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Miss Islington (bot) 80d7626c74 [3.15] gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2 (gh-151554) 
This mimics an optimization already present for the single-mutex critical section.
(cherry picked from commit c2ca7724af)

Co-authored-by: Daniele Parmeggiani <8658291+dpdani@users.noreply.github.com>
2026-06-19 09:52:07 -04:00
..
clinic
[3.15] gh-149321: Remove lazy_imports=none startup mode (GH-149389) (#150129)
2026-06-08 22:55:57 +00:00
frozen_modules
…
_contextvars.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_warnings.c
gh-143231: Add the module attribute to warnings.WarningMessage (GH-149298)
2026-05-03 09:35:47 +00:00
asdl.c
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asm_trampoline_aarch64.h
[3.15] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (GH-130864) (#149730)
2026-05-12 22:10:24 +02:00
asm_trampoline.S
[3.15] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (GH-130864) (#149730)
2026-05-12 22:10:24 +02:00
assemble.c
[3.15] gh-151112: Fix double free in assemble_init when out of memory (GH-151142) (#151205)
2026-06-09 20:16:42 +00:00
ast_preprocess.c
gh-143055: Implementation of PEP 798 (#143056)
2026-01-30 20:37:52 -08:00
ast_unparse.c
gh-143055: Fix crash in AST unparser when unparsing dict comprehension unpacking (#145556)
2026-03-09 10:37:23 -07:00
ast.c
gh-143055: Implementation of PEP 798 (#143056)
2026-01-30 20:37:52 -08:00
bltinmodule.c
[3.15] gh-151510: Fix __lazy_import__ without frame (GH-151511) (#151610)
2026-06-17 18:40:33 +00:00
bootstrap_hash.c
GH-131238: Core header refactor (GH-131250)
2025-03-17 09:19:04 +00:00
brc.c
…
bytecodes.c
[3.15] gh-151436: Fix missing tstate->last_profiled_frame updates (GH-151437) (#151612)
2026-06-19 10:24:53 +02:00
ceval_gil.c
gh-144748: Make PyErr_CheckSignals raise the exception scheduled by PyThreadState_SetAsyncExc (GH-145178)
2026-03-02 11:47:32 +01:00
ceval_macros.h
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
ceval.c
[3.15] gh-151436: Fix missing tstate->last_profiled_frame updates (GH-151437) (#151612)
2026-06-19 10:24:53 +02:00
ceval.h
gh-142186: Allow all PEP-669 events to be per-code object and disableable (GH-146182)
2026-04-22 09:08:23 +01:00
codecs.c
[3.15] gh-151253: Dump the Python path configuration on _PyCodec_InitRegistry() failure (#151250) (#151269)
2026-06-10 22:03:27 +02:00
codegen.c
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
compile.c
[3.15] gh-151112: Fix crash in compiler_mod() when entering the current compilation unit fails (GH-151234) (#151350)
2026-06-11 15:22:31 +00:00
condvar.h
…
config_common.h
…
context.c
[3.15] gh-150319: Replace all documentation which says "See PEP 585" (GH-150325) (#150808)
2026-06-02 20:40:52 +00:00
critical_section.c
[3.15] gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2 (gh-151554)
2026-06-19 09:52:07 -04:00
crossinterp_data_lookup.h
gh-147960: Fix memory leak in crossinterp _tuple_shared() on alloc failure (#147961)
2026-04-01 18:34:55 +02:00
crossinterp_exceptions.h
gh-132775: Clean Up Cross-Interpreter Error Handling (gh-135369)
2025-06-13 16:45:21 -06:00
crossinterp.c
gh-147998: Fix possible memory leak in _pop_preserved (crossinterp.c) (GH-147999)
2026-05-04 16:45:31 +03:00
dtoa.c
gh-145633: Remove support for ancient ARM platforms with mixed-endian doubles (#145634)
2026-03-11 12:39:24 +01:00
dup2.c
…
dynamic_annotations.c
…
dynload_hpux.c
…
dynload_shlib.c
gh-146636: PEP 803: add Py_TARGET_ABI3T and .abi3t.so extension (GH-146637)
2026-04-01 16:14:59 +02:00
dynload_stub.c
…
dynload_win.c
gh-148690: Build Windows freethreaded binaries into separate directory and include python3t.dll on GIL-enabled (GH-149218)
2026-05-04 17:45:08 +01:00
emscripten_signal.c
…
emscripten_syscalls.c
gh-124621: Emscripten: Fix __syscall_ioctl patch (GH-136993)
2025-07-22 15:05:26 +02:00
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
emscripten_trampoline.c
gh-145037: Fix Emscripten trampoline with emcc >= 4.0.19 (#145038)
2026-02-26 06:21:05 +08:00
errors.c
gh-146480: Override the exception in _PyErr_SetKeyError() (#146486)
2026-03-27 11:20:19 +00:00
executor_cases.c.h
[3.15] gh-151436: Fix missing tstate->last_profiled_frame updates (GH-151437) (#151612)
2026-06-19 10:24:53 +02:00
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
[3.15] gh-151112: Move an assert that may fail in cfg_builder_check (GH-151153) (#151313)
2026-06-11 09:46:04 +00:00
frame.c
gh-144446: Fix some frame object thread-safety issues (gh-144479)
2026-02-06 09:43:36 -05:00
frozen.c
GH-145278: freeze encodings (partially) and linecache (#148347)
2026-04-14 21:01:23 +01:00
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_free_threading.c
gh-148937: revert process RSS based GC deferral (#149475)
2026-05-07 14:32:14 +03:00
gc_gil.c
…
gc.c
[3.15] gh-146527: Fix memory leak in _PyGC_Fini() (GH-150969) (#150970)
2026-06-05 14:11:37 +00:00
generated_cases.c.h
[3.15] gh-151436: Fix missing tstate->last_profiled_frame updates (GH-151437) (#151612)
2026-06-19 10:24:53 +02:00
getargs.c
gh-146615: Fix format specifiers in Python/ directory (GH-146619)
2026-03-31 10:59:17 +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
…
getversion.c
gh-119132: Remove "experimental" tag from the CPython free-threading. (gh-135550)
2025-06-16 23:32:52 +09:00
hamt.c
[3.15] gh-150178: Fix refcount leaks in hamt allocation failure paths (GH-150179) (#150303)
2026-05-23 19:27:27 +00:00
hashtable.c
…
import.c
[3.15] gh-150633: Properly handle null characters in the name when importing frozen modules (GH-150634) (GH-151100)
2026-06-08 18:58:11 +00:00
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
[3.15] gh-151218: Replace sys.flags in PyConfig_Set() (GH-151402) (#151552)
2026-06-16 16:48:56 +00:00
instruction_sequence.c
GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569)
2026-01-16 09:11:58 +00:00
instrumentation.c
gh-142186: Allow all PEP-669 events to be per-code object and disableable (GH-146182)
2026-04-22 09:08:23 +01:00
interpconfig.c
gh-146615: Fix format specifiers in Python/ directory (GH-146619)
2026-03-31 10:59:17 +03:00
intrinsics.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
jit_publish.c
GH-126910: Add GNU backtrace support for unwinding JIT frames (#149104)
2026-05-05 09:29:07 +01:00
jit_unwind.c
[3.15] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (GH-130864) (#149730)
2026-05-12 22:10:24 +02:00
jit.c
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
legacy_tracing.c
gh-148037: remove critical section from PyCode_Addr2Line (#148103)
2026-04-10 17:58:17 +05:30
lock.c
gh-148820: Fix _PyRawMutex use-after-free on spurious semaphore wakeup (gh-148852)
2026-04-22 14:31:19 -04:00
marshal.c
[3.15] gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338) (GH-150350)
2026-05-24 22:31:19 +03:00
modsupport.c
gh-146636: Py_mod_abi mandatory for modules created from slots array (GH-146855)
2026-04-02 13:54:21 +02:00
mysnprintf.c
…
mystrtoul.c
…
object_stack.c
…
opcode_targets.h
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
optimizer_analysis.c
[3.15] gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233) (#149690)
2026-05-11 14:23:39 -04:00
optimizer_bytecodes.c
[3.15] gh-149459: Fix segfault when _LOAD_SPECIAL guard deoptimizes (GH-149478) (#149552)
2026-05-08 11:48:04 +00:00
optimizer_cases.c.h
[3.15] gh-149459: Fix segfault when _LOAD_SPECIAL guard deoptimizes (GH-149478) (#149552)
2026-05-08 11:48:04 +00:00
optimizer_symbols.c
gh-146261: JIT: protect against function version changes (#146300)
2026-04-13 02:23:47 +08:00
optimizer.c
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
parking_lot.c
gh-148820: Fix _PyRawMutex use-after-free on spurious semaphore wakeup (gh-148852)
2026-04-22 14:31:19 -04:00
pathconfig.c
gh-133644: Remove deprecated Python initialization getter functions (#133661)
2025-05-09 11:39:23 +00:00
perf_jit_trampoline.c
[3.15] gh-150723: Fix perf jitdump files on macOS (GH-150728) (#150832)
2026-06-03 00:41:24 +00:00
perf_trampoline.c
[3.15] gh-149156: Fix perf trampoline crash after fork (GH-150347) (#150394)
2026-05-25 19:19:22 +01:00
preconfig.c
gh-146302: make Py_IsInitialized() thread-safe and reflect true init completion (GH-146303)
2026-04-11 21:54:23 +00:00
pyarena.c
Chore: Fix typo in pyarena.c (#126527)
2024-11-07 16:37:41 +01:00
pyctype.c
…
pyfpe.c
…
pyhash.c
gh-141226: Deprecate PEP-456 support for embedders (#141287)
2026-02-21 12:42:13 +01:00
pylifecycle.c
[3.15] gh-151218: Replace sys.flags in PyConfig_Set() (GH-151402) (#151552)
2026-06-16 16:48:56 +00:00
pymath.c
…
pystate.c
[3.15] gh-149335: Avoid JIT trace buffer asserts with overhead above FITNESS_INITIAL (GH-149633) (#150245)
2026-05-24 12:48:58 +05:30
pystats.c
gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-148089)
2026-04-24 10:37:01 +01:00
pystrcmp.c
…
pystrhex.c
[3.15] gh-149685: Use the _Py prefix for private C macros (GH-149686) (GH-149790)
2026-05-13 23:29:08 +02:00
pystrtod.c
gh-141004: soft-deprecate Py_INFINITY macro (#141033)
2025-11-12 13:44:49 +01:00
Python-ast.c
gh-116021: Deprecate support for instantiating abstract AST nodes (#137865)
2026-05-02 09:50:06 -07:00
Python-tokenize.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
pythonrun.c
gh-146615: Fix format specifiers in Python/ directory (GH-146619)
2026-03-31 10:59:17 +03:00
pytime.c
gh-145731: Fix negative timestamp during DST on Windows (GH-145728)
2026-03-10 09:45:07 +01:00
qsbr.c
gh-144438: Fix false sharing between QSBR and tlbc_index (gh-144554)
2026-02-17 11:12:25 -05:00
README
…
record_functions.c.h
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
remote_debug.h
[3.15] gh-149619: Harden _remote_debugging error paths (GH-150349) (#150435)
2026-05-25 23:02:37 +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
slots_generated.c
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
slots.c
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
slots.toml
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
specialize.c
gh-100239: specialize mixed int/float inplace binary ops (GH-149413)
2026-05-06 13:59:08 +01:00
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-146270: Fix PyMember_SetOne(..., NULL) not being atomic (gh-148800)
2026-05-06 09:50:24 -04:00
suggestions.c
GH-131238: Core header refactor (GH-131250)
2025-03-17 09:19:04 +00:00
symtable.c
[3.15] gh-150700: Fix class-scope inline comprehensions when nested scopes reference __class__ and friends (GH-150735) (#151211)
2026-06-09 16:33:04 -07:00
sysmodule.c
[3.15] gh-151218: Replace sys.flags in PyConfig_Set() (GH-151402) (#151552)
2026-06-16 16:48:56 +00:00
thread_nt.h
gh-134745: Change PyThread_allocate_lock() implementation to PyMutex (#134747)
2025-05-30 10:15:47 +00:00
thread_pthread_stubs.h
…
thread_pthread.h
gh-137884: Added threading.get_native_id() on Illumos/Solaris (GH-137927)
2025-08-20 17:10:44 +00:00
thread.c
gh-134745: Use "pymutex" for sys.thread_info on Windows (#141140)
2025-11-06 16:10:39 +01:00
tier2_engine.md
…
traceback.c
gh-145559: Add PyUnstable_DumpTraceback() and PyUnstable_DumpTracebackThreads() (#148145)
2026-05-06 15:01:12 +00:00
tracemalloc.c
gh-144763: Don't detach the GIL in tracemalloc (#144779)
2026-02-18 15:57:48 +00:00
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
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