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* bpo-45020: Add -X frozen_modules=[on|off] to explicitly control use of ↵Eric Snow2021-09-141-2/+2
| | | | | | | frozen modules. (gh-28320) Currently we freeze several modules into the runtime. For each of these modules it is essential to bootstrapping the runtime that they be frozen. Any other stdlib module that we later freeze into the runtime is not essential. We can just as well import from the .py file. This PR lets users explicitly choose which should be used, with the new "-X frozen_modules=[on|off]" CLI flag. The default is "off" for now. https://bugs.python.org/issue45020
* bpo-44895: Introduce PYTHONDUMPREFSFILE variable for refcount dumping (GH-27767)Dong-hee Na2021-08-171-0/+20
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* bpo-44584: Deprecate PYTHONTHREADDEBUG env var (GH-27065)Victor Stinner2021-08-061-0/+5
| | | | | The threading debug (PYTHONTHREADDEBUG environment variable) is deprecated in Python 3.10 and will be removed in Python 3.12. This feature requires a debug build of Python.
* bpo-32280: Store _PyRuntime in a named section (GH-4802)Max Bélanger2021-06-031-2/+28
| | | | | This commit stores the _PyRuntime structure in a section of the same name. This allows a debugging or crash reporting tool to quickly locate this structure at runtime without requiring the symbol table. Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
* bpo-43680: _pyio.open() becomes a static method (GH-25354)Victor Stinner2021-04-121-3/+3
| | | | | | | | | | | The Python _pyio.open() function becomes a static method to behave as io.open() built-in function: don't become a bound method when stored as a class variable. It becomes possible since static methods are now callable in Python 3.10. Moreover, _pyio.OpenWrapper becomes a simple alias to _pyio.open. init_set_builtins_open() now sets builtins.open to io.open, rather than setting it to io.OpenWrapper, since OpenWrapper is now an alias to open in the io and _pyio modules.
* bpo-42923: Fix _Py_DumpExtensionModules() for NULL sysdict (GH-25262)Victor Stinner2021-04-071-6/+8
| | | Fix Py_FatalError() is called before interp->sysdict is set.
* bpo-43687: Py_Initialize() creates singletons earlier (GH-25147)Victor Stinner2021-04-021-44/+72
| | | | | Reorganize pycore_interp_init() to initialize singletons before the the first PyType_Ready() call. Fix an issue when Python is configured using --without-doc-strings.
* bpo-43244: Remove ast.h, asdl.h, Python-ast.h headers (GH-24933)Victor Stinner2021-03-231-3/+0
| | | | | | | | | | | | | | | | These functions were undocumented and excluded from the limited C API. Most names defined by these header files were not prefixed by "Py" and so could create names conflicts. For example, Python-ast.h defined a "Yield" macro which was conflict with the "Yield" name used by the Windows <winbase.h> header. Use the Python ast module instead. * Move Include/asdl.h to Include/internal/pycore_asdl.h. * Move Include/Python-ast.h to Include/internal/pycore_ast.h. * Remove ast.h header file. * pycore_symtable.h no longer includes Python-ast.h.
* bpo-43311: Create GIL autoTSSkey ealier (GH-24819)Victor Stinner2021-03-101-2/+9
| | | | | | At Python startup, call _PyGILState_Init() before PyInterpreterState_New() which calls _PyThreadState_GET(). When Python is built using --with-experimental-isolated-subinterpreters, _PyThreadState_GET() uses autoTSSkey.
* bpo-43390: Set SA_ONSTACK in PyOS_setsig (GH-24730)Gregory P. Smith2021-03-051-1/+4
| | | | | | | | This is friendlier to other in-process code that an extension module or embedding use could pull in such as CGo where tiny stacks are the norm and sigaltstack() has been used to provide for signal handlers. Without this, signals received by a process using tiny stacks may lead to stack overflow crashes.
* bpo-43268: Pass interp rather than tstate to internal functions (GH-24580)Victor Stinner2021-02-191-45/+44
| | | | | | | | | | | | | | | Pass the current interpreter (interp) rather than the current Python thread state (tstate) to internal functions which only use the interpreter. Modified functions: * _PyXXX_Fini() and _PyXXX_ClearFreeList() functions * _PyEval_SignalAsyncExc(), make_pending_calls() * _PySys_GetObject(), sys_set_object(), sys_set_object_id(), sys_set_object_str() * should_audit(), set_flags_from_config(), make_flags() * _PyAtExit_Call() * init_stdio_encoding() * etc.
* bpo-43268: _Py_IsMainInterpreter() now expects interp (GH-24577)Victor Stinner2021-02-191-5/+5
| | | | The _Py_IsMainInterpreter() function now expects interp rather than tstate.
* bpo-42955: Rename module_names to sys.stdlib_module_names (GH-24332)Victor Stinner2021-01-251-10/+10
| | | | * Rename _Py_module_names to _Py_stdlib_module_names. * Rename Python/module_names.h to Python/stdlib_module_names.h.
* bpo-42955: Add sys.modules_names (GH-24238)Victor Stinner2021-01-251-18/+41
| | | | Add sys.module_names, containing the list of the standard library module names.
* bpo-42923: _Py_DumpExtensionModules() ignores stdlib ext (GH-24254)Victor Stinner2021-01-191-10/+40
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* bpo-42923: Dump extension modules on fatal error (GH-24207)Victor Stinner2021-01-181-0/+41
| | | | | | | The Py_FatalError() function and the faulthandler module now dump the list of extension modules on a fatal error. Add _Py_DumpExtensionModules() and _PyModule_IsExtension() internal functions.
* bpo-42923: Py_FatalError() avoids fprintf() (GH-24242)Victor Stinner2021-01-181-36/+40
| | | | | * Replace buffered fprintf() with unbuffered _Py_write_noraise() in Py_FatalError(). * _Py_DumpHexadecimal() now accepts uintptr_t.
* bpo-42745: finalize_interp_types() calls _PyType_Fini() (GH-23953)Victor Stinner2020-12-261-3/+1
| | | | | Call _PyType_Fini() in subinterpreters. Fix reference leaks in subinterpreters.
* bpo-40521: Per-interpreter interned strings (GH-20085)Victor Stinner2020-12-261-0/+2
| | | | | | | | | | | Make the Unicode dictionary of interned strings compatible with subinterpreters. Remove the INTERN_NAME_STRINGS macro in typeobject.c: names are always now interned (even if EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined). _PyUnicode_ClearInterned() now uses PyDict_Next() to no longer allocate memory, to ensure that the interned dictionary is cleared.
* bpo-42745: Make the type cache per-interpreter (GH-23947)Victor Stinner2020-12-261-1/+1
| | | | | | | | | | | Make the type attribute lookup cache per-interpreter. Add private _PyType_InitCache() function, called by PyInterpreterState_New(). Continue to share next_version_tag between interpreters, since static types are still shared by interpreters. Remove MCACHE macro: the cache is no longer disabled if the EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.
* bpo-42639: Move atexit state to PyInterpreterState (GH-23763)Victor Stinner2020-12-151-12/+8
| | | | | | | | | * Add _PyAtExit_Call() function and remove pyexitfunc and pyexitmodule members of PyInterpreterState. The function logs atexit callback errors using _PyErr_WriteUnraisableMsg(). * Add _PyAtExit_Init() and _PyAtExit_Fini() functions. * Remove traverse, clear and free functions of the atexit module. Co-authored-by: Dong-hee Na <donghee.na@python.org>
* bpo-42639: atexit now logs callbacks exceptions (GH-23771)Victor Stinner2020-12-141-6/+3
| | | | | | | | | | | At Python exit, if a callback registered with atexit.register() fails, its exception is now logged. Previously, only some exceptions were logged, and the last exception was always silently ignored. Add _PyAtExit_Call() function and remove PyInterpreterState.atexit_func member. call_py_exitfuncs() now calls directly _PyAtExit_Call(). The atexit module must now always be built as a built-in module.
* bpo-42639: Cleanup atexitmodule.c (GH-23770)Victor Stinner2020-12-141-14/+2
| | | | | | | | | * Rename "atexitmodule_state" to "struct atexit_state". * Rename "modstate" to "state". * Rename "self" parameter to "module". * test_atexit uses textwrap.dedent(). * Remove _Py_PyAtExit() function: inline it into atexit_exec(). * PyInterpreterState: rename pyexitfunc to atexit_func, rename pyexitmodule to atexit_module.
* bpo-32381: Add _PyRun_AnyFileObject() (GH-23723)Victor Stinner2020-12-091-0/+15
| | | | | | | | | | pymain_run_file() no longer encodes the filename: pass the filename as an object to the new _PyRun_AnyFileObject() function. Add new private functions: * _PyRun_AnyFileObject() * _PyRun_InteractiveLoopObject() * _Py_FdIsInteractive()
* bpo-42599: Remove useless PyModule_GetWarningsModule() (GH-23691)Hai Shi2020-12-081-8/+0
| | | | Removed PyModule_GetWarningsModule() which is useless due to the _warnings module was converted to a builtin module in 2.6.
* bpo-1635741: Convert _imp to multi-phase init (GH-23378)Victor Stinner2020-11-181-8/+10
| | | | | | | | | | | | Convert the _imp extension module to the multi-phase initialization API (PEP 489). * Add _PyImport_BootstrapImp() which fix a bootstrap issue: import the _imp module before importlib is initialized. * Add create_builtin() sub-function, used by _imp_create_builtin(). * Initialize PyInterpreterState.import_func earlier, in pycore_init_builtins(). * Remove references to _PyImport_Cleanup(). This function has been renamed to finalize_modules() and moved to pylifecycle.c.
* bpo-40998: Address compiler warnings found by ubsan (GH-20929)Christian Heimes2020-11-181-4/+3
| | | | | Signed-off-by: Christian Heimes <christian@python.org> Automerge-Triggered-By: GH:tiran
* bpo-41686: Move _Py_RestoreSignals() to signalmodule.c (GH-23353)Victor Stinner2020-11-171-23/+0
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* bpo-41713: Remove PyOS_InitInterrupts() function (GH-23342)Victor Stinner2020-11-171-26/+3
| | | | | | | Remove the undocumented PyOS_InitInterrupts() C function. * Rename PyOS_InitInterrupts() to _PySignal_Init(). It now installs other signal handlers, not only SIGINT. * Rename PyOS_FiniInterrupts() to _PySignal_Fini()
* bpo-37205: time.time() cannot fail with fatal error (GH-23314)Victor Stinner2020-11-161-6/+0
| | | | | | | | | | | | | | | time.time(), time.perf_counter() and time.monotonic() functions can no longer fail with a Python fatal error, instead raise a regular Python exception on failure. Remove _PyTime_Init(): don't check system, monotonic and perf counter clocks at startup anymore. On error, _PyTime_GetSystemClock(), _PyTime_GetMonotonicClock() and _PyTime_GetPerfCounter() now silently ignore the error and return 0. They cannot fail with a Python fatal error anymore. Add py_mach_timebase_info() and win_perf_counter_frequency() sub-functions.
* bpo-42260: Initialize time and warnings earlier at startup (GH-23249)Victor Stinner2020-11-121-70/+50
| | | | | | | | | | * Call _PyTime_Init() and _PyWarnings_InitState() earlier during the Python initialization. * Inline _PyImportHooks_Init() into _PySys_InitCore(). * The _warnings initialization function no longer call _PyWarnings_InitState() to prevent resetting filters_version to 0. * _PyWarnings_InitState() now returns an int and no longer clear the state in case of error (it's done anyway at Python exit). * Rework init_importlib(), fix refleaks on errors.
* bpo-42260: Fix _PyConfig_Read() if compute_path_config=0 (GH-23220)Victor Stinner2020-11-101-1/+1
| | | | | | | | | | | | | | | | | | | Fix _PyConfig_Read() if compute_path_config=0: use values set by Py_SetPath(), Py_SetPythonHome() and Py_SetProgramName(). Add compute_path_config parameter to _PyConfig_InitPathConfig(). The following functions now return NULL if called before Py_Initialize(): * Py_GetExecPrefix() * Py_GetPath() * Py_GetPrefix() * Py_GetProgramFullPath() * Py_GetProgramName() * Py_GetPythonHome() These functions no longer automatically computes the Python Path Configuration. Moreover, Py_SetPath() no longer computes program_full_path.
* bpo-42260: Compute the path config in the main init (GH-23211)Victor Stinner2020-11-101-28/+31
| | | | | | | | | | | | | | | | | | | | | The path configuration is now computed in the "main" initialization. The core initialization no longer computes it. * Add _PyConfig_Read() function to read the configuration without computing the path configuration. * pyinit_core() no longer computes the path configuration: it is now computed by init_interp_main(). * The path configuration output members of PyConfig are now optional: * executable * base_executable * prefix * base_prefix * exec_prefix * base_exec_prefix * _PySys_UpdateConfig() now skips NULL strings in PyConfig. * _testembed: Rename test_set_config() to test_init_set_config() for consistency with other tests.
* bpo-42260: Add _PyInterpreterState_SetConfig() (GH-23158)Victor Stinner2020-11-041-4/+66
| | | | | | | | * Inline _PyInterpreterState_SetConfig(): replace it with _PyConfig_Copy(). * Add _PyErr_SetFromPyStatus() * Add _PyInterpreterState_GetConfigCopy() * Add a new _PyInterpreterState_SetConfig() function. * Add an unit which gets, modifies, and sets the config.
* bpo-42260: Main init modify sys.flags in-place (GH-23150)Victor Stinner2020-11-041-27/+18
| | | | | | | | | | | When Py_Initialize() is called twice, the second call now updates more sys attributes for the configuration, rather than only sys.argv. * Rename _PySys_InitMain() to _PySys_UpdateConfig(). * _PySys_UpdateConfig() now modifies sys.flags in-place, instead of creating a new flags object. * Remove old commented sys.flags flags (unbuffered and skip_first). * Add private _PySys_GetObject() function. * When Py_Initialize(), Py_InitializeFromConfig() and
* bpo-41796: Call _PyAST_Fini() earlier to fix a leak (GH-23131)Victor Stinner2020-11-031-8/+0
| | | | | | | | | | | | | | | Call _PyAST_Fini() on all interpreters, not only on the main interpreter. Also, call it ealier to fix a reference leak. Python types contain a reference to themselves in in their PyTypeObject.tp_mro member. _PyAST_Fini() must called before the last GC collection to destroy AST types. _PyInterpreterState_Clear() now calls _PyAST_Fini(). It now also calls _PyWarnings_Fini() on subinterpeters, not only on the main interpreter. Add an assertion in AST init_types() to ensure that the _ast module is no longer used after _PyAST_Fini() has been called.
* bpo-42208: Call GC collect earlier in PyInterpreterState_Clear() (GH-23044)Victor Stinner2020-10-301-6/+1
| | | | | | | | The last GC collection is now done before clearing builtins and sys dictionaries. Add also assertions to ensure that gc.collect() is no longer called after _PyGC_Fini(). Pass also the tstate to PyInterpreterState_Clear() to pass the correct tstate to _PyGC_CollectNoFail() and _PyGC_Fini().
* bpo-42208: Move _PyImport_Cleanup() to pylifecycle.c (GH-23040)Victor Stinner2020-10-301-3/+290
| | | | | Move _PyImport_Cleanup() to pylifecycle.c, rename it to finalize_modules(), split it (200 lines) into many smaller sub-functions and cleanup the code.
* bpo-42208: Pass tstate to _PyGC_CollectNoFail() (GH-23038)Victor Stinner2020-10-301-2/+2
| | | | | | | | | | | | Move private _PyGC_CollectNoFail() to the internal C API. Remove the private _PyGC_CollectIfEnabled() which was just an alias to the public PyGC_Collect() function since Python 3.8. Rename functions: * collect() => gc_collect_main() * collect_with_callback() => gc_collect_with_callback() * collect_generations() => gc_collect_generations()
* bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and ↵Serhiy Storchaka2020-10-261-3/+9
| | | | | | | | | | | _PyDict_GetItemId. (GH-22648) These functions are considered not safe because they suppress all internal errors and can return wrong result. PyDict_GetItemString and _PyDict_GetItemId can also silence current exception in rare cases. Remove no longer used _PyDict_GetItemId. Add _PyDict_ContainsId and rename _PyDict_Contains into _PyDict_Contains_KnownHash.
* bpo-41631: _ast module uses again a global state (#21961)Victor Stinner2020-09-151-0/+6
| | | | | | | | | | | | | | | | | Partially revert commit ac46eb4ad6662cf6d771b20d8963658b2186c48c: "bpo-38113: Update the Python-ast.c generator to PEP384 (gh-15957)". Using a module state per module instance is causing subtle practical problems. For example, the Mercurial project replaces the __import__() function to implement lazy import, whereas Python expected that "import _ast" always return a fully initialized _ast module. Add _PyAST_Fini() to clear the state at exit. The _ast module has no state (set _astmodule.m_size to 0). Remove astmodule_traverse(), astmodule_clear() and astmodule_free() functions.
* bpo-1635741: Explict GC collect after PyInterpreterState_Clear() (GH-21902)Hai Shi2020-08-171-4/+2
| | | | Fix a reference cycle by triggering an explicit GC collection after calling PyInterpreterState_Clear().
* bpo-41162: Clear audit hooks later during finalization (GH-21222)Konge2020-07-031-3/+7
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* bpo-1635741: Release Unicode interned strings at exit (GH-21269)Victor Stinner2020-07-011-0/+1
| | | | | | | * PyUnicode_InternInPlace() now ensures that interned strings are ready. * Add _PyUnicode_ClearInterned(). * Py_Finalize() now releases Unicode interned strings: call _PyUnicode_ClearInterned().
* bpo-40521: Cleanup finalize_interp_types() (GH-21265)Victor Stinner2020-07-011-2/+2
| | | | Remove the now unused is_main_interp parameter of finalize_interp_types().
* bpo-40521: Optimize PyBytes_FromStringAndSize(str, 0) (GH-21142)Victor Stinner2020-06-251-0/+5
| | | | | | | | | | | | | | | | Always create the empty bytes string singleton. Optimize PyBytes_FromStringAndSize(str, 0): it no longer has to check if the empty string singleton was created or not, it is always available. Add functions: * _PyBytes_Init() * bytes_get_empty(), bytes_new_empty() * bytes_create_empty_string_singleton() * unicode_create_empty_string_singleton() _Py_unicode_state: rename empty structure member to empty_string.
* bpo-40521: Always create the empty tuple singleton (GH-21116)Victor Stinner2020-06-241-1/+8
| | | | | | | | | | | Py_InitializeFromConfig() now always creates the empty tuple singleton as soon as possible. Optimize PyTuple_New(0): it no longer has to check if the empty tuple was created or not, it is always creatd. * Add tuple_create_empty_tuple_singleton() function. * Add tuple_get_empty() function. * Remove state parameter of tuple_alloc().
* bpo-40521: Make empty Unicode string per interpreter (GH-21096)Victor Stinner2020-06-231-5/+3
| | | Each interpreter now has its own empty Unicode string singleton.
* bpo-40521: Make MemoryError free list per interpreter (GH-21086)Victor Stinner2020-06-231-5/+2
| | | | | | | Each interpreter now has its own MemoryError free list: it is not longer shared by all interpreters. Add _Py_exc_state structure and PyInterpreterState.exc_state member. Move also errnomap into _Py_exc_state.
* bpo-40521: Empty frozenset is no longer a singleton (GH-21085)Raymond Hettinger2020-06-231-1/+0
| | | | | | | | | * Revert "bpo-40521: Make the empty frozenset per interpreter (GH-21068)" This reverts commit 261cfedf7657a515e04428bba58eba2a9bb88208. * bpo-40521: Empty frozensets are no longer singletons * Complete the removal of the frozenset singleton
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