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* bpo-45439: Move _PyObject_CallNoArgs() to pycore_call.h (GH-28895)Victor Stinner2021-10-121-4/+5
| | | | | | | * 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-45355: Use sizeof(_Py_CODEUNIT) instead of literal 2 for the size of the ↵Serhiy Storchaka2021-10-031-1/+1
| | | | code unit (GH-28711)
* Clean up initialization __class_getitem__ with Py_GenericAlias. (GH-28450)Serhiy Storchaka2021-09-191-1/+1
| | | | | The cast to PyCFunction is redundant. Overuse of redundant casts can hide actual bugs.
* bpo-44990: Change layout of evaluation frames. "Layout B" (GH-27933)Mark Shannon2021-08-251-7/+3
| | | Places the locals between the specials and stack. This is the more "natural" layout for a C struct, makes the code simpler and gives a slight speedup (~1%)
* bpo-44590: Lazily allocate frame objects (GH-27077)Mark Shannon2021-07-261-70/+195
| | | | | | | | | | | | | | * 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-42747: Remove Py_TPFLAGS_HAVE_AM_SEND and make ↵Petr Viktorin2021-07-231-6/+3
| | | | | | | | | | | | Py_TPFLAGS_HAVE_VERSION_TAG no-op (GH-27260) * Remove code that checks Py_TPFLAGS_HAVE_VERSION_TAG The field is always present in the type struct, as explained in the added comment. * Remove Py_TPFLAGS_HAVE_AM_SEND The flag is not needed, and since it was added in 3.10 it can be removed now.
* bpo-44530: Add co_qualname field to PyCodeObject (GH-26941)Gabriele N. Tornetta2021-07-071-1/+1
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* bpo-44032: Move data stack to thread from FrameObject. (GH-26076)Mark Shannon2021-05-211-6/+6
| | | | | | | | | | | | | | | | * 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-42800: Rename AUDIT_READ to PY_AUDIT_READ (GH-25736)Steve Dower2021-04-301-6/+6
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* bpo-42800: add audit hooks for f_code and tb_frame (GH-24182)Ryan Hileman2021-04-291-6/+6
| | | | | | | | | | Accessing the following attributes will now fire PEP 578 style audit hooks as ("object.__getattr__", obj, name): * PyTracebackObject: tb_frame * PyFrameObject: f_code * PyGenObject: gi_code, gi_frame * PyCoroObject: cr_code, cr_frame * PyAsyncGenObject: ag_code, ag_frame Add an AUDIT_READ attribute flag aliased to READ_RESTRICTED. Update obsolete flag documentation.
* bpo-43683: Handle generator entry in bytecode (GH-25138)Mark Shannon2021-04-061-21/+6
| | | | | | * Handle check for sending None to starting generator and coroutine into bytecode. * Document new bytecode and make it fail gracefully if mis-compiled.
* bpo-27129: Use instruction offsets, not byte offsets, in bytecode and ↵Mark Shannon2021-04-011-2/+2
| | | | | | | internally. (GH-25069) * Use instruction offset, rather than bytecode offset. Streamlines interpreter dispatch a bit, and removes most EXTENDED_ARGs for jumps. * Change some uses of PyCode_Addr2Line to PyFrame_GetLineNumber
* bpo-43268: Pass interp rather than tstate to internal functions (GH-24580)Victor Stinner2021-02-191-5/+5
| | | | | | | | | | | | | | | 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-42085: Introduce dedicated entry in PyAsyncMethods for sending values ↵Vladimir Matveev2020-11-101-31/+26
| | | | (#22780)
* Delete PyGen_Send (#22663)Vladimir Matveev2020-10-121-4/+20
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* bpo-41756: Add PyIter_Send function (#22443)Vladimir Matveev2020-10-101-7/+1
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* bpo-41756: Refactor gen_send_ex(). (GH-22330)Serhiy Storchaka2020-09-221-94/+99
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* bpo-41756: Introduce PyGen_Send C API (GH-22196)Vladimir Matveev2020-09-191-17/+48
| | | | | | | | | | | | | The new API allows to efficiently send values into native generators and coroutines avoiding use of StopIteration exceptions to signal returns. ceval loop now uses this method instead of the old "private" _PyGen_Send C API. This translates to 1.6x increased performance of 'await' calls in micro-benchmarks. Aside from CPython core improvements, this new API will also allow Cython to generate more efficient code, benefiting high-performance IO libraries like uvloop.
* bpo-40941: Unify implicit and explicit state in the frame and generator ↵Mark Shannon2020-07-171-23/+48
| | | | | | | objects into a single value. (GH-20803) * Merge gen and frame state variables into one. * Replace stack pointer with depth in PyFrameObject. Makes code easier to read and saves a word of memory.
* bpo-29590: fix stack trace for gen.throw() with yield from (#19896)Chris Jerdonek2020-07-091-0/+10
| | | | | | | | * Add failing test. * bpo-29590: fix stack trace for gen.throw() with yield from (GH-NNNN) When gen.throw() is called on a generator after a "yield from", the intermediate stack trace entries are lost. This commit fixes that.
* bpo-40521: Cleanup code of free lists (GH-21082)Victor Stinner2020-06-231-8/+12
| | | Add get_xxx_state() function to factorize duplicated code.
* bpo-40887: Don't use finalized free lists (GH-20700)Victor Stinner2020-06-081-0/+21
| | | | | | In debug mode, ensure that free lists are no longer used after being finalized. Set numfree to -1 in finalization functions (eg. _PyList_Fini()), and then check that numfree is not equal to -1 before using a free list (e.g list_dealloc()).
* bpo-40521: Make async gen free lists per-interpreter (GH-20643)Victor Stinner2020-06-051-40/+38
| | | | | | | | | Each interpreter now has its own asynchronous generator free lists: * Move async gen free lists into PyInterpreterState. * Move _PyAsyncGen_MAXFREELIST define to pycore_interp.h * Add _Py_async_gen_state structure. * Add tstate parameter to _PyAsyncGen_ClearFreeLists and _PyAsyncGen_Fini().
* Don't raise an exception on normal return from generator. (GH-19473)Mark Shannon2020-06-041-1/+2
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* bpo-40696: Fix a hang that can arise after gen.throw() (GH-20287)Chris Jerdonek2020-05-221-4/+6
| | | | | | | | This updates _PyErr_ChainStackItem() to use _PyErr_SetObject() instead of _PyErr_ChainExceptions(). This prevents a hang in certain circumstances because _PyErr_SetObject() performs checks to prevent cycles in the exception context chain while _PyErr_ChainExceptions() doesn't.
* Use _PyErr_ChainStackItem() inside gen_send_ex(). (GH-20173)Chris Jerdonek2020-05-181-10/+2
| | | _PyErr_ChainStackItem was just added in GH-19951 (for bpo-31033).
* bpo-31033: Improve the traceback for cancelled asyncio tasks (GH-19951)Chris Jerdonek2020-05-181-17/+3
| | | | | When an asyncio.Task is cancelled, the exception traceback now starts with where the task was first interrupted. Previously, the traceback only had "depth one."
* bpo-29587: Make gen.throw() chain exceptions with yield from (GH-19858)Chris Jerdonek2020-05-131-10/+12
| | | | | | | | | | | | The previous commits on bpo-29587 got exception chaining working with gen.throw() in the `yield` case. This patch also gets the `yield from` case working. As a consequence, implicit exception chaining now also works in the asyncio scenario of awaiting on a task when an exception is already active. Tests are included for both the asyncio case and the pure generator-only case.
* bpo-29587: _PyErr_ChainExceptions() checks exception (GH-19902)Victor Stinner2020-05-051-9/+9
| | | | | | | | | | | | | | | | | | | _PyErr_ChainExceptions() now ensures that the first parameter is an exception type, as done by _PyErr_SetObject(). * The following function now check PyExceptionInstance_Check() in an assertion using a new _PyBaseExceptionObject_cast() helper function: * PyException_GetTraceback(), PyException_SetTraceback() * PyException_GetCause(), PyException_SetCause() * PyException_GetContext(), PyException_SetContext() * PyExceptionClass_Name() now checks PyExceptionClass_Check() with an assertion. * Remove XXX comment and add gi_exc_state variable to _gen_throw(). * Remove comment from test_generators
* bpo-29587: allow chaining NULL exceptions in _gen_throw() (GH-19877)Chris Jerdonek2020-05-031-4/+5
| | | | | | | | | | | | | This is a follow-up to GH-19823 that removes the check that the exception value isn't NULL, prior to calling _PyErr_ChainExceptions(). This enables implicit exception chaining for gen.throw() in more circumstances. The commit also adds a test that a particular code snippet involving gen.throw() doesn't crash. The test shows why the new `gi_exc_state.exc_type != Py_None` check that was added is necessary. Without the new check, the code snippet (as well as a number of other tests) crashes on certain platforms (e.g. Fedora but not Mac).
* bpo-29587: Update gen.throw() to chain exceptions (#19823)Chris Jerdonek2020-05-021-0/+9
| | | | | | | Before this commit, if an exception was active inside a generator when calling gen.throw(), that exception was lost (i.e. there was no implicit exception chaining). This commit fixes that by setting exc.__context__ when calling gen.throw(exc).
* Revert "bpo-29587: Enable implicit exception chaining with gen.throw() ↵Victor Stinner2020-04-301-6/+0
| | | | | (GH-19811)" (#19821) This reverts commit 2514a632fb7d37be24c2059d0e286d35600f9795.
* bpo-29587: Enable implicit exception chaining with gen.throw() (GH-19811)Chris Jerdonek2020-04-301-0/+6
| | | | | Before this commit, if an exception was active inside a generator when calling gen.throw(), then that exception was lost (i.e. there was no implicit exception chaining). This commit fixes that.
* bpo-40428: Remove PyTuple_ClearFreeList() function (GH-19769)Victor Stinner2020-04-291-7/+3
| | | | | | | | | | | | | | | | | | | Remove the following function from the C API: * PyAsyncGen_ClearFreeLists() * PyContext_ClearFreeList() * PyDict_ClearFreeList() * PyFloat_ClearFreeList() * PyFrame_ClearFreeList() * PyList_ClearFreeList() * PySet_ClearFreeList() * PyTuple_ClearFreeList() Make these functions private, move them to the internal C API and change their return type to void. Call explicitly PyGC_Collect() to free all free lists. Note: PySet_ClearFreeList() did nothing.
* bpo-40429: PyFrame_GetCode() result cannot be NULL (GH-19772)Victor Stinner2020-04-281-5/+5
| | | Add frame_nslots() to factorize duplicate code.
* bpo-40268: Remove unused structmember.h includes (GH-19530)Victor Stinner2020-04-151-3/+3
| | | | | | If only offsetof() is needed: include stddef.h instead. When structmember.h is used, add a comment explaining that PyMemberDef is used.
* bpo-40268: Remove a few pycore_pystate.h includes (GH-19510)Victor Stinner2020-04-141-2/+2
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* bpo-39481: PEP 585 for enumerate, AsyncGeneratorType, mmap (GH-19421)Ethan Smith2020-04-101-0/+2
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* bpo-39573: Finish converting to new Py_IS_TYPE() macro (GH-18601)Andy Lester2020-03-041-3/+3
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* closes bpo-39630: Update pointers to string literals to be const char *. ↵Andy Lester2020-02-141-2/+2
| | | | (GH-18510)
* bpo-39573: Add Py_IS_TYPE() function (GH-18488)Dong-hee Na2020-02-131-1/+1
| | | Co-Author: Neil Schemenauer <nas-github@arctrix.com>
* bpo-39606: allow closing async generators that are already closed (GH-18475)Nathaniel J. Smith2020-02-131-4/+11
| | | | | | | | | | | | | | The fix for [bpo-39386](https://bugs.python.org/issue39386) attempted to make it so you couldn't reuse a agen.aclose() coroutine object. It accidentally also prevented you from calling aclose() at all on an async generator that was already closed or exhausted. This commit fixes it so we're only blocking the actually illegal cases, while allowing the legal cases. The new tests failed before this patch. Also confirmed that this fixes the test failures we were seeing in Trio with Python dev builds: https://github.com/python-trio/trio/pull/1396 https://bugs.python.org/issue39606
* bpo-39245: Switch to public API for Vectorcall (GH-18460)Petr Viktorin2020-02-111-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The bulk of this patch was generated automatically with: for name in \ PyObject_Vectorcall \ Py_TPFLAGS_HAVE_VECTORCALL \ PyObject_VectorcallMethod \ PyVectorcall_Function \ PyObject_CallOneArg \ PyObject_CallMethodNoArgs \ PyObject_CallMethodOneArg \ ; do echo $name git grep -lwz _$name | xargs -0 sed -i "s/\b_$name\b/$name/g" done old=_PyObject_FastCallDict new=PyObject_VectorcallDict git grep -lwz $old | xargs -0 sed -i "s/\b$old\b/$new/g" and then cleaned up: - Revert changes to in docs & news - Revert changes to backcompat defines in headers - Nudge misaligned comments
* bpo-39386: Prevent double awaiting of async iterator (GH-18081)Andrew Svetlov2020-01-201-4/+12
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* bpo-35409: Ignore GeneratorExit in async_gen_athrow_throw (GH-14755)Vincent Michel2019-11-191-0/+11
| | | | | | | | | Ignore `GeneratorExit` exceptions when throwing an exception into the `aclose` coroutine of an asynchronous generator. https://bugs.python.org/issue35409
* bpo-38644: Add _PyEval_EvalFrame() with tstate (GH-17131)Victor Stinner2019-11-141-1/+2
| | | | Add _PyEval_EvalFrame() static inline function to get eval_frame from tstate->interp.
* bpo-30773: Fix ag_running; prohibit running athrow/asend/aclose in parallel ↵Yury Selivanov2019-09-301-2/+34
| | | | (#7468)
* bpo-38013: make async_generator_athrow object tolerant to throwing ↵Andrew Svetlov2019-09-171-5/+0
| | | | | | | | | | | | exceptions (GH-16070) Even when the helper is not started yet. This behavior follows conventional generator one. There is no reason for `async_generator_athrow` to handle `gen.throw()` differently. https://bugs.python.org/issue38013
* bpo-15088 : Remove PyGen_NeedsFinalizing() (GH-15702)Joannah Nanjekye2019-09-061-16/+0
| | | | | Remove PyGen_NeedsFinalizing(): it was not documented, tested or used anywhere within CPython after the implementation of PEP 442.
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