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* GH-91719: Make MSVC generate somewhat faster switch code (#91718)Guido van Rossum2022-04-211-1/+1
| | | | | | | | | | | Apparently a switch on an 8-bit quantity where all cases are present generates a more efficient jump (doing only one indexed memory load instead of two). So we make opcode and use_tracing uint8_t, and generate a macro full of extra `case NNN:` lines for all unused opcodes. See https://github.com/faster-cpython/ideas/issues/321#issuecomment-1103263673
* Revert "bpo-46850: Move _PyEval_EvalFrameDefault() to internal C API ↵Victor Stinner2022-04-061-0/+10
| | | | | | | | | | | (GH-32052)" (GH-32343) * Revert "bpo-46850: Move _PyInterpreterState_SetEvalFrameFunc() to internal C API (GH-32054)" This reverts commit f877b40e3f7e0d97878884d80fbec879a85ab7e8. * Revert "bpo-46850: Move _PyEval_EvalFrameDefault() to internal C API (GH-32052)" This reverts commit b9a5522dd952125a99ff554f01f311cae25f5a91.
* bpo-46850: Move _PyInterpreterState_SetEvalFrameFunc() to internal C API ↵Victor Stinner2022-04-011-10/+0
| | | | | | | | | | | (GH-32054) Move the private _PyFrameEvalFunction type, and private _PyInterpreterState_GetEvalFrameFunc() and _PyInterpreterState_SetEvalFrameFunc() functions to the internal C API. The _PyFrameEvalFunction callback function type now uses the _PyInterpreterFrame type which is part of the internal C API. Update the _PyFrameEvalFunction documentation.
* bpo-47045: Remove `f_state` field (GH-31963)Mark Shannon2022-03-221-0/+1
| | | | | * Remove the f_state field from _PyInterpreterFrame * Make ownership of the frame explicit, replacing the is_generator field with an owner field.
* bpo-45431: Rename CFrame to _PyCFrame in the C API (GH-31584)Victor Stinner2022-02-281-6/+8
| | | | | | Rename also struct _cframe to struct _PyCFrame. Add a comment suggesting using public functions rather than using directly the private _PyCFrame structure.
* 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-46748: Don't import <stdbool.h> in public headers (GH-31553)Petr Viktorin2022-02-251-3/+1
| | | | | | | <stdbool.h> is the standard/modern way to define embedd/extends Python free to define bool, true and false, but there are existing applications that use slightly different redefinitions, which fail if the header is included. It's OK to use stdbool outside the public headers, though. https://bugs.python.org/issue46748
* bpo-45459: C API uses type names rather than structure names (GH-31528)Victor Stinner2022-02-241-9/+8
| | | | Thanks to the new pytypedefs.h, it becomes to use type names like PyObject rather like structure names like "struct _object".
* bpo-45953: Preserve backward compatibility on some PyThreadState field ↵Eric Snow2022-02-011-2/+5
| | | | | names. (GH-31038) The gevent project is using the two `PyThreadState` fields I renamed in gh-30590. This PR fixes the names. See #msg412046.
* bpo-45953: Statically initialize all the PyThreadState fields we can. (gh-30590)Eric Snow2022-01-141-13/+29
| | | https://bugs.python.org/issue45953
* bpo-45953: Statically allocate the main interpreter (and initial thread ↵Eric Snow2022-01-121-1/+9
| | | | | | | | | state). (gh-29883) Previously, the main interpreter was allocated on the heap during runtime initialization. Here we instead embed it into _PyRuntimeState, which means it is statically allocated as part of the _PyRuntime global. The same goes for the initial thread state (of each interpreter, including the main one). Consequently there are fewer allocations during runtime/interpreter init, fewer possible failures, and better memory locality. FYI, this also helps efforts to consolidate globals, which in turns helps work on subinterpreter isolation. https://bugs.python.org/issue45953
* bpo-45711: Remove type and traceback from exc_info (GH-30122)Irit Katriel2021-12-171-1/+1
| | | | | | | | * Do not PUSH/POP traceback or type to the stack as part of exc_info * Remove exc_traceback and exc_type from _PyErr_StackItem * Add to what's new, because this change breaks things like Cython
* bpo-46008: Move Py*State init into distinct functions. (gh-29977)Eric Snow2021-12-081-0/+6
| | | | | Previously, basic initialization of PyInterprterState happened in PyInterpreterState_New() (along with allocation and adding the new interpreter to the runtime state). This prevented us from initializing interpreter states that were allocated separately (e.g. statically or in a free list). We've addressed that here by factoring out a separate function just for initialization. We've done the same for PyThreadState. _PyRuntimeState was sorted out when we added it since _PyRuntime is statically allocated. However, here we update the existing init code to line up with the functions for PyInterpreterState and PyThreadState. https://bugs.python.org/issue46008
* bpo-39026: Fix Python.h when building with Xcode (GH-29488)Victor Stinner2021-11-231-2/+0
| | | | Fix Python.h to build C extensions with Xcode: remove a relative include from Include/cpython/pystate.h.
* bpo-45753: Make recursion checks more efficient. (GH-29524)Mark Shannon2021-11-161-2/+2
| | | | * 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 Shannon2021-10-281-2/+2
| | | * Rename 'frame' to 'current_frame'
* bpo-43760: Add PyThreadState_EnterTracing() (GH-28542)Victor Stinner2021-10-151-0/+7
| | | | | | | | | | 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().
* Fix typos in the Include directory (GH-28745)Christian Clauss2021-10-061-1/+1
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* bpo-44590: Lazily allocate frame objects (GH-27077)Mark Shannon2021-07-261-2/+2
| | | | | | | | | | | | | | * 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.
* bpo-44348: Move trace-info to thread-state (GH-26623)Mark Shannon2021-06-101-0/+6
| | | | | * Move trace-info to thread state. * Correct output for pdb when turning on tracing in middle of line
* bpo-43879: Add native_thread_id field to PyThreadState (GH-25458)Gabriele N. Tornetta2021-05-261-0/+6
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* bpo-44032: Move data stack to thread from FrameObject. (GH-26076)Mark Shannon2021-05-211-0/+9
| | | | | | | | | | | | | | | | * Remove 'zombie' frames. We won't need them once we are allocating fixed-size frames. * Add co_nlocalplus field to code object to avoid recomputing size of locals + frees + cells. * Move locals, cells and freevars out of frame object into separate memory buffer. * Use per-threadstate allocated memory chunks for local variables. * Move globals and builtins from frame object to per-thread stack. * Move (slow) locals frame object to per-thread stack. * Move internal frame functions to internal header.
* bpo-43760: Speed up check for tracing in interpreter dispatch (#25276)Mark Shannon2021-04-131-1/+21
| | | | | | | | | * Remove redundant tracing_possible field from interpreter state. * Move 'use_tracing' from tstate onto C stack, for fastest possible checking in dispatch logic. * Add comments stressing the importance stack discipline when dealing with CFrames. * Add NEWS
* bpo-42500: Fix recursion in or after except (GH-23568)Mark Shannon2020-12-021-2/+1
| | | * Use counter, rather boolean state when handling soft overflows.
* bpo-42260: Add _PyInterpreterState_SetConfig() (GH-23158)Victor Stinner2020-11-041-0/+30
| | | | | | | | * 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-41435: Add sys._current_exceptions() function (GH-21689)Julien Danjou2020-11-021-0/+5
| | | | | | This adds a new function named sys._current_exceptions() which is equivalent ot sys._current_frames() except that it returns the exceptions currently handled by other threads. It is equivalent to calling sys.exc_info() for each running thread.
* bpo-41936. Remove macros Py_ALLOW_RECURSION/Py_END_ALLOW_RECURSION (GH-22552)Serhiy Storchaka2020-10-051-2/+0
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* bpo-39583: Remove superfluous "extern C" bits from Include/cpython/*.h ↵Skip Montanaro2020-06-011-8/+0
| | | | (GH-18413)
* bpo-40421: Add pyframe.h header file (GH-19755)Victor Stinner2020-04-281-3/+3
| | | | | | | | | | Add a new separated pyframe.h header file of the PyFrame public C API: it is included by Python.h. Add PyFrame_GetLineNumber() to the limited C API. Replace "struct _frame" with "PyFrameObject" in header files. PyFrameObject is now defined as struct _frame by pyframe.h which is included early enough in Python.h.
* bpo-40268: Rename _PyInterpreterState_GET_UNSAFE() (GH-19509)Victor Stinner2020-04-141-1/+1
| | | | | | | Rename _PyInterpreterState_GET_UNSAFE() to _PyInterpreterState_GET() for consistency with _PyThreadState_GET() and to have a shorter name (help to fit into 80 columns). Add also "assert(tstate != NULL);" to the function.
* bpo-40268: Add _PyInterpreterState_GetConfig() (GH-19492)Victor Stinner2020-04-131-0/+7
| | | | | | | | Don't access PyInterpreterState.config member directly anymore, but use new functions: * _PyInterpreterState_GetConfig() * _PyInterpreterState_SetConfig() * _Py_GetConfig()
* bpo-39947: Add _PyThreadState_GetDict() function (GH-19160)Victor Stinner2020-03-251-0/+2
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* bpo-20526: Fix PyThreadState_Clear(): don't decref frame (GH-19120)Victor Stinner2020-03-241-0/+1
| | | | | | | | PyThreadState.frame is a borrowed reference, not a strong reference: PyThreadState_Clear() must not call Py_CLEAR(tstate->frame). Remove test_threading.test_warnings_at_exit(): we cannot warranty that the Python thread state of daemon threads is cleared in a reliable way during Python shutdown.
* bpo-39946: Remove _PyThreadState_GetFrame (GH-19094)Victor Stinner2020-03-201-2/+0
| | | | | Remove _PyRuntime.getframe hook and remove _PyThreadState_GetFrame macro which was an alias to _PyRuntime.getframe. They were only exposed by the internal C API. Remove also PyThreadFrameGetter type.
* bpo-39947: Add PyInterpreterState_Get() function (GH-18979)Victor Stinner2020-03-131-7/+2
| | | | | | * Rename _PyInterpreterState_Get() to PyInterpreterState_Get() and move it the limited C API. * Add _PyInterpreterState_Get() alias to PyInterpreterState_Get() for backward compatibility with Python 3.8.
* bpo-38500: Add _PyInterpreterState_SetEvalFrameFunc() (GH-17340)Victor Stinner2020-03-121-0/+10
| | | | | | | | | | | | PyInterpreterState.eval_frame function now requires a tstate (Python thread state) parameter. Add private functions to the C API to get and set the frame evaluation function: * Add tstate parameter to _PyFrameEvalFunction function type. * Add _PyInterpreterState_GetEvalFrameFunc() and _PyInterpreterState_SetEvalFrameFunc() functions. * Add tstate parameter to _PyEval_EvalFrameDefault().
* bpo-38858: _PyImport_FixupExtensionObject() handles subinterpreters (GH-17350)Victor Stinner2019-11-221-1/+0
| | | | | If _PyImport_FixupExtensionObject() is called from a subinterpreter, leave extensions unchanged and don't copy the module dictionary into def->m_base.m_copy.
* bpo-38266: Revert bpo-37878: Make PyThreadState_DeleteCurrent() Internal ↵Joannah Nanjekye2019-10-041-0/+1
| | | | | (GH-16558) Revert the removal of PyThreadState_DeleteCurrent() with documentation.
* bpo-36710: Add tstate parameter in import.c (GH-14218)Victor Stinner2019-06-191-1/+0
| | | | | | | | | | | | | * Add 'tstate' parameter to many internal import.c functions. * _PyImportZip_Init() now gets 'tstate' parameter rather than 'interp'. * Add 'interp' parameter to _PyState_ClearModules() and rename it to _PyInterpreterState_ClearModules(). * Move private _PyImport_FindBuiltin() to the internal C API; add 'tstate' parameter to it. * Remove private _PyImport_AddModuleObject() from the C API: use public PyImport_AddModuleObject() instead. * Remove private _PyImport_FindExtensionObjectEx() from the C API: use private _PyImport_FindExtensionObject() instead.
* Revert "bpo-36818: Add PyInterpreterState.runtime field. (gh-13129)" (GH-13795)Victor Stinner2019-06-041-3/+3
| | | This reverts commit 396e0a8d9dc65453cb9d53500d0a620602656cfe.
* bpo-36818: Add PyInterpreterState.runtime field. (gh-13129)Eric Snow2019-06-011-3/+3
| | | https://bugs.python.org/issue36818
* bpo-36933: Remove sys.set_coroutine_wrapper (marked for removal in 3.8) ↵Matthias Bussonnier2019-05-281-3/+0
| | | | | | | | | | (GH-13577) It has been documented as deprecated and to be removed in 3.8; From a comment on another thread – which I can't find ; leave get_coro_wrapper() for now, but always return `None`. https://bugs.python.org/issue36933
* bpo-36763: Implement the PEP 587 (GH-13592)Victor Stinner2019-05-271-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add a whole new documentation page: "Python Initialization Configuration" * PyWideStringList_Append() return type is now PyStatus, instead of int * PyInterpreterState_New() now calls PyConfig_Clear() if PyConfig_InitPythonConfig() fails. * Rename files: * Python/coreconfig.c => Python/initconfig.c * Include/cpython/coreconfig.h => Include/cpython/initconfig.h * Include/internal/: pycore_coreconfig.h => pycore_initconfig.h * Rename structures * _PyCoreConfig => PyConfig * _PyPreConfig => PyPreConfig * _PyInitError => PyStatus * _PyWstrList => PyWideStringList * Rename PyConfig fields: * use_module_search_paths => module_search_paths_set * module_search_path_env => pythonpath_env * Rename PyStatus field: _func => func * PyInterpreterState: rename core_config field to config * Rename macros and functions: * _PyCoreConfig_SetArgv() => PyConfig_SetBytesArgv() * _PyCoreConfig_SetWideArgv() => PyConfig_SetArgv() * _PyCoreConfig_DecodeLocale() => PyConfig_SetBytesString() * _PyInitError_Failed() => PyStatus_Exception() * _Py_INIT_ERROR_TYPE_xxx enums => _PyStatus_TYPE_xxx * _Py_UnixMain() => Py_BytesMain() * _Py_ExitInitError() => Py_ExitStatusException() * _Py_PreInitializeFromArgs() => Py_PreInitializeFromBytesArgs() * _Py_PreInitializeFromWideArgs() => Py_PreInitializeFromArgs() * _Py_PreInitialize() => Py_PreInitialize() * _Py_RunMain() => Py_RunMain() * _Py_InitializeFromConfig() => Py_InitializeFromConfig() * _Py_INIT_XXX() => _PyStatus_XXX() * _Py_INIT_FAILED() => _PyStatus_EXCEPTION() * Rename 'err' PyStatus variables to 'status' * Convert RUN_CODE() macro to config_run_code() static inline function * Remove functions: * _Py_InitializeFromArgs() * _Py_InitializeFromWideArgs() * _PyInterpreterState_GetCoreConfig()
* bpo-36710: PyOS_AfterFork_Child() pass runtime parameter (GH-12936)Victor Stinner2019-04-241-1/+0
| | | | | | | | | The PyOS_AfterFork_Child() function now pass a 'runtime' parameter to subfunctions. * Fix _PyRuntimeState_ReInitThreads(): use the correct memory allocator * Add runtime parameter to _PyRuntimeState_ReInitThreads(), _PyGILState_Reinit() and _PyInterpreterState_DeleteExceptMain() * Move _PyGILState_Reinit() to the internal C API.
* bpo-36710: Add runtime parameter to _PyThreadState_Init() (GH-12935)Victor Stinner2019-04-241-2/+0
| | | | | | * Add 'runtime' parameter to _PyThreadState_Init() * Add 'gilstate' parameter to _PyGILState_NoteThreadState() * Move _PyThreadState_Init() and _PyThreadState_DeleteExcept() to the internal C API.
* bpo-36444: Remove _PyMainInterpreterConfig (GH-12571)Victor Stinner2019-03-271-23/+0
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* bpo-36097: Use only public C-API in the_xxsubinterpreters module (adding as ↵Eric Snow2019-03-151-0/+63
| | | | necessary). (gh-12359)
* Revert: bpo-33608: Factor out a private, per-interpreter ↵Victor Stinner2019-03-041-63/+0
| | | | | | | | | | | | | | | | | | | _Py_AddPendingCall(). (GH-11617) (GH-12159) * Revert "bpo-36097: Use only public C-API in the_xxsubinterpreters module (adding as necessary). (#12003)" This reverts commit bcfa450f210074e16feb761ae5b3e966a2532fcf. * Revert "bpo-33608: Simplify ceval's DISPATCH by hoisting eval_breaker ahead of time. (gh-12062)" This reverts commit bda918bf65a88560ec453aaba0758a9c0d49b449. * Revert "bpo-33608: Use _Py_AddPendingCall() in _PyCrossInterpreterData_Release(). (gh-12024)" This reverts commit b05b711a2cef6c6c381e01069dedac372e0b9fb2. * Revert "bpo-33608: Factor out a private, per-interpreter _Py_AddPendingCall(). (GH-11617)" This reverts commit ef4ac967e2f3a9a18330cc6abe14adb4bc3d0465.
* bpo-36097: Use only public C-API in the_xxsubinterpreters module (adding as ↵Eric Snow2019-03-011-0/+63
| | | | necessary). (#12003)
* bpo-36142: Exclude coreconfig.h from Py_LIMITED_API (GH-12111)Victor Stinner2019-03-011-0/+2
| | | | | | | | | The whole coreconfig.h header is now excluded from Py_LIMITED_API. Move functions definitions into a new internal pycore_coreconfig.h header. * Move Include/coreconfig.h to Include/cpython/coreconfig.h * coreconfig.h header is now excluded from Py_LIMITED_API * Move functions to pycore_coreconfig.h
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