urwid / urwid / 36882333791

92%

Build Type

push

github

Committed by web-flow

Commit Message

Free raw display screens without the cyclic garbage collector (#1377)

* Free raw display screens without the cyclic garbage collector

Screen connected its own palette-update signal to a bound method of
itself, a reference cycle, so a dropped screen and its resize socket pair
stayed open until the cyclic collector ran. The handler is now connected
with the screen as a weak argument, and a dropped screen is freed at once.

* Run the screen-freeing test on CPython only

The test expects a dropped screen to be freed at once, which holds only
under CPython's reference counting; the tracing collectors of PyPy and
GraalPy free it at an unpredictable time.

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