suspect-devices/circuitpython - CircuitPython - a Python implementation for teaching coding with microcontrollers

Age	Commit message (Collapse)	Author
2020-07-20	background callbacks: Clear any callbacks that were queued	Jeff Epler
	Before this, a background callback that was on the list when background_callback_reset was called could have ended up in a state that made it "un-queueable": its "prev" pointer could have been non-NULL.
2020-07-17	background_callback_gc_collect: We must traverse the whole list	Jeff Epler

2020-07-17	background_callback: Add gc collect callback	Jeff Epler
	A background callback must never outlive its related object. By collecting the head of the linked list of background tasks, this will not happen. One hypothetical case where this could happen is if an MP3Decoder is deleted while its callback to fill its buffer is scheduled.
2020-07-15	background_callback: Avoid CALLBACK_CRITICAL_BEGIN with nothing to do	Jeff Epler
	CALLBACK_CRITICAL_BEGIN is heavyweight, but we can be confident we do not have work to do as long as callback_head is NULL. This gives back performance on nRF.
2020-07-15	supervisor: Add a linked list of background callbacks	Jeff Epler
	In time, we should transition interrupt driven background tasks out of the overall run_background_tasks into distinct background callbacks, so that the number of checks that occur with each tick is reduced.