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cpython/Python
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Neil Schemenauer e38967ed60
gh-142531: Fix free-threaded GC performance regression (gh-142562) 
If there are many untracked tuples, the GC will run too often, resulting
in poor performance.  The fix is to include untracked tuples in the
"long lived" object count. The number of frozen objects is also now
included since the free-threaded GC must scan those too.
2025-12-11 12:30:56 -08:00
..
clinic gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
frozen_modules gh-97669: Create Tools/build/ directory (#97963) 2022-10-17 12:01:00 +02:00
_contextvars.c gh-128384: Use a context variable for warnings.catch_warnings (gh-130010) 2025-04-09 16:18:54 -07:00
_warnings.c gh-135801: Improve filtering by module in warn_explicit() without module argument (GH-140151) 2025-10-30 15:55:39 +02:00
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 gh-136459: Add perf trampoline support for macOS (#136461) 2025-07-22 16:47:24 +01:00
assemble.c gh-87859: Track Code Object Local Kinds For Arguments (gh-132980) 2025-04-29 02:21:47 +00:00
ast.c gh-132661: Implement PEP 750 (#132662) 2025-04-30 11:46:41 +02:00
ast_preprocess.c gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
ast_unparse.c gh-132661: Disallow Template/str concatenation after PEP 750 spec update (#135996) 2025-07-21 08:44:26 +02:00
bltinmodule.c gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
bootstrap_hash.c GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
brc.c Fix typos in documentation and comments (#119763) 2024-06-04 10:22:22 +00:00
bytecodes.c gh-134584: Eliminate redundant refcounting from `_CALL_LEN` (gh-136104) 2025-12-11 15:24:34 +00:00
ceval.c GH-135379: Top of stack caching for the JIT. (GH-135465) 2025-12-11 10:32:52 +00:00
ceval_gil.c gh-135953: Add GIL contention markers to sampling profiler Gecko format (#139485) 2025-11-17 12:46:26 +00:00
ceval_macros.h GH-140683: JIT: Improve machine code for loading smaller constants on AArch64. (GH-142511) 2025-12-11 12:33:39 +00:00
codecs.c Python/codecs.c: Remove unused forward declaration (#139511) 2025-10-03 13:33:49 +02:00
codegen.c gh-138349: Fix crash when combining module-level annotation and listcomp (#138363) 2025-09-10 15:18:39 +02:00
compile.c gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
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-138192: Fix Context initialization so that all subinterpreters are assigned the MISSING value. (gh-138503) 2025-09-04 17:19:30 +00:00
critical_section.c gh-140795: fetch thread state once on fast path for critical sections (#141406) 2025-11-21 19:49:53 +05:30
crossinterp.c gh-140306: Fix memory leaks in cross-interpreter data handling (GH-140307) 2025-10-19 22:24:28 +03:00
crossinterp_data_lookup.h gh-135443: Sometimes Fall Back to __main__.__dict__ For Globals (gh-135491) 2025-06-16 17:34:19 -06:00
crossinterp_exceptions.h gh-132775: Clean Up Cross-Interpreter Error Handling (gh-135369) 2025-06-13 16:45:21 -06:00
dtoa.c gh-131238: Add explicit includes to pycore headers (#131257) 2025-03-17 12:32:43 +01:00
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-131238: Remove more includes from pycore_interp.h (#131480) 2025-03-19 23:01:32 +01:00
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-131942: Use the Python-specific Py_DEBUG macro rather than _DEBUG in Windows-related C code (GH-131944) 2025-05-08 15:01:25 +00:00
emscripten_signal.c GH-108614: Unbreak emscripten build (GH-109132) 2023-09-08 17:54:45 +01:00
emscripten_syscalls.c gh-124621: Emscripten: Fix __syscall_ioctl patch (GH-136993) 2025-07-22 15:05:26 +02:00
emscripten_trampoline.c gh-128627: Use __builtin_wasm_test_function_pointer_signature for Emscripten trampoline (#137470) 2025-09-17 15:33:55 +01:00
emscripten_trampoline_inner.c gh-128627: Use __builtin_wasm_test_function_pointer_signature for Emscripten trampoline (#137470) 2025-09-17 15:33:55 +01:00
errors.c gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
executor_cases.c.h gh-134584: Eliminate redundant refcounting from `_CALL_LEN` (gh-136104) 2025-12-11 15:24:34 +00:00
fileutils.c gh-42400: Fix buffer overflow in _Py_wrealpath() for very long paths (#141529) 2025-11-18 17:34:58 +01:00
flowgraph.c gh-138714: Don't assume next block has instructions when propagating line numbers (#138770) 2025-09-17 09:52:56 -07:00
frame.c gh-131173: Improve exception handling during take_ownership processing (#132620) 2025-04-17 13:38:34 -07:00
frozen.c GH-89435: os.path should not be a frozen module (#126924) 2024-11-22 18:50:30 +00:00
frozenmain.c Use PyConfig_Get() in frozenmain.c (#137421) 2025-08-06 14:33:28 +02:00
future.c gh-126139: Improve error message location for future statement with unknown feature (#126140) 2024-10-29 23:57:59 +00:00
gc.c GH-140638: Add a GC "candidates" stat (GH-141814) 2025-11-22 21:59:14 +00:00
gc_free_threading.c gh-142531: Fix free-threaded GC performance regression (gh-142562) 2025-12-11 12:30:56 -08:00
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-134584: Eliminate redundant refcounting from `_CALL_LEN` (gh-136104) 2025-12-11 15:24:34 +00:00
getargs.c Revert "gh-112068: C API: Add support of nullable arguments in PyArg_Parse (GH-121303)" (#136991) 2025-07-22 16:39:50 +03:00
getcompiler.c gh-141341: Rename COMPILER macro to _Py_COMPILER on Windows (#141342) 2025-11-10 15:50:51 +01:00
getcopyright.c gh-126133: Only use start year in PSF copyright, remove end years (#126236) 2024-11-12 15:59:19 +02:00
getopt.c GH-133336: Remove reserved `-J` flag for Jython (#133444) 2025-05-05 15:09:19 +00:00
getplatform.c bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
getversion.c gh-119132: Remove "experimental" tag from the CPython free-threading. (gh-135550) 2025-06-16 23:32:52 +09:00
hamt.c gh-137440: Update comment in Python/hamt.c on importing for testing (GH-137441) 2025-08-07 09:50:49 -04:00
hashtable.c gh-111545: Add Py_HashPointer() function (#112096) 2023-12-06 15:09:22 +01:00
import.c gh-142029: Raise ValueError instead of crashing on empty name given to create_builtin() (#142033) 2025-12-10 12:01:57 +05:30
importdl.c gh-140011: Delete importdl assertion that prevents importing embedded modules from packages (GH-141605) 2025-11-26 14:12:49 +01:00
index_pool.c gh-91048: Refactor and optimize remote debugging module (#134652) 2025-05-25 20:19:29 +00:00
initconfig.c gh-131253: free-threaded build support for pystats (gh-137189) 2025-11-03 11:36:37 -08:00
instruction_sequence.c GH-124715: Move trashcan mechanism into Py_Dealloc (GH-132280) 2025-04-30 11:37:53 +01:00
instrumentation.c gh-120158: Fix inconsistent monitoring state when setting events too frequently (gh-141845) 2025-11-23 10:07:17 -05:00
interpconfig.c GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
intrinsics.c gh-111489: Remove _PyTuple_FromArray() alias (#139973) 2025-10-11 22:58:14 +02:00
jit.c GH-135379: Top of stack caching for the JIT. (GH-135465) 2025-12-11 10:32:52 +00:00
legacy_tracing.c gh-137400: Fix thread-safety issues when profiling all threads (gh-137518) 2025-08-13 14:15:12 -04:00
lock.c gh-131253: free-threaded build support for pystats (gh-137189) 2025-11-03 11:36:37 -08:00
marshal.c gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548) 2025-12-05 16:24:35 +02:00
modsupport.c gh-137210: Add a struct, slot & function for checking an extension's ABI (GH-137212) 2025-09-05 16:23:18 +02:00
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-100240: Use a consistent implementation for freelists (#121934) 2024-07-22 12:08:27 -04:00
opcode_targets.h gh-134584: Eliminate redundant refcounting from _CALL_TUPLE_1 (GH-135860) 2025-12-11 14:31:28 +00:00
optimizer.c GH-135379: Top of stack caching for the JIT. (GH-135465) 2025-12-11 10:32:52 +00:00
optimizer_analysis.c gh-142276: Watch attribute loads when promoting JIT constants (GH-142303) 2025-12-08 18:03:15 +00:00
optimizer_bytecodes.c gh-134584: Eliminate redundant refcounting from `_CALL_LEN` (gh-136104) 2025-12-11 15:24:34 +00:00
optimizer_cases.c.h gh-134584: Eliminate redundant refcounting from `_CALL_LEN` (gh-136104) 2025-12-11 15:24:34 +00:00
optimizer_symbols.c gh-139109: A new tracing JIT compiler frontend for CPython (GH-140310) 2025-11-13 18:08:32 +00:00
parking_lot.c gh-137433: Fix deadlock with stop-the-world and daemon threads (gh-137735) 2025-09-16 09:21:58 +01:00
pathconfig.c gh-133644: Remove deprecated Python initialization getter functions (#133661) 2025-05-09 11:39:23 +00:00
perf_jit_trampoline.c gh-141770: Annotate anonymous mmap usage if "-X dev" is used (gh-142079) 2025-12-08 14:47:19 +00:00
perf_trampoline.c gh-141770: Annotate anonymous mmap usage if "-X dev" is used (gh-142079) 2025-12-08 14:47:19 +00:00
preconfig.c GH-133711: Enable UTF-8 mode by default (PEP 686) (#133712) 2025-07-15 10:45:41 +01:00
pyarena.c Chore: Fix typo in pyarena.c (#126527) 2024-11-07 16:37:41 +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 gh-111389: replace deprecated occurrences of _PyHASH_* macros (#141236) 2025-11-09 15:14:08 +01:00
pylifecycle.c gh-138122: Don't sample partial frame chains (#141912) 2025-12-07 15:53:48 +00:00
pymath.c bpo-45440: Remove pymath.c fallbacks (GH-28977) 2021-10-15 19:45:34 +02:00
pystate.c gh-142048: Fix lost gc allocations count on thread cleanup (#142233) 2025-12-10 07:29:40 +00:00
pystats.c GH-135379: Top of stack caching for the JIT. (GH-135465) 2025-12-11 10:32:52 +00:00
pystrcmp.c gh-108767: Replace ctype.h functions with pyctype.h functions (#108772) 2023-09-01 18:36:53 +02:00
pystrhex.c gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548) 2025-12-05 16:24:35 +02:00
pystrtod.c gh-141004: soft-deprecate Py_INFINITY macro (#141033) 2025-11-12 13:44:49 +01:00
Python-ast.c gh-140471: Fix buffer overflow in AST node initialization with malformed _fields (#140506) 2025-10-23 15:35:21 +00:00
Python-tokenize.c gh-111178: Fix function signatures for test_types (#131455) 2025-03-19 13:46:17 +00:00
pythonrun.c GH-65961: Stop setting __cached__ on modules (GH-142165) 2025-12-11 11:44:46 -08:00
pytime.c Remove internal _PyTime_AsLong() function (#141053) 2025-11-05 18:37:06 +01:00
qsbr.c gh-131253: free-threaded build support for pystats (gh-137189) 2025-11-03 11:36:37 -08:00
README Issue #18093: Factor out the programs that embed the runtime 2014-07-25 21:52:14 +10:00
remote_debug.h gh-138122: Implement frame caching in RemoteUnwinder to reduce memory reads (#142137) 2025-12-06 22:37:34 +00:00
remote_debugging.c gh-138122: Implement frame caching in RemoteUnwinder to reduce memory reads (#142137) 2025-12-06 22:37:34 +00:00
specialize.c gh-141367: Use CALL_LIST_APPEND instruction only for lists, not for list subclasses (GH-141398) 2025-11-14 21:38:39 +00:00
stackrefs.c gh-131527: Stackref debug borrow checker (#140599) 2025-11-05 11:12:56 -08:00
stdlib_module_names.h gh-81313: Add the math.integer module (PEP-791) (GH-133909) 2025-10-31 16:13:43 +02:00
structmember.c gh-132685: fix thread safety of PyMember_GetOne with _Py_T_OBJECT (#132690) 2025-04-18 21:03:42 +05:30
suggestions.c GH-131238: Core header refactor (GH-131250) 2025-03-17 09:19:04 +00:00
symtable.c gh-135801: Add the module parameter to compile() etc (GH-139652) 2025-11-13 13:21:32 +02:00
sysmodule.c gh-141579: Fix perf_jit backend in sys.activate_stack_trampoline() (#141580) 2025-11-15 02:23:54 +00:00
thread.c gh-134745: Use "pymutex" for sys.thread_info on Windows (#141140) 2025-11-06 16:10:39 +01:00
thread_nt.h gh-134745: Change PyThread_allocate_lock() implementation to PyMutex (#134747) 2025-05-30 10:15:47 +00:00
thread_pthread.h gh-137884: Added threading.get_native_id() on Illumos/Solaris (GH-137927) 2025-08-20 17:10:44 +00:00
thread_pthread_stubs.h gh-125161: return non zero value in pthread_self on wasi (#125303) 2024-10-13 20:59:41 +05:30
tier2_engine.md Docs: fix spelling of the word 'transferring' (#116641) 2024-03-13 23:53:32 +01:00
traceback.c gh-138122: Don't sample partial frame chains (#141912) 2025-12-07 15:53:48 +00:00
tracemalloc.c gh-127635: Use flexible array in tracemalloc (#141991) 2025-11-27 12:32:31 +01:00
uniqueid.c gh-128923: Use zero to indicate unassigned unique id (#128925) 2025-01-17 16:42:27 +01:00
vm-state.md gh-133079: Remove Py_C_RECURSION_LIMIT & PyThreadState.c_recursion_remaining (GH-133080) 2025-04-29 12:56:20 +02:00

README 

Miscellaneous source files for the main Python shared library