openmano-mpy/extmod/uasyncio, branch master MicroPython source and hardware configuration for OpenMano extmod/uasyncio: Use .errno instead of .args[0] for OSError exceptions. 2021-04-23T12:03:46+00:00 Damien George 2021-04-20T07:12:08+00:00 342d55529d6f3312fc158d7af005f56d5e30adef Signed-off-by: Damien George <damien@micropython.org> 
Signed-off-by: Damien George <damien@micropython.org>
extmod/uasyncio: Add ThreadSafeFlag. 2021-02-16T05:35:37+00:00 Jim Mussared 2021-02-12T03:14:07+00:00 5e96e89999cd3b922dbc1a6ed473b44c81db92f4 This is a MicroPython-extension that allows for code running in IRQ (hard or soft) or scheduler context to sequence asyncio code. Signed-off-by: Jim Mussared <jim.mussared@gmail.com> 
This is a MicroPython-extension that allows for code running in IRQ
(hard or soft) or scheduler context to sequence asyncio code.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
extmod/uasyncio: Add asyncio.current_task(). 2021-02-13T04:11:17+00:00 Jim Mussared 2021-02-12T03:11:18+00:00 7ed99544e4cc1c09bd5abf9f54869c3122fa033b Matches CPython behavior. Fixes #6686 
Matches CPython behavior.

Fixes #6686
extmod/uasyncio: Fix cancellation handling of wait_for. 2020-12-02T01:31:37+00:00 Damien George 2020-12-01T03:22:16+00:00 b505971069333a373d9f0c12138b64dab83fed72 This commit switches the roles of the helper task from a cancellation task to a runner task, to get the correct semantics for cancellation of wait_for. Some uasyncio tests are now disabled for the native emitter due to issues with native code generation of generators and yield-from. Fixes #5797. Signed-off-by: Damien George <damien@micropython.org> 
This commit switches the roles of the helper task from a cancellation task
to a runner task, to get the correct semantics for cancellation of
wait_for.

Some uasyncio tests are now disabled for the native emitter due to issues
with native code generation of generators and yield-from.

Fixes #5797.

Signed-off-by: Damien George <damien@micropython.org>
extmod/uasyncio: Add Task.done() method. 2020-12-02T01:07:06+00:00 Damien George 2020-11-30T06:38:30+00:00 309dfe39e07d3c3c8ba873ed09116cea9f6f52c0 This is added because task.coro==None is no longer the way to detect if a task is finished. Providing a (CPython compatible) function for this allows the implementation to be abstracted away. Signed-off-by: Damien George <damien@micropython.org> 
This is added because task.coro==None is no longer the way to detect if a
task is finished.  Providing a (CPython compatible) function for this
allows the implementation to be abstracted away.

Signed-off-by: Damien George <damien@micropython.org>
extmod/uasyncio: Delay calling Loop.call_exception_handler by 1 loop. 2020-12-02T01:07:06+00:00 Damien George 2020-11-30T06:38:19+00:00 ca40eb0fdadd5a963b9a065999b092f029a598d5 When a tasks raises an exception which is uncaught, and no other task await's on that task, then an error message is printed (or a user function called) via a call to Loop.call_exception_handler. In CPython this call is made when the Task object is freed (eg via reference counting) because it's at that point that it is known that the exception that was raised will never be handled. MicroPython does not have reference counting and the current behaviour is to deal with uncaught exceptions as early as possible, ie as soon as they terminate the task. But this can be undesirable because in certain cases a task can start and raise an exception immediately (before any await is executed in that task's coro) and before any other task gets a chance to await on it to catch the exception. This commit changes the behaviour so that tasks which end due to an uncaught exception are scheduled one more time for execution, and if they are not await'ed on by the next scheduling loop, then the exception handler is called (eg the exception is printed out). Signed-off-by: Damien George <damien@micropython.org> 
When a tasks raises an exception which is uncaught, and no other task
await's on that task, then an error message is printed (or a user function
called) via a call to Loop.call_exception_handler.  In CPython this call is
made when the Task object is freed (eg via reference counting) because it's
at that point that it is known that the exception that was raised will
never be handled.

MicroPython does not have reference counting and the current behaviour is
to deal with uncaught exceptions as early as possible, ie as soon as they
terminate the task.  But this can be undesirable because in certain cases
a task can start and raise an exception immediately (before any await is
executed in that task's coro) and before any other task gets a chance to
await on it to catch the exception.

This commit changes the behaviour so that tasks which end due to an
uncaught exception are scheduled one more time for execution, and if they
are not await'ed on by the next scheduling loop, then the exception handler
is called (eg the exception is printed out).

Signed-off-by: Damien George <damien@micropython.org>
extmod/uasyncio: Truncate negative sleeps to 0. 2020-08-22T02:17:06+00:00 Damien George 2020-08-20T13:13:25+00:00 55c76eaac12af4e93f8de11bb25c835e8b65c623 Otherwise a task that continuously awaits on a large negative sleep can monopolise the scheduler (because its wake time is always less than everything else in the pairing heap). Signed-off-by: Damien George <damien@micropython.org> 
Otherwise a task that continuously awaits on a large negative sleep can
monopolise the scheduler (because its wake time is always less than
everything else in the pairing heap).

Signed-off-by: Damien George <damien@micropython.org>
extmod/uasyncio: Add StreamReader.readexactly(n) method. 2020-07-25T13:10:05+00:00 Damien George 2020-07-25T13:05:41+00:00 441460d81ff2b1faee7d044d859896f754361b93 It raises on EOFError instead of an IncompleteReadError (which is what CPython does). But the latter is derived from EOFError so code compatible with MicroPython and CPython can be written by catching EOFError (eg see included test). Fixes issue #6156. Signed-off-by: Damien George <damien@micropython.org> 
It raises on EOFError instead of an IncompleteReadError (which is what
CPython does).  But the latter is derived from EOFError so code compatible
with MicroPython and CPython can be written by catching EOFError (eg see
included test).

Fixes issue #6156.

Signed-off-by: Damien George <damien@micropython.org>
extmod/uasyncio: Add asyncio.wait_for_ms function. 2020-06-10T12:29:44+00:00 Damien George 2020-06-05T11:26:27+00:00 a4c96fb3b0c5e3bf83238a0edd0fbcbfd96208c8 Fixes issue #6107. 
Fixes issue #6107.
extmod/uasyncio: Change cannot to can't in error message, and test exp. 2020-04-14T11:51:25+00:00 Damien George 2020-04-14T11:51:25+00:00 5f0661b4fe6a68c38e9eecd94845f4bd1ed3046a Follow up to 8e048d2548867aac743866ca5a4c244b7b5aac09 which missed these. 
Follow up to 8e048d2548867aac743866ca5a4c244b7b5aac09 which missed these.