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* gh-111569: Implement Python critical section API (gh-111571)Sam Gross2023-11-081-0/+3
| | | | | | | | Critical sections are helpers to replace the global interpreter lock with finer grained locking. They provide similar guarantees to the GIL and avoid the deadlock risk that plain locking involves. Critical sections are implicitly ended whenever the GIL would be released. They are resumed when the GIL would be acquired. Nested critical sections behave as if the sections were interleaved.
* gh-108082: Remove _PyErr_WriteUnraisableMsg() (GH-111643)Serhiy Storchaka2023-11-031-32/+0
| | | | Replace the remaining calls with PyErr_FormatUnraisable().
* gh-76785: Move the Cross-Interpreter Code to Its Own File (gh-111502)Eric Snow2023-10-301-0/+54
| | | This is partly to clear this stuff out of pystate.c, but also in preparation for moving some code out of _xxsubinterpretersmodule.c. This change also moves this stuff to the internal API (new: Include/internal/pycore_crossinterp.h). @vstinner did this previously and I undid it. Now I'm re-doing it. :/
* gh-109587: Allow "precompiled" perf-trampolines to largely mitigate the cost ↵gsallam2023-10-271-0/+32
| | | | of enabling perf-trampolines (#109666)
* GH-109369: Add machinery for deoptimizing tier2 executors, both individually ↵Mark Shannon2023-10-231-0/+28
| | | | and globally. (GH-110384)
* gh-110525: Add tests for internal `set` CAPI (GH-110630)Nikita Sobolev2023-10-101-0/+3
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* gh-110241: Add missing error check to `record_eval` in `_testinternalcapi` ↵Nikita Sobolev2023-10-021-1/+5
| | | | (#110242)
* gh-109723: Disable Py_BUILD_CORE in _testcapi (#109727)Victor Stinner2023-09-221-0/+62
| | | | | | | | | | | | | | | | | | Make sure that the internal C API is not tested by mistake by _testcapi. Undefine Py_BUILD_CORE_BUILTIN and Py_BUILD_CORE_MODULE macros in Modules/_testcapi/parts.h: move code from _testcapimodule.c. heaptype_relative.c and vectorcall_limited.c are using the limited C API which is incompatible with the internal C API. Move test_long_numbits() from _testcapi to _testinternalcapi since it uses the internal C API "pycore_long.h". Fix Modules/_testcapi/pyatomic.c: don't include Python.h directly, just include _testcapi/parts.h. Ajust "make check-c-globals" for these changes.
* gh-109693: Remove pycore_atomic_funcs.h (#109694)Sam Gross2023-09-211-13/+0
| | | _PyUnicode_FromId() now uses pyatomic.h functions instead.
* gh-108724: Add PyMutex and _PyParkingLot APIs (gh-109344)Sam Gross2023-09-191-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | PyMutex is a one byte lock with fast, inlineable lock and unlock functions for the common uncontended case. The design is based on WebKit's WTF::Lock. PyMutex is built using the _PyParkingLot APIs, which provides a cross-platform futex-like API (based on WebKit's WTF::ParkingLot). This internal API will be used for building other synchronization primitives used to implement PEP 703, such as one-time initialization and events. This also includes tests and a mini benchmark in Tools/lockbench/lockbench.py to compare with the existing PyThread_type_lock. Uncontended acquisition + release: * Linux (x86-64): PyMutex: 11 ns, PyThread_type_lock: 44 ns * macOS (arm64): PyMutex: 13 ns, PyThread_type_lock: 18 ns * Windows (x86-64): PyMutex: 13 ns, PyThread_type_lock: 38 ns PR Overview: The primary purpose of this PR is to implement PyMutex, but there are a number of support pieces (described below). * PyMutex: A 1-byte lock that doesn't require memory allocation to initialize and is generally faster than the existing PyThread_type_lock. The API is internal only for now. * _PyParking_Lot: A futex-like API based on the API of the same name in WebKit. Used to implement PyMutex. * _PyRawMutex: A word sized lock used to implement _PyParking_Lot. * PyEvent: A one time event. This was used a bunch in the "nogil" fork and is useful for testing the PyMutex implementation, so I've included it as part of the PR. * pycore_llist.h: Defines common operations on doubly-linked list. Not strictly necessary (could do the list operations manually), but they come up frequently in the "nogil" fork. ( Similar to https://man.freebsd.org/cgi/man.cgi?queue) --------- Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
* GH-91079: Rename C_RECURSION_LIMIT to Py_C_RECURSION_LIMIT (#108507)Victor Stinner2023-09-081-0/+5
| | | | | | | Symbols of the C API should be prefixed by "Py_" to avoid conflict with existing names in 3rd party C extensions on "#include <Python.h>". test.pythoninfo now logs Py_C_RECURSION_LIMIT constant and other _testcapi and _testinternalcapi constants.
* gh-106320: Remove private _PyErr_WriteUnraisableMsg() (#108863)Victor Stinner2023-09-041-1/+32
| | | | | | Move the private _PyErr_WriteUnraisableMsg() functions to the internal C API (pycore_pyerrors.h). Move write_unraisable_exc() from _testcapi to _testinternalcapi.
* gh-108777: Split _PyTime tests from _testinternalcapi.c (gh-108787)Sam Gross2023-09-021-261/+6
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* gh-106320: Remove private _PyErr_ChainExceptions() (#108713)Victor Stinner2023-08-311-0/+103
| | | | | | | | | | | | | Remove _PyErr_ChainExceptions(), _PyErr_ChainExceptions1() and _PyErr_SetFromPyStatus() functions from the public C API. * Move the private _PyErr_ChainExceptions() and _PyErr_ChainExceptions1() function to the internal C API (pycore_pyerrors.h). * Move the private _PyErr_SetFromPyStatus() to the internal C API (pycore_initconfig.h). * No longer export the _PyErr_ChainExceptions() function. * Move run_in_subinterp_with_config() from _testcapi to _testinternalcapi.
* gh-106320: Remove private _PyDict functions (#108449)Victor Stinner2023-08-241-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | Move private functions to the internal C API (pycore_dict.h): * _PyDictView_Intersect() * _PyDictView_New() * _PyDict_ContainsId() * _PyDict_DelItemId() * _PyDict_DelItem_KnownHash() * _PyDict_GetItemIdWithError() * _PyDict_GetItem_KnownHash() * _PyDict_HasSplitTable() * _PyDict_NewPresized() * _PyDict_Next() * _PyDict_Pop() * _PyDict_SetItemId() * _PyDict_SetItem_KnownHash() * _PyDict_SizeOf() No longer export most of these functions. Move also the _PyDictViewObject structure to the internal C API. Move dict_getitem_knownhash() function from _testcapi to the _testinternalcapi extension. Update test_capi.test_dict for this change.
* gh-106320: Remove private _PyContext_NewHamtForTests() (#108434)Victor Stinner2023-08-241-1/+10
| | | Move the function to the internal C API.
* gh-107211: No longer export internal functions (7) (#108425)Victor Stinner2023-08-241-2/+2
| | | | | | | | | No longer export _PyUnicode_FromId() internal C API function. Change comment style to "// comment" and add comment explaining why other functions have to be exported. Update Tools/build/generate_token.py to update Include/internal/pycore_token.h comments.
* gh-108216: Cleanup #include in internal header files (#108228)Victor Stinner2023-08-211-20/+18
| | | | | | | | | | | * Add missing includes. * Remove unused includes. * Update old include/symbol names to newer names. * Mention at least one included symbol. * Sort includes. * Update Tools/cases_generator/generate_cases.py used to generated pycore_opcode_metadata.h. * Update Parser/asdl_c.py used to generate pycore_ast.h. * Cleanup also includes in _testcapimodule.c and _testinternalcapi.c.
* GH-106485: Handle dict subclasses correctly when dematerializing `__dict__` ↵Mark Shannon2023-08-101-0/+36
| | | | (GH-107837)
* gh-101524: Only Use Public C-API in the _xxsubinterpreters Module (gh-107359)Eric Snow2023-07-271-6/+6
| | | The _xxsubinterpreters module should not rely on internal API. Some of the functions it uses were recently moved there however. Here we move them back (and expose them properly).
* gh-106320: Remove private _PyMem API (#107187)Victor Stinner2023-07-241-0/+13
| | | | | | | | | | | | | Move private _PyMem functions to the internal C API (pycore_pymem.h): * _PyMem_GetCurrentAllocatorName() * _PyMem_RawStrdup() * _PyMem_RawWcsdup() * _PyMem_Strdup() No longer export these functions. Move pymem_getallocatorsname() function from _testcapi to _testinternalcapi, since the API moved to the internal C API.
* gh-106320: Remove private _PyObject C API (#107147)Victor Stinner2023-07-231-1/+80
| | | | | | | | | | | | | | | | Move private debug _PyObject functions to the internal C API (pycore_object.h): * _PyDebugAllocatorStats() * _PyObject_CheckConsistency() * _PyObject_DebugTypeStats() * _PyObject_IsFreed() No longer export most of these functions, except of _PyObject_IsFreed(). Move test functions using _PyObject_IsFreed() from _testcapi to _testinternalcapi. check_pyobject_is_freed() test no longer catch _testcapi.error: the tested function cannot raise _testcapi.error.
* gh-106320: Remove private _PyInterpreterID C API (#107053)Victor Stinner2023-07-221-2/+2
| | | | | | | Move the private _PyInterpreterID C API to the internal C API: add a new pycore_interp_id.h header file. Remove Include/interpreteridobject.h and Include/cpython/interpreteridobject.h header files.
* gh-86493: Fix possible leaks in some modules initialization (GH-106768)Serhiy Storchaka2023-07-181-4/+4
| | | | Fix _ssl, _stat, _testinternalcapi, _threadmodule, cmath, math, posix, time.
* gh-81283: compiler: remove indent from docstring (#106411)Inada Naoki2023-07-151-1/+19
| | | Co-authored-by: Éric <merwok@netwok.org>
* gh-105235: Prevent reading outside buffer during mmap.find() (#105252)Dennis Sweeney2023-07-131-0/+114
| | | | | | | * Add a special case for s[-m:] == p in _PyBytes_Find * Add tests for _PyBytes_Find * Make sure that start <= end in mmap.find
* GH-106360: Support very basic superblock introspection (#106422)Mark Shannon2023-07-041-0/+21
| | | * Add len() and indexing support to uop superblocks.
* gh-106320: Remove private pylifecycle.h functions (#106400)Victor Stinner2023-07-041-0/+33
| | | | | | | Remove private pylifecycle.h functions: move them to the internal C API ( pycore_atexit.h, pycore_pylifecycle.h and pycore_signal.h). No longer export most of these functions. Move _testcapi.test_atexit() to _testinternalcapi.
* gh-106320: Remove _PyUnicode_TransformDecimalAndSpaceToASCII() (#106398)Victor Stinner2023-07-041-0/+12
| | | | | | | | Remove private _PyUnicode_TransformDecimalAndSpaceToASCII() and other private _PyUnicode C API functions: move them to the internal C API (pycore_unicodeobject.h). No longer most of these functions. Replace _testcapi.unicode_transformdecimalandspacetoascii() with _testinternal._PyUnicode_TransformDecimalAndSpaceToASCII().
* gh-106320: Use _PyInterpreterState_GET() (#106336)Victor Stinner2023-07-021-3/+3
| | | | Replace PyInterpreterState_Get() with inlined _PyInterpreterState_GET().
* gh-104922: remove PY_SSIZE_T_CLEAN (#106315)Inada Naoki2023-07-021-2/+0
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* gh-106320: Remove private _PyInterpreterState functions (#106325)Victor Stinner2023-07-021-0/+22
| | | | | | | | | Remove private _PyThreadState and _PyInterpreterState C API functions: move them to the internal C API (pycore_pystate.h and pycore_interp.h). Don't export most of these functions anymore, but still export functions used by tests. Remove _PyThreadState_Prealloc() and _PyThreadState_Init() from the C API, but keep it in the stable API.
* gh-106320: Remove private _PyTraceMalloc C API functions (#106324)Victor Stinner2023-07-021-1/+19
| | | | | | | * Remove private _PyTraceMalloc C API functions: move them to the internal C API. * Don't export most of these functions anymore, but still export _PyTraceMalloc_GetTraceback() used by tests. * Rename Include/tracemalloc.h to Include/cpython/tracemalloc.h
* gh-106316: Remove pytime.h header file (#106317)Victor Stinner2023-07-011-0/+266
| | | | | | | | | | | | | | | | | Remove the "cpython/pytime.h" header file: it only contained private functions. Move functions to the internal pycore_time.h header file. Move tests from _testcapi to _testinternalcapi. Rename also test methods to have the same name than tested C functions. No longer export these functions: * _PyTime_Add() * _PyTime_As100Nanoseconds() * _PyTime_FromMicrosecondsClamp() * _PyTime_FromTimespec() * _PyTime_FromTimeval() * _PyTime_GetPerfCounterWithInfo() * _PyTime_MulDiv()
* gh-104584: Baby steps towards generating and executing traces (#105924)Guido van Rossum2023-06-271-0/+7
| | | | | Added a new, experimental, tracing optimizer and interpreter (a.k.a. "tier 2"). This currently pessimizes, so don't use yet -- this is infrastructure so we can experiment with optimizing passes. To enable it, pass ``-Xuops`` or set ``PYTHONUOPS=1``. To get debug output, set ``PYTHONUOPSDEBUG=N`` where ``N`` is a debug level (0-4, where 0 is no debug output and 4 is excessively verbose). All of this code is likely to change dramatically before the 3.13 feature freeze. But this is a first step.
* GH-104584: Assorted fixes for the optimizer API. (GH-105683)Mark Shannon2023-06-191-0/+10
| | | | | | * Add test for long loops * Clear ENTER_EXECUTOR when deopting code objects.
* gh-104812: Run Pending Calls in any Thread (gh-104813)Eric Snow2023-06-131-1/+121
| | | For a while now, pending calls only run in the main thread (in the main interpreter). This PR changes things to allow any thread run a pending call, unless the pending call was explicitly added for the main thread to run.
* GH-104584: Plugin optimizer API (GH-105100)Mark Shannon2023-06-021-0/+18
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* gh-103295: fix stack overwrite on 32-bit in perf map test harness (#104811)Carl Meyer2023-05-231-4/+9
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* gh-103295: expose API for writing perf map files (#103546)gsallam2023-05-211-0/+27
| | | | | Co-authored-by: Aniket Panse <aniketpanse@fb.com> Co-authored-by: Gregory P. Smith <greg@krypto.org> Co-authored-by: Carl Meyer <carl@oddbird.net>
* gh-104615: don't make unsafe swaps in apply_static_swaps (#104620)Carl Meyer2023-05-181-3/+4
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* GH-96803: Document and test new unstable internal frame API functions ↵Mark Shannon2023-05-181-0/+36
| | | | | | (GH-104211) Weaken contract of PyUnstable_InterpreterFrame_GetCode to return PyObject*.
* gh-97933: (PEP 709) inline list/dict/set comprehensions (#101441)Carl Meyer2023-05-091-0/+2
| | | | Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
* gh-104240: return code unit metadata from codegen (#104300)Irit Katriel2023-05-091-1/+1
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* gh-104240: make _PyCompile_CodeGen support different compilation modes (#104241)Irit Katriel2023-05-071-3/+5
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* gh-99113: Add PyInterpreterConfig.own_gil (gh-104204)Eric Snow2023-05-051-0/+7
| | | | | We also add PyInterpreterState.ceval.own_gil to record if the interpreter actually has its own GIL. Note that for now we don't actually respect own_gil; all interpreters still share the one GIL. However, PyInterpreterState.ceval.own_gil does reflect PyInterpreterConfig.own_gil. That lie is a temporary one that we will fix when the GIL really becomes per-interpreter.
* gh-99113: Add Py_MOD_PER_INTERPRETER_GIL_SUPPORTED (gh-104205)Eric Snow2023-05-051-0/+1
| | | Here we are doing no more than adding the value for Py_mod_multiple_interpreters and using it for stdlib modules. We will start checking for it in gh-104206 (once PyInterpreterState.ceval.own_gil is added in gh-104204).
* gh-87092: Expose assembler to unit tests (#103988)Irit Katriel2023-05-011-1/+64
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* gh-101758: Add a Test For Single-Phase Init Modules in Multiple Interpreters ↵Eric Snow2023-02-151-0/+15
| | | | | | | (gh-101920) The test verifies the behavior of single-phase init modules when loaded in multiple interpreters. https://github.com/python/cpython/issues/101758
* GH-100997: fix refleak in `_testinternalcapi.c` (#101058)Kumar Aditya2023-01-161-0/+1
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