Commit Graph

28 Commits

Author SHA1 Message Date
Victor Stinner b270b82f11
gh-91320: Argument Clinic uses _PyCFunction_CAST() (#32210)
Replace "(PyCFunction)(void(*)(void))func" cast with
_PyCFunction_CAST(func).
2022-05-03 20:25:41 +02:00
Andrew Svetlov d4bb38f82b
bpo-47167: Allow overriding a future compliance check in asyncio.Task (GH-32197) 2022-04-01 04:25:15 +03:00
Andrew Svetlov 30b5d41fab
bpo-47039: Normalize repr() of asyncio future and task objects (GH-31950) 2022-03-17 03:03:09 +02:00
Andrew Svetlov 9523c0d84f
bpo-46994: Accept explicit contextvars.Context in asyncio create_task() API (GH-31837) 2022-03-14 13:54:13 +02:00
Tin Tvrtković 7fce1063b6
bpo-46771: Implement task cancel requests counter (GH-31513)
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).
2022-02-23 18:17:00 -08:00
Guido van Rossum 602630ac18
bpo-46752: Add TaskGroup; add Task..cancelled(),.uncancel() (GH-31270)
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>
2022-02-15 15:42:04 -08:00
Serhiy Storchaka 172c0f2752
bpo-39529: Deprecate creating new event loop in asyncio.get_event_loop() (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().
2021-04-25 13:40:44 +03:00
Rémi Lapeyre 004e64e805
bpo-40967: Remove deprecated asyncio.Task.current_task() and asyncio.Task.all_tasks() (GH-20874) 2020-07-01 20:41:21 -07:00
Chris Jerdonek da742ba826
bpo-31033: Improve the traceback for cancelled asyncio tasks (GH-19951)
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."
2020-05-17 22:47:31 -07:00
Chris Jerdonek 1ce5841eca
bpo-31033: Add a msg argument to Future.cancel() and Task.cancel() (GH-19979) 2020-05-15 16:55:50 -07:00
Serhiy Storchaka 279f44678c
bpo-37206: Unrepresentable default values no longer represented as None. (GH-13933)
In ArgumentClinic, value "NULL" should now be used only for unrepresentable default values
(like in the optional third parameter of getattr). "None" should be used if None is accepted
as argument and passing None has the same effect as not passing the argument at all.
2019-09-14 12:24:05 +03:00
Alex Grönholm 98ef92002e bpo-36999: Add asyncio.Task.get_coro() (GH-13680)
https://bugs.python.org/issue36999
2019-05-30 08:30:09 -07:00
Serhiy Storchaka 3191391515
bpo-36127: Argument Clinic: inline parsing code for keyword parameters. (GH-12058) 2019-03-14 10:32:22 +02:00
Serhiy Storchaka 4a934d490f
bpo-33012: Fix invalid function cast warnings with gcc 8 in Argument Clinic. (GH-6748)
Fix invalid function cast warnings with gcc 8
for method conventions different from METH_NOARGS, METH_O and
METH_VARARGS in Argument Clinic generated code.
2018-11-27 11:27:36 +02:00
Alex Grönholm cca4eec3c0 bpo-34270: Make it possible to name asyncio tasks (GH-8547)
Co-authored-by: Antti Haapala <antti.haapala@anttipatterns.com>
2018-08-08 17:06:47 -04:00
Yury Selivanov 22feeb88b4
bpo-32643: Drop support for a few private Task and Future APIs. (#5293)
Specifically, it's not possible to subclass Task/Future classes
and override the following methods:

* Future._schedule_callbacks
* Task._step
* Task._wakeup
2018-01-24 11:31:01 -05:00
Yury Selivanov f23746a934
bpo-32436: Implement PEP 567 (#5027) 2018-01-22 19:11:18 -05:00
Yury Selivanov 0cf16f9ea0
bpo-32363: Disable Task.set_exception() and Task.set_result() (#4923) 2017-12-25 10:48:15 -05:00
Yury Selivanov ca9b36cd1a
bpo-32415: Add asyncio.Task.get_loop() and Future.get_loop() (#4992) 2017-12-23 15:04:15 -05:00
Andrew Svetlov 44d1a5912e
bpo-32250: Implement asyncio.current_task() and asyncio.all_tasks() (#4799) 2017-12-16 21:58:38 +02:00
Serhiy Storchaka a5552f023e
bpo-32240: Add the const qualifier to declarations of PyObject* array arguments. (#4746) 2017-12-15 13:11:11 +02:00
Yury Selivanov a70232f288
bpo-32296: Implement asyncio.get_event_loop and _get_running_loop in C. (#4827)
asyncio.get_event_loop(), and, subsequently asyncio._get_running_loop()
are one of the most frequently executed functions in asyncio.  They also
can't be sped up by third-party event loops like uvloop.

When implemented in C they become 4x faster.
2017-12-13 14:49:42 -05:00
Serhiy Storchaka bca4939d80 bpo-31185: Fixed miscellaneous errors in asyncio speedup module. (#3076) 2017-09-03 08:10:14 +03:00
Serhiy Storchaka 6969eaf468 bpo-29464: Rename METH_FASTCALL to METH_FASTCALL|METH_KEYWORDS and make (#1955)
the bare METH_FASTCALL be used for functions with positional-only
parameters.
2017-07-03 21:20:15 +03:00
Yury Selivanov 8d26aa930c bpo-29271: Fix Task.current_task and Task.all_tasks to accept None. (#406) 2017-03-02 22:16:33 -05:00
Victor Stinner 259f0e4437 Run Argument Clinic: METH_VARARGS=>METH_FASTCALL
Issue #29286. Run Argument Clinic to get the new faster METH_FASTCALL calling
convention for functions using only positional arguments.
2017-01-17 01:35:17 +01:00
Victor Stinner 3e1fad6913 Rename _PyArg_ParseStack to _PyArg_ParseStackAndKeywords
Issue #29286.
2017-01-17 01:29:01 +01:00
Yury Selivanov a0c1ba608e Issue #28544: Implement asyncio.Task in C.
This implementation provides additional 10-20% speed boost for
asyncio programs.

The patch also fixes _asynciomodule.c to use Arguments Clinic, and
makes '_schedule_callbacks' an overridable method (as it was in 3.5).
2016-10-28 12:52:37 -04:00