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* gh-95808: Add missing early returns in _asynciomodule.c (#95809)Yury Selivanov2022-08-151-2/+3
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* gh-91323: Revert "Allow overriding a future compliance check in asyncio.Task ↵Łukasz Langa2022-08-041-64/+7
| | | | | | (GH-32197)" (GH-95442) This reverts commit d4bb38f82bf18b00db3129031ce4969b6f0caab9.
* bpo-45924: Fix asyncio incorrect traceback when future's exception is raised ↵Kumar Aditya2022-07-111-0/+14
| | | | multiple times (GH-30274)
* GH-90230: Add stats to breakdown the origin of calls to `PyEval_EvalFrame` ↵Mark Shannon2022-05-271-1/+2
| | | | (GH-93284)
* GH-93207: Remove HAVE_STDARG_PROTOTYPES configure check for stdarg.h (#93215)Kumar Aditya2022-05-271-4/+0
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* gh-91320: Use _PyCFunction_CAST() (#92251)Victor Stinner2022-05-031-1/+1
| | | | | | | | | | Replace "(PyCFunction)(void(*)(void))func" cast with _PyCFunction_CAST(func). Change generated by the command: sed -i -e \ 's!(PyCFunction)(void(\*)(void)) *\([A-Za-z0-9_]\+\)!_PyCFunction_CAST(\1)!g' \ $(find -name "*.c")
* bpo-47167: Allow overriding a future compliance check in asyncio.Task (GH-32197)Andrew Svetlov2022-04-011-7/+64
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* asyncio.Task: rename internal nested variable to don't hide another ↵Andrew Svetlov2022-03-291-13/+13
| | | | declaration from outer scope (GH-32181)
* bpo-46829: Deprecate passing a message into Future.cancel() and ↵Andrew Svetlov2022-03-231-0/+20
| | | | | Task.cancel() (GH-31840) After a long deliberation we ended up feeling that the message argument for Future.cancel(), added in 3.9, was a bad idea, so we're deprecating it in 3.11 and plan to remove it in 3.13.
* bpo-47057: Use FASTCALL convention for FutureIter.throw() (GH-31973)Andrew Svetlov2022-03-191-8/+13
| | | Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
* bpo-47039: Normalize repr() of asyncio future and task objects (GH-31950)Andrew Svetlov2022-03-171-56/+21
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* bpo-46994: Accept explicit contextvars.Context in asyncio create_task() API ↵Andrew Svetlov2022-03-141-5/+11
| | | | (GH-31837)
* bpo-46771: Remove two controversial lines from Task.cancel() (GH-31623)Guido van Rossum2022-02-281-3/+7
| | | | | | | | | | | | | | | Also from the _asyncio C accelerator module, and adjust one test that the change caused to fail. For more discussion see the discussion starting here: https://github.com/python/cpython/pull/31394#issuecomment-1053545331 (Basically, @asvetlov proposed to return False from cancel() when there is already a pending cancellation, and I went along, even though it wasn't necessary for the task group implementation, and @agronholm has come up with a counterexample that fails because of this change. So now I'm changing it back to the old semantics (but still bumping the counter) until we can have a proper discussion about this.)
* bpo-46771: Implement task cancel requests counter (GH-31513)Tin Tvrtković2022-02-241-27/+18
| | | | | This changes cancelling() and uncancel() to return the count of pending cancellations. This can be used to avoid bugs in certain edge cases (e.g. two timeouts going off at the same time).
* bpo-45390: Propagate CancelledError's message from cancelled task to its ↵Andrew Svetlov2022-02-211-23/+19
| | | | | | awaiter (GH-31383) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* bpo-46752: Add TaskGroup; add Task..cancelled(),.uncancel() (GH-31270)Guido van Rossum2022-02-151-0/+59
| | | | | | | | | | | | | | | | | asyncio/taskgroups.py is an adaptation of taskgroup.py from EdgeDb, with the following key changes: - Allow creating new tasks as long as the last task hasn't finished - Raise [Base]ExceptionGroup (directly) rather than TaskGroupError deriving from MultiError - Instead of monkey-patching the parent task's cancel() method, add a new public API to Task The Task class has a new internal flag, `_cancel_requested`, which is set when `.cancel()` is called successfully. The `.cancelling()` method returns the value of this flag. Further `.cancel()` calls while this flag is set return False. To reset this flag, call `.uncancel()`. Thus, a Task that catches and ignores `CancelledError` should call `.uncancel()` if it wants to be cancellable again; until it does so, it is deemed to be busy with uninterruptible cleanup. This new Task API helps solve the problem where TaskGroup needs to distinguish between whether the parent task being cancelled "from the outside" vs. "from inside". Co-authored-by: Yury Selivanov <yury@edgedb.com> Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
* bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized ↵Eric Snow2022-02-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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-46469: Make asyncio generic classes return GenericAlias (GH-30777)Kumar Aditya2022-01-221-16/+2
| | | | | | | | | | | | * bpo-46469: Make asyncio generic classes return GenericAlias * 📜🤖 Added by blurb_it. * Update Misc/NEWS.d/next/Library/2022-01-22-05-05-08.bpo-46469.plUab5.rst Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com> Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
* bpo-46070: Fix asyncio initialisation guard (GH-30423)Erlend Egeberg Aasland2022-01-071-6/+4
| | | | If init flag is set, exit successfully immediately. If not, only set the flag after successful initialization.
* bpo-45711: Remove type and traceback from exc_info (GH-30122)Irit Katriel2021-12-171-8/+2
| | | | | | | | * 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-45711: [asyncio] Normalize exceptions immediately after Fetch, before ↵Irit Katriel2021-12-031-7/+12
| | | | they are stored as StackItem, which should be normalized (GH-29890)
* bpo-45711: Use _PyErr_ClearExcState instead of setting only exc_value to ↵Irit Katriel2021-11-101-4/+9
| | | | NULL (GH-29404)
* bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157)Christian Heimes2021-10-221-0/+4
| | | | | | | | | | | | | | setup.py no longer defines Py_BUILD_CORE_MODULE. Instead every module defines the macro before #include "Python.h" unless Py_BUILD_CORE_BUILTIN is already defined. Py_BUILD_CORE_BUILTIN is defined for every module that is built by Modules/Setup. The PR also simplifies Modules/Setup. Makefile and makesetup already define Py_BUILD_CORE_BUILTIN and include Modules/internal for us. Signed-off-by: Christian Heimes <christian@python.org>
* pycore_pystate.h no longer redefines PyThreadState_GET() (GH-28921)Victor Stinner2021-10-131-2/+3
| | | | | | | | | | | | | | | | | | | | | | Redefining the PyThreadState_GET() macro in pycore_pystate.h is useless since it doesn't affect files not including it. Either use _PyThreadState_GET() directly, or don't use pycore_pystate.h internal C API. For example, the _testcapi extension don't use the internal C API, but use the public PyThreadState_Get() function instead. Replace PyThreadState_Get() with _PyThreadState_GET(). The _PyThreadState_GET() macro is more efficient than PyThreadState_Get() and PyThreadState_GET() function calls which call fail with a fatal Python error. posixmodule.c and _ctypes extension now include <windows.h> before pycore header files (like pycore_call.h). _PyTraceback_Add() now uses _PyErr_Fetch()/_PyErr_Restore() instead of PyErr_Fetch()/PyErr_Restore(). The _decimal and _xxsubinterpreters extensions are now built with the Py_BUILD_CORE_MODULE macro defined to get access to the internal C API.
* bpo-45262, asyncio: Fix cache of the running loop holder (GH-28796)Matthias Reichl2021-10-071-0/+3
| | | Prevent use-after-free of running loop holder via cache.
* bpo-42747: Remove Py_TPFLAGS_HAVE_AM_SEND and make ↵Petr Viktorin2021-07-231-2/+1
| | | | | | | | | | | | 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-39529: Deprecate creating new event loop in asyncio.get_event_loop() ↵Serhiy Storchaka2021-04-251-3/+23
| | | | | | (GH-23554) asyncio.get_event_loop() emits now a deprecation warning when it creates a new event loop. In future releases it will became an alias of asyncio.get_running_loop().
* Fix memory leak introduced by GH-22780 (GH-23237)Andrew Svetlov2020-11-111-0/+1
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* bpo-42085: Introduce dedicated entry in PyAsyncMethods for sending values ↵Vladimir Matveev2020-11-101-11/+45
| | | | (#22780)
* Delete TaskWakeupMethWrapper_Type and use PyCFunction instead (#22875)Vladimir Matveev2020-10-221-94/+8
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* bpo-41756: Add PyIter_Send function (#22443)Vladimir Matveev2020-10-101-8/+1
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* bpo-41756: Introduce PyGen_Send C API (GH-22196)Vladimir Matveev2020-09-191-5/+22
| | | | | | | | | | | | | 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-41247: asyncio.set_running_loop() cache running loop holder (GH-21401)Tony Solomonik2020-07-081-3/+9
| | | | | | | | | The running loop holder cache variable was always set to NULL when calling set_running_loop. Now set_running_loop saves the newly created running loop holder in the cache variable for faster access in get_running_loop. Automerge-Triggered-By: @1st1
* bpo-40967: Remove deprecated asyncio.Task.current_task() and ↵Rémi Lapeyre2020-07-021-89/+0
| | | | asyncio.Task.all_tasks() (GH-20874)
* bpo-40061: Fix a possible refleak in _asynciomodule.c (GH-19748)Zackery Spytz2020-05-301-0/+1
| | | | tup should be decrefed in the unlikely event of a PyList_New() failure.
* bpo-40696: Fix a hang that can arise after gen.throw() (GH-20287)Chris Jerdonek2020-05-221-6/+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.
* bpo-31033: Improve the traceback for cancelled asyncio tasks (GH-19951)Chris Jerdonek2020-05-181-21/+63
| | | | | 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-31033: Add a msg argument to Future.cancel() and Task.cancel() (GH-19979)Chris Jerdonek2020-05-151-16/+99
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* bpo-40559: Add Py_DECREF to _asynciomodule.c:task_step_impl() (GH-19990)Chris Jerdonek2020-05-081-0/+4
| | | | This fixes a possible memory leak in the C implementation of asyncio.Task.
* bpo-40294: Fix _asyncio when module is loaded/unloaded multiple times (GH-19542)Jeffrey Quesnelle2020-04-171-0/+2
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* bpo-40268: Remove unused structmember.h includes (GH-19530)Victor Stinner2020-04-151-1/+1
| | | | | | If only offsetof() is needed: include stddef.h instead. When structmember.h is used, add a comment explaining that PyMemberDef is used.
* bpo-39947: Add PyThreadState_GetID() function (GH-19163)Victor Stinner2020-03-251-2/+3
| | | | Add PyThreadState_GetID() function: get the unique identifier of a Python thread state.
* bpo-39947: Add _PyThreadState_GetDict() function (GH-19160)Victor Stinner2020-03-251-2/+3
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* bpo-40024: Update C extension modules to use PyModule_AddType() (GH-19119)Dong-hee Na2020-03-241-12/+3
| | | | | | Update _asyncio, _bz2, _csv, _curses, _datetime, _io, _operator, _pickle, _queue, blake2, multibytecodec and overlapped C extension modules to use PyModule_AddType().
* bpo-39573: Finish converting to new Py_IS_TYPE() macro (GH-18601)Andy Lester2020-03-041-1/+1
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* bpo-39573: Clean up modules and headers to use Py_IS_TYPE() function (GH-18521)Dong-hee Na2020-02-171-3/+3
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* bpo-39245: Switch to public API for Vectorcall (GH-18460)Petr Viktorin2020-02-111-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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-39573: Use Py_SET_SIZE() function (GH-18402)Victor Stinner2020-02-071-1/+1
| | | | Replace direct acccess to PyVarObject.ob_size with usage of the Py_SET_SIZE() function.
* Make repr of C accelerated TaskWakeupMethWrapper the same as of pure Python ↵Andrew Svetlov2019-12-071-1/+17
| | | | version (GH-17484)
* bpo-38978: Implement __class_getitem__ for asyncio objects (GH-17491)Batuhan Taşkaya2019-12-071-0/+15
| | | https://bugs.python.org/issue38978
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