10:26 +00:00
intrinsics.c [3.13] gh-130163: Fix crashes related to PySys_GetObject() (GH-130503) (GH-130556) 2025-02-25 22:50:26 +00:00
jit.c [3.13] GH-118844: Fix build failures when combining --disable-gil with --enable-experimental-jit (GH-118959) 2024-05-13 04:53:30 +00:00
legacy_tracing.c [3.13] gh-137400: Fix thread-safety issues when profiling all threads (gh-137518) (gh-137733) 2025-10-09 11:42:47 -04:00
lock.c [3.13] gh-135871: Fix needless spinning in _PyMutex_LockTimed with zero timeout (gh-135872) (gh-135947) 2025-06-25 17:09:17 +00:00
marshal.c [3.13] gh-106287: Do not write objects after an unmarshalling error (GH-132715) (GH-143833) 2026-01-14 11:48:52 +00:00
modsupport.c [3.13] gh-132909: handle overflow for 'K' format in do_mkvalue (GH-132911) (#132932) 2025-04-25 12:44:53 +00:00
mysnprintf.c Add a warning message about PyOS_snprintf (#95993) 2022-10-07 11:49:53 -07:00
mystrtoul.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
object_stack.c gh-111968: Split _Py_dictkeys_freelist out of _Py_dict_freelist (gh-115505) 2024-02-16 01:01:36 +00:00
opcode_targets.h GH-118095: Use broader specializations of CALL in tier 1, for better tier 2 support of calls. (GH-118322) 2024-05-04 12:11:11 +01:00
optimizer.c [3.13] gh-120642: Move private PyCode APIs to the internal C API (#120643) (#121043) 2024-06-26 15:35:19 +02:00
optimizer_analysis.c [3.13] gh-120642: Move private PyCode APIs to the internal C API (#120643) (#121043) 2024-06-26 15:35:19 +02:00
optimizer_bytecodes.c [3.13] gh-119258: Backport optimizer frame fixes in GH-119365 (GH-120699) 2024-06-20 23:55:20 +08:00
optimizer_cases.c.h [3.13] gh-132744: Check recursion limit in _PY_FRAME_GENERAL (GH-132746) (GH-138032) 2025-08-22 20:25:24 +08:00
optimizer_symbols.c [3.13] gh-120642: Move private PyCode APIs to the internal C API (#120643) (#121043) 2024-06-26 15:35:19 +02:00
parking_lot.c [3.13] gh-112804: Clamping timeout value for _PySemaphore_PlatformWait (gh-124914) (gh-124991) 2024-10-07 16:53:32 +00:00
pathconfig.c gh-117987: Restore several functions removed in Python 3.13 alpha 1 (GH-117993) 2024-04-18 15:20:38 +02:00
perf_jit_trampoline.c [3.13] gh-144194: Fix mmap failure check in perf_jit_trampoline.c (#143713) (#144304) 2026-01-28 14:15:39 +00:00
perf_trampoline.c [3.13] gh-144766: Fix a crash in fork child process when perf support is enabled. (GH-144795) (#144818) 2026-02-14 17:52:42 +00:00
preconfig.c [3.13] gh-145092: Fix compiler warning for memchr() and wcschr() returning const pointer (GH-145093) (GH-145101) 2026-02-22 08:28:24 +00:00
pyarena.c bpo-43244: Remove the pyarena.h header (GH-25007) 2021-03-24 02:23:01 +01:00
pyctype.c Include files missed in r72044. 2009-04-27 20:54:42 +00:00
pyfpe.c bpo-46315: Add ifdef HAVE_ feature checks for WASI compatibility (GH-30507) 2022-01-13 09:46:04 +01:00
pyhash.c [3.13] gh-111389: Add PyHASH_MULTIPLIER constant (GH-119214) (#119334) 2024-06-04 09:26:25 +02:00
pylifecycle.c [3.13] gh-144307: Fix a reference leak during module teardown (GH-144308) (GH-144328) 2026-01-29 19:18:39 +00:00
pymath.c bpo-45440: Remove pymath.c fallbacks (GH-28977) 2021-10-15 19:45:34 +02:00
pystate.c [3.13] gh-142183: Cache one datachunk per tstate to prevent alloc/dealloc thrashing (GH-145789) (#146123) 2026-03-24 02:27:57 +01:00
pystrcmp.c gh-108767: Replace ctype.h functions with pyctype.h functions (#108772) 2023-09-01 18:36:53 +02:00
pystrhex.c [3.13] gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548) (#142304) 2025-12-05 15:52:12 +00:00
pystrtod.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
Python-ast.c [3.13] gh-144169: Fix three crashes in AST objects with non-str kwargs (GH-144178) (#144260) 2026-01-27 20:37:35 -08:00
Python-tokenize.c [3.13] gh-120317: Lock around global state in the tokenize module (GH-120318) (#121841) 2024-07-16 10:03:47 +00:00
pythonrun.c [3.13] gh-137576: Fix for Basic REPL showing incorrect code in tracebacks with PYTHONSTARTUP (GH-137625) (#137778) 2025-08-15 12:10:39 +03:00
pytime.c gh-110850: Remove _PyTime_TimeUnchecked() function (#118552) 2024-05-05 12:15:19 +02:00
qsbr.c [3.13] GH-133136: Revise QSBR to reduce excess memory held (gh-135473) (gh-136480) 2025-07-30 11:06:44 -07:00
README Issue #18093: Factor out the programs that embed the runtime 2014-07-25 21:52:14 +10:00
specialize.c [3.13] gh-125610: Fix STORE_ATTR_INSTANCE_VALUE specialization check (GH-125612) (GH-127698) 2024-12-06 16:14:26 +00:00
stdlib_module_names.h [3.13] gh-126925: Modify how iOS test results are gathered (GH-127592) (#127754) 2024-12-09 14:39:11 +08:00
structmember.c [3.13] gh-117657: Fix __slots__ thread safety in free-threaded build (GH-119368) (#120655) 2024-06-17 19:12:25 +00:00
suggestions.c gh-113845: Fix a compiler warning in Python/suggestions.c (GH-113949) 2024-01-11 20:31:24 +02:00
symtable.c [3.13] gh-145701: Fix __classdict__ & __conditional_annotations__ in class-scope inlined comprehensions (GH-145702) (#145711) 2026-03-09 14:44:31 -07:00
sysmodule.c [3.13] gh-142571: Check for errors before calling each syscall in PyUnstable_CopyPerfMapFile() (GH-142460) (#142602) 2025-12-11 22:08:08 +00:00
thread.c gh-110850: Cleanup PyTime API: PyTime_t are nanoseconds (#115753) 2024-02-21 11:46:00 +01:00
thread_nt.h [3.13] gh-87135: Hang non-main threads that attempt to acquire the GIL during finalization (GH-105805) (GH-137827) 2025-08-17 09:08:14 -07:00
thread_pthread.h [3.13] gh-87135: Hang non-main threads that attempt to acquire the GIL during finalization (GH-105805) (GH-137827) 2025-08-17 09:08:14 -07:00
thread_pthread_stubs.h GH-110829: Ensure Thread.join() joins the OS thread (#110848) 2023-11-04 13:59:24 +00:00
tier2_engine.md Docs: fix spelling of the word 'transferring' (#116641) 2024-03-13 23:53:32 +01:00
traceback.c [3.13] gh-142737: Handle lost io.open in _Py_FindSourceFile (GH-142747) (GH-142774) 2025-12-15 23:27:15 +00:00
tracemalloc.c [3.13] gh-128679: Clear the ref tracer in _PyTraceMalloc_Stop() (#129258) 2025-01-24 14:54:02 +01:00
vm-state.md High level docs for the VM state (#111621) 2023-11-01 22:55:10 +00:00

README 

Miscellaneous source files for the main Python shared library