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* gh-81057: Move PyImport_Inittab to _PyRuntimeState (gh-99402)Eric Snow2022-11-121-2/+3
| | | | | We actually don't move PyImport_Inittab. Instead, we make a copy that we keep on _PyRuntimeState and use only that after Py_Initialize(). We also prevent folks from modifying PyImport_Inittab (the best we can) after that point. https://github.com/python/cpython/issues/81057
* gh-99300: Use Py_NewRef() in Python/ directory (#99317)Victor Stinner2022-11-101-21/+10
| | | | | | Replace Py_INCREF() and Py_XINCREF() with Py_NewRef() and Py_XNewRef() in C files of the Python/ directory. Update Parser/asdl_c.py to regenerate Python/Python-ast.c.
* GH-98686: Quicken everything (GH-98687)Brandt Bucher2022-11-021-13/+0
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* gh-96143: Improve perf profiler docs (#96445)Erlend E. Aasland2022-10-271-6/+8
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* gh-98417: Store int_max_str_digits on the Interpreter State (GH-98418)Eric Snow2022-10-191-2/+2
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* GH-91079: Decouple C stack overflow checks from Python recursion checks. ↵Mark Shannon2022-10-051-1/+1
| | | | (GH-96510)
* gh-97670: Remove sys.getdxp() and analyze_dxp.py script (#97671)Victor Stinner2022-10-041-8/+0
| | | | | | | Remove the sys.getdxp() function and the Tools/scripts/analyze_dxp.py script. DXP stands for "dynamic execution pairs". They were related to DYNAMIC_EXECUTION_PROFILE and DXPAIRS macros which have been removed in Python 3.11. Python can now be built with "./configure --enable-pystats" to gather statistics on Python opcodes.
* gh-96512: Move int_max_str_digits setting to PyConfig (#96944)Gregory P. Smith2022-10-031-3/+3
| | | | | | | | | | | It had to live as a global outside of PyConfig for stable ABI reasons in the pre-3.12 backports. This removes the `_Py_global_config_int_max_str_digits` and gets rid of the equivalent field in the internal `struct _is PyInterpreterState` as code can just use the existing nested config struct within that. Adds tests to verify unique settings and configs in subinterpreters.
* gh-89545: Updates platform module to use new internal _wmi module on Windows ↵Steve Dower2022-09-071-30/+63
| | | | to directly query OS properties (GH-96289)
* gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96499)Gregory P. Smith2022-09-021-1/+45
| | | | | | | | | | | | | | | | Integer to and from text conversions via CPython's bignum `int` type is not safe against denial of service attacks due to malicious input. Very large input strings with hundred thousands of digits can consume several CPU seconds. This PR comes fresh from a pile of work done in our private PSRT security response team repo. Signed-off-by: Christian Heimes [Red Hat] <christian@python.org> Tons-of-polishing-up-by: Gregory P. Smith [Google] <greg@krypto.org> Reviews via the private PSRT repo via many others (see the NEWS entry in the PR). <!-- gh-issue-number: gh-95778 --> * Issue: gh-95778 <!-- /gh-issue-number --> I wrote up [a one pager for the release managers](https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7Y/edit#). Much of that text wound up in the Issue. Backports PRs already exist. See the issue for links.
* gh-96143: Allow Linux perf profiler to see Python calls (GH-96123)Pablo Galindo Salgado2022-08-301-0/+77
| | | | | | | :warning: :warning: Note for reviewers, hackers and fellow systems/low-level/compiler engineers :warning: :warning: If you have a lot of experience with this kind of shenanigans and want to improve the **first** version, **please make a PR against my branch** or **reach out by email** or **suggest code changes directly on GitHub**. If you have any **refinements or optimizations** please, wait until the first version is merged before starting hacking or proposing those so we can keep this PR productive.
* GH-93503: Add thread-specific APIs to set profiling and tracing functions in ↵Pablo Galindo Salgado2022-08-241-0/+61
| | | | | | | | | | | | | | | | | the C-API (#93504) * gh-93503: Add APIs to set profiling and tracing functions in all threads in the C-API * Use a separate API * Fix NEWS entry * Add locks around the loop * Document ignoring exceptions * Use the new APIs in the sys module * Update docs
* gh-95853: Add script to automate WASM build (GH-95828)Christian Heimes2022-08-131-3/+7
| | | | | | | | | | | | Automate WASM build with a new Python script. The script provides several build profiles with configure flags for Emscripten flavors and WASI. The script can detect and use Emscripten SDK and WASI SDK from default locations or env vars. ``configure`` now detects Node arguments and creates HOSTRUNNER arguments for Node 16. It also sets correct arguments for ``wasm64-emscripten``. Co-authored-by: Brett Cannon <brett@python.org>
* gh-94673: Add _PyStaticType_InitBuiltin() (#95152)Eric Snow2022-07-251-23/+18
| | | | | | | | | | | | This is the first of several precursors to storing tp_subclasses (and tp_weaklist) on the interpreter state for static builtin types. We do the following: * add `_PyStaticType_InitBuiltin()` * add `_Py_TPFLAGS_STATIC_BUILTIN` * set it on all static builtin types in `_PyStaticType_InitBuiltin()` * shuffle some code around to be able to use _PyStaticType_InitBuiltin() * rename `_PyStructSequence_InitType()` to `_PyStructSequence_InitBuiltinWithFlags()` * add `_PyStructSequence_InitBuiltin()`.
* gh-91348: Restore frame argument to sys._getframe audit event (GH-94928)Steve Dower2022-07-171-5/+7
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* GH-94262: Don't create frame objects for frames that aren't yet complete. ↵Mark Shannon2022-07-011-3/+11
| | | | (GH-94371)
* GH-93841: Allow stats to be turned on and off, cleared and dumped at ↵Mark Shannon2022-06-211-0/+66
| | | | runtime. (GH-93843)
* gh-93937, C API: Move PyFrame_GetBack() to Python.h (#93938)Victor Stinner2022-06-191-1/+1
| | | | | | | | | | | | | | | | Move the follow functions and type from frameobject.h to pyframe.h, so the standard <Python.h> provide frame getter functions: * PyFrame_Check() * PyFrame_GetBack() * PyFrame_GetBuiltins() * PyFrame_GetGenerator() * PyFrame_GetGlobals() * PyFrame_GetLasti() * PyFrame_GetLocals() * PyFrame_Type Remove #include "frameobject.h" from many C files. It's no longer needed.
* GH-93207: Remove HAVE_STDARG_PROTOTYPES configure check for stdarg.h (#93215)Kumar Aditya2022-05-271-8/+0
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* gh-88279: Fix compiler warning for using deprecated PySys_SetArgvEx (#92428)Serhiy Storchaka2022-05-071-0/+3
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* gh-57684: Add -P cmdline option and PYTHONSAFEPATH env var (#31542)Victor Stinner2022-05-051-1/+3
| | | | | | | | | | | | Add the -P command line option and the PYTHONSAFEPATH environment variable to not prepend a potentially unsafe path to sys.path. * Add sys.flags.safe_path flag. * Add PyConfig.safe_path member. * Programs/_bootstrap_python.c uses config.safe_path=0. * Update subprocess._optim_args_from_interpreter_flags() to handle the -P command line option. * Modules/getpath.py sets safe_path to 1 if a "._pth" file is present.
* gh-84461: Add sys._emscripten_info, improve docs and build (gh-91781)Christian Heimes2022-04-231-0/+118
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* bpo-35134: Remove the Include/code.h header file (GH-32385)Victor Stinner2022-04-071-1/+0
| | | | | | Remove the Include/code.h header file. C extensions should only include the main <Python.h> header file. Python.h includes directly Include/cpython/code.h instead.
* bpo-47000: Make `io.text_encoding()` respects UTF-8 mode (GH-32003)Inada Naoki2022-04-041-1/+4
| | | Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
* bpo-47164: Add _PyCFunction_CAST() macro (GH-32192)Victor Stinner2022-03-311-9/+9
| | | Use the macro in C files of the Python/ directory.
* bpo-42197: Don't create `f_locals` dictionary unless we actually need it. ↵Mark Shannon2022-03-251-3/+7
| | | | | | | | | | | (GH-32055) * `PyFrame_FastToLocalsWithError` and `PyFrame_LocalsToFast` are no longer called during profile and tracing. (Contributed by Fabio Zadrozny) * Make accesses to a frame's `f_locals` safe from C code, not relying on calls to `PyFrame_FastToLocals` or `PyFrame_LocalsToFast`. * Document new `PyFrame_GetLocals` C-API function.
* bpo-46850: Remove _PyEval_GetCoroutineOriginTrackingDepth() (GH-32018)Victor Stinner2022-03-211-4/+1
| | | | | | | | | | | | | | | Remove the private undocumented function _PyEval_GetCoroutineOriginTrackingDepth() from the C API. Call the public sys.get_coroutine_origin_tracking_depth() function instead. Change the internal function _PyEval_SetCoroutineOriginTrackingDepth(): * Remove the 'tstate' parameter; * Add return value and raises an exception if depth is negative; * No longer export the function: call the public sys.set_coroutine_origin_tracking_depth() function instead. Uniformize also function declarations in pycore_ceval.h.
* bpo-46850: Remove _PyEval_SetAsyncGenFinalizer() (GH-32017)Victor Stinner2022-03-211-1/+1
| | | | | | | | | | | Remove the following private undocumented functions from the C API: * _PyEval_GetAsyncGenFirstiter() * _PyEval_GetAsyncGenFinalizer() * _PyEval_SetAsyncGenFirstiter() * _PyEval_SetAsyncGenFinalizer() Call the public sys.get_asyncgen_hooks() and sys.set_asyncgen_hooks() functions instead.
* bpo-46987: Remove _PySys_GetObjectId / _PySys_GetObjectId (GH-31835)Dong-hee Na2022-03-141-36/+0
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* bpo-46836: Rename InterpreterFrame to _PyInterpreterFrame (GH-31583)Victor Stinner2022-02-251-2/+2
| | | | | Rename also struct _interpreter_frame to struct _PyInterpreterFrame. Reduce risk of name conflicts if a project includes pycore_frame.h.
* bpo-45412: Add _PY_SHORT_FLOAT_REPR macro (GH-31171)Victor Stinner2022-02-231-1/+2
| | | | | | | | | | Remove the HAVE_PY_SET_53BIT_PRECISION macro (moved to the internal C API). * Move HAVE_PY_SET_53BIT_PRECISION macro to pycore_pymath.h. * Replace PY_NO_SHORT_FLOAT_REPR macro with _PY_SHORT_FLOAT_REPR macro which is always defined. gcc -Wundef emits a warning when using _PY_SHORT_FLOAT_REPR but the macro is not defined, if pycore_pymath.h include was forgotten.
* bpo-46765: Replace Locally Cached Strings with Statically Initialized ↵Eric Snow2022-02-231-38/+13
| | | | | Objects (gh-31366) https://bugs.python.org/issue46765
* bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized ↵Eric Snow2022-02-081-39/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | global objects. (gh-30928) We're no longer using _Py_IDENTIFIER() (or _Py_static_string()) in any core CPython code. It is still used in a number of non-builtin stdlib modules. The replacement is: PyUnicodeObject (not pointer) fields under _PyRuntimeState, statically initialized as part of _PyRuntime. A new _Py_GET_GLOBAL_IDENTIFIER() macro facilitates lookup of the fields (along with _Py_GET_GLOBAL_STRING() for non-identifier strings). https://bugs.python.org/issue46541#msg411799 explains the rationale for this change. The core of the change is in: * (new) Include/internal/pycore_global_strings.h - the declarations for the global strings, along with the macros * Include/internal/pycore_runtime_init.h - added the static initializers for the global strings * Include/internal/pycore_global_objects.h - where the struct in pycore_global_strings.h is hooked into _PyRuntimeState * Tools/scripts/generate_global_objects.py - added generation of the global string declarations and static initializers I've also added a --check flag to generate_global_objects.py (along with make check-global-objects) to check for unused global strings. That check is added to the PR CI config. The remainder of this change updates the core code to use _Py_GET_GLOBAL_IDENTIFIER() instead of _Py_IDENTIFIER() and the related _Py*Id functions (likewise for _Py_GET_GLOBAL_STRING() instead of _Py_static_string()). This includes adding a few functions where there wasn't already an alternative to _Py*Id(), replacing the _Py_Identifier * parameter with PyObject *. The following are not changed (yet): * stop using _Py_IDENTIFIER() in the stdlib modules * (maybe) get rid of _Py_IDENTIFIER(), etc. entirely -- this may not be doable as at least one package on PyPI using this (private) API * (maybe) intern the strings during runtime init https://bugs.python.org/issue46541
* bpo-46072: Merge dxpairs into py_stats. (GH-31197)Mark Shannon2022-02-071-2/+2
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* bpo-46417: _curses uses PyStructSequence_NewType() (GH-30736)Victor Stinner2022-01-211-1/+1
| | | | | | | | The _curses module now creates its ncurses_version type as a heap type using PyStructSequence_NewType(), rather than using a static type. * Move _PyStructSequence_FiniType() definition to pycore_structseq.h. * test.pythoninfo: log curses.ncurses_version.
* bpo-46417: Finalize structseq types at exit (GH-30645)Victor Stinner2022-01-211-0/+15
| | | | | | | | | | | | | | | | | | Add _PyStructSequence_FiniType() and _PyStaticType_Dealloc() functions to finalize a structseq static type in Py_Finalize(). Currrently, these functions do nothing if Python is built in release mode. Clear static types: * AsyncGenHooksType: sys.set_asyncgen_hooks() * FlagsType: sys.flags * FloatInfoType: sys.float_info * Hash_InfoType: sys.hash_info * Int_InfoType: sys.int_info * ThreadInfoType: sys.thread_info * UnraisableHookArgsType: sys.unraisablehook * VersionInfoType: sys.version * WindowsVersionType: sys.getwindowsversion()
* bpo-46328: Add sys.exception() (GH-30514)Irit Katriel2022-01-131-1/+25
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* bpo-45582: Fix test_embed failure during a PGO build on Windows (GH-30014)neonene2021-12-101-0/+2
| | | This defines VPATH differently in PGO instrumentation builds, to account for a different default output directory. It also adds sys._vpath on Windows to make the value available to sysconfig so that it can be used in tests.
* bpo-45947: Place dict and values pointer at fixed (negative) offset just ↵Mark Shannon2021-12-071-4/+1
| | | | | | | | | | | | | | | | | | | before GC header. (GH-29879) * Place __dict__ immediately before GC header for plain Python objects. * Fix up lazy dict creation logic to use managed dict pointers. * Manage values pointer, placing them directly before managed dict pointers. * Convert hint-based load/store attr specialization target managed dict classes. * Specialize LOAD_METHOD for managed dict objects. * Remove unsafe _PyObject_GC_Calloc function. * Remove unsafe _PyObject_GC_Malloc() function. * Add comment explaning use of Py_TPFLAGS_MANAGED_DICT.
* bpo-45711: use exc_value instead of exc_type to determine if exc_info is ↵Irit Katriel2021-11-251-6/+1
| | | | valid. Add more assertions. (GH-29627)
* bpo-45753: Make recursion checks more efficient. (GH-29524)Mark Shannon2021-11-161-11/+5
| | | | * Uses recursion remaining, instead of recursion depth to speed up check against recursion limit.
* bpo-45637: Store the frame pointer in the cframe (GH-29267)Mark Shannon2021-10-281-1/+1
| | | * Rename 'frame' to 'current_frame'
* bpo-43760: Add PyThreadState_EnterTracing() (GH-28542)Victor Stinner2021-10-151-8/+4
| | | | | | | | | | Add PyThreadState_EnterTracing() and PyThreadState_LeaveTracing() functions to the limited C API to suspend and resume tracing and profiling. Add an unit test on the PyThreadState C API to _testcapi. Add also internal _PyThreadState_DisableTracing() and _PyThreadState_ResetTracing().
* bpo-45482: Rename namespaceobject.h to pycore_namespace.h (GH-28975)Victor Stinner2021-10-151-0/+1
| | | | | | | | | Rename Include/namespaceobject.h to Include/internal/pycore_namespace.h. The _testmultiphase extension is now built with the Py_BUILD_CORE_MODULE macro defined to access _PyNamespace_Type. object.c: remove unused "pycore_context.h" include.
* bpo-45439: Move _PyObject_CallNoArgs() to pycore_call.h (GH-28895)Victor Stinner2021-10-121-3/+4
| | | | | | | * Move _PyObject_CallNoArgs() to pycore_call.h (internal C API). * _ssl, _sqlite and _testcapi extensions now call the public PyObject_CallNoArgs() function, rather than _PyObject_CallNoArgs(). * _lsprof extension is now built with Py_BUILD_CORE_MODULE macro defined to get access to internal _PyObject_CallNoArgs().
* bpo-45439: Rename _PyObject_CallNoArg() to _PyObject_CallNoArgs() (GH-28891)Victor Stinner2021-10-111-1/+1
| | | | | Fix typo in the private _PyObject_CallNoArg() function name: rename it to _PyObject_CallNoArgs() to be consistent with the public function PyObject_CallNoArgs().
* bpo-43760: Check for tracing using 'bitwise or' instead of branch in ↵Mark Shannon2021-10-051-2/+2
| | | | dispatch. (GH-28723)
* bpo-45211: Remember the stdlib dir during startup. (gh-28586)Eric Snow2021-09-281-0/+8
| | | | | During runtime startup we figure out the stdlib dir but currently throw that information away. This change preserves it and exposes it via PyConfig.stdlib_dir, _Py_GetStdlibDir(), and sys._stdlib_dir. https://bugs.python.org/issue45211
* bpo-44590: Lazily allocate frame objects (GH-27077)Mark Shannon2021-07-261-9/+7
| | | | | | | | | | | | | | * Convert "specials" array to InterpreterFrame struct, adding f_lasti, f_state and other non-debug FrameObject fields to it. * Refactor, calls pushing the call to the interpreter upward toward _PyEval_Vector. * Compute f_back when on thread stack, only filling in value when frame object outlives stack invocation. * Move ownership of InterpreterFrame in generator from frame object to generator object. * Do not create frame objects for Python calls. * Do not create frame objects for generators.
* Remove sys._deactivate_opcache() now that is not needed (GH-27154)Pablo Galindo Salgado2021-07-151-17/+0
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