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cpython/Python
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Pieter Eendebak 7e38e6745d
gh-123271: Make builtin zip method safe under free-threading (#123272) 
The `zip_next` function uses a common optimization technique for methods
that generate tuples. The iterator maintains an internal reference to
the returned tuple. When the method is called again, it checks if the
internal tuple's reference count is 1. If so, the tuple can be reused.
However, this approach is not safe under the free-threading build:
after checking the reference count, another thread may perform the same
check and also reuse the tuple. This can result in a double decref on
the items of the replaced tuple and a double incref (memory leak) on
the items of the tuple being set.

This adds a function, `_PyObject_IsUniquelyReferenced` that
encapsulates the stricter logic necessary for the free-threaded build:
the internal tuple must be owned by the current thread, have a local
refcount of one, and a shared refcount of zero.
2024-08-27 15:22:43 -04:00
..
clinic gh-113993: Allow interned strings to be mortal, and fix related issues (GH-120520) 2024-06-21 17:19:31 +02:00
frozen_modules
_warnings.c gh-121163: Add "all" as an valid alias for "always" in warnings.simplefilter() (#121164) 2024-06-30 19:48:00 +02:00
asdl.c
asm_trampoline.S gh-120400 ：Support Linux perf profile to see Python calls on RISC-V architecture (#120089) 2024-06-12 14:24:46 +01:00
assemble.c gh-121040: Use __attribute__((fallthrough)) (#121044) 2024-06-27 09:58:44 +00:00
ast.c gh-122313: Clean up deep recursion guarding code in the compiler (GH-122640) 2024-08-03 12:45:45 +03:00
ast_opt.c gh-122313: Clean up deep recursion guarding code in the compiler (GH-122640) 2024-08-03 12:45:45 +03:00
ast_unparse.c gh-113993: Allow interned strings to be mortal, and fix related issues (GH-120520) 2024-06-21 17:19:31 +02:00
bltinmodule.c gh-123271: Make builtin zip method safe under free-threading (#123272) 2024-08-27 15:22:43 -04:00
bootstrap_hash.c gh-121199: Use _Py__has_attribute() in timemodule.c (#121203) 2024-07-01 08:49:33 +00:00
brc.c Fix typos in documentation and comments (#119763) 2024-06-04 10:22:22 +00:00
bytecodes.c GH-123232: Factor BINARY_SLICE and STORE_SLICE to handle stats properly for tier 2. (GH-123381) 2024-08-27 10:49:39 +01:00
ceval.c gh-117376: Make Py_DECREF a macro in ceval.c in free-threaded build (#122975) 2024-08-23 15:36:14 -04:00
ceval_gil.c gh-122860: Remove unused macro _Py_atomic_load_relaxed_int32 (#122861) 2024-08-11 22:45:02 +05:30
ceval_macros.h GH-118093: Make CALL_ALLOC_AND_ENTER_INIT suitable for tier 2. (GH-123140) 2024-08-20 16:52:58 +01:00
codecs.c gh-113993: Allow interned strings to be mortal, and fix related issues (GH-120520) 2024-06-21 17:19:31 +02:00
compile.c gh-121404: split compiler_nameop into a codegen part and a compiler part (#123398) 2024-08-27 16:57:31 +01:00
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 gh-100240: Use a consistent implementation for freelists (#121934) 2024-07-22 12:08:27 -04:00
critical_section.c gh-119344: Make critical section API public (#119353) 2024-06-21 15:50:18 -04:00
crossinterp.c Fix typos in docs, error messages and comments (#122502) 2024-08-01 00:26:09 +00:00
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 gh-117398: Use Per-Interpreter State for the _datetime Static Types (gh-119929) 2024-06-03 17:09:18 -06:00
dtoa.c gh-121040: Use __attribute__((fallthrough)) (#121044) 2024-06-27 09:58:44 +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
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 gh-121698 Emscripten: Use updated WebAssembly type reflection proposal (GH-121699) 2024-07-14 11:25:09 +02:00
errors.c gh-118702: Implement vectorcall for BaseException (#118703) 2024-05-10 21:08:24 +02:00
executor_cases.c.h GH-123232: Factor BINARY_SLICE and STORE_SLICE to handle stats properly for tier 2. (GH-123381) 2024-08-27 10:49:39 +01:00
fileutils.c gh-117657: Fix TSan reported data race on ioctl_works (#120175) 2024-06-17 13:23:40 -04:00
flowgraph.c Fixes loop variables to be the same types as their limit (GH-120958) 2024-06-24 17:11:47 +01:00
formatter_unicode.c gh-121040: Use __attribute__((fallthrough)) (#121044) 2024-06-27 09:58:44 +00:00
frame.c gh-117139: Garbage collector support for deferred refcounting (#122956) 2024-08-15 16:09:11 +00:00
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 Fixes loop variables to be the same types as their limit (GH-120958) 2024-06-24 17:11:47 +01:00
gc.c GH-117759: Document incremental GC (GH-123266) 2024-08-27 15:23:39 +01:00
gc_free_threading.c GH-115776: Allow any fixed sized object to have inline values (GH-123192) 2024-08-21 15:52:04 +01:00
gc_gil.c gh-100240: Use a consistent implementation for freelists (#121934) 2024-07-22 12:08:27 -04:00
generated_cases.c.h GH-123232: Factor BINARY_SLICE and STORE_SLICE to handle stats properly for tier 2. (GH-123381) 2024-08-27 10:49:39 +01:00
getargs.c gh-118814: Fix the TypeVar constructor when name is passed by keyword (GH-122664) 2024-08-07 23:30:10 +03:00
getcompiler.c
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
getversion.c gh-119132: Update sys.version to identify free-threaded or not. (gh-119134) 2024-05-18 19:44:40 +00:00
hamt.c
hashtable.c gh-111545: Add Py_HashPointer() function (#112096) 2023-12-06 15:09:22 +01:00
import.c gh-122188: Remove _imp.pyc_magic_number (GH-122503) 2024-08-02 13:12:19 +03:00
importdl.c gh-122907: Fix Builds Without HAVE_DYNAMIC_LOADING Set (gh-122952) 2024-08-13 14:44:57 -06:00
initconfig.c gh-119574: Add some missing environment variables to '--help-env'. (GH-120006) 2024-06-18 17:12:58 +00:00
instruction_sequence.c gh-117680: Fix msvc warning in instruction_sequence.c (#118326) 2024-04-26 17:20:30 +01:00
instrumentation.c GH-122390: Replace _Py_GetbaseOpcode with _Py_GetBaseCodeUnit (GH-122942) 2024-08-13 14:22:57 +01:00
interpconfig.c gh-76785: Fix a Refleak in _interpreters.new_config() (gh-117491) 2024-04-03 01:10:26 +00:00
intrinsics.c gh-74929: Implement PEP 667 (GH-115153) 2024-05-04 12:12:10 +01:00
jit.c GH-116017: Get rid of _COLD_EXITs (GH-120960) 2024-07-01 13:17:40 -07:00
legacy_tracing.c gh-122029: Log call events in sys.setprofile when it's a method with c function (GH-122072) 2024-07-23 15:25:26 -07:00
lock.c gh-121368: Fix seq lock memory ordering in _PyType_Lookup (#121388) 2024-07-08 14:52:07 -04:00
marshal.c gh-121905: Consistently use "floating-point" instead of "floating point" (GH-121907) 2024-07-19 08:06:02 +00:00
modsupport.c gh-121040: Use __attribute__((fallthrough)) (#121044) 2024-06-27 09:58:44 +00:00
mysnprintf.c
mystrtoul.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
object_stack.c gh-100240: Use a consistent implementation for freelists (#121934) 2024-07-22 12:08:27 -04:00
opcode_targets.h GH-123040: Specialize shadowed LOAD_ATTR. (GH-123219) 2024-08-23 10:22:35 +01:00
optimizer.c GH-118093: Specialize CALL_KW (GH-123006) 2024-08-16 17:11:24 +01:00
optimizer_analysis.c GH-118095: Add tier two support for BINARY_SUBSCR_GETITEM (GH-120793) 2024-08-01 16:19:05 -07:00
optimizer_bytecodes.c GH-115776: Allow any fixed sized object to have inline values (GH-123192) 2024-08-21 15:52:04 +01:00
optimizer_cases.c.h GH-115776: Allow any fixed sized object to have inline values (GH-123192) 2024-08-21 15:52:04 +01:00
optimizer_symbols.c gh-120642: Move private PyCode APIs to the internal C API (#120643) 2024-06-26 13:54:03 +02:00
parking_lot.c gh-117657: Avoid sem_clockwait in TSAN (#119915) 2024-06-03 13:42:27 -04:00
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 GH-118844: Fix build failures when combining --disable-gil with --enable-experimental-jit (GH-118935) 2024-05-11 16:19:31 -07:00
perf_trampoline.c gh-118518: Allow perf to work without frame pointers (#112254) 2024-05-05 03:07:29 +02:00
preconfig.c
pyarena.c gh-119219: Remove two obsolete TODOs. (#119223) 2024-05-20 16:54:16 +00:00
pyctype.c
pyfpe.c
pyhash.c gh-121040: Use __attribute__((fallthrough)) (#121044) 2024-06-27 09:58:44 +00:00
pylifecycle.c Add debug offsets for free threaded builds (#123041) 2024-08-15 18:42:41 +00:00
pymath.c
pystate.c Remove comment from pystate created in 2003 (#123259) 2024-08-24 20:36:42 +00:00
pystrcmp.c
pystrhex.c gh-108765: pystrhex: Replace stdlib.h abs() with Py_ABS() (#108830) 2023-09-02 23:15:54 +02:00
pystrtod.c gh-121040: Use __attribute__((fallthrough)) (#121044) 2024-06-27 09:58:44 +00:00
Python-ast.c gh-121332: Make AST node constructor check _attributes instead of hardcoding attributes (#121334) 2024-07-11 14:34:53 +00:00
Python-tokenize.c gh-120317: Lock around global state in the tokenize module (#120318) 2024-07-16 11:35:57 +02:00
pythonrun.c gh-111201: A new Python REPL (GH-111567) 2024-05-05 21:32:23 +02:00
pytime.c gh-119613: Use C99+ functions instead of Py_IS_NAN/INFINITY/FINITE (#119619) 2024-05-29 09:51:19 +02:00
qsbr.c Fix typos in comments (#120481) 2024-06-19 23:16:14 -04:00
README
specialize.c GH-123232: Fix "not specialized" stats (GH-123236) 2024-08-23 10:46:03 +01:00
stdlib_module_names.h gh-119180: Add annotationlib module to support PEP 649 (#119891) 2024-07-23 21:16:50 +00:00
structmember.c gh-117657: Fix __slots__ thread safety in free-threaded build (#119368) 2024-06-17 18:44:54 +00:00
suggestions.c Fixes loop variables to be the same types as their limit (GH-120958) 2024-06-24 17:11:47 +01:00
symtable.c gh-122985: add SYMBOL_TO_SCOPE macro in symtable (#122986) 2024-08-14 06:17:04 +01:00
sysmodule.c gh-113993: Allow interned strings to be mortal, and fix related issues (GH-120520) 2024-06-21 17:19:31 +02:00
thread.c gh-110850: Cleanup PyTime API: PyTime_t are nanoseconds (#115753) 2024-02-21 11:46:00 +01:00
thread_nt.h gh-110850: Use _PyDeadline_Get() in EnterNonRecursiveMutex() (#118556) 2024-05-04 09:39:58 +02:00
thread_pthread.h gh-110850: Remove _PyTime_TimeUnchecked() function (#118552) 2024-05-05 12:15:19 +02:00
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 gh-117764: Fix and add signatures for many builtins (GH-117769) 2024-04-12 13:56:41 +03:00
tracemalloc.c gh-121390: tracemalloc: Fix tracebacks memory leak (#121391) 2024-07-05 08:39:48 +02:00
typeid.c gh-122417: Implement per-thread heap type refcounts (#122418) 2024-08-06 14:36:57 -04:00
vm-state.md Fix typos in documentation and comments (#119763) 2024-06-04 10:22:22 +00:00

README 

Miscellaneous source files for the main Python shared library