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lvgl / lv_binding_micropython

LVGL binding for MicroPython
MIT License
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garbage collection in the simulator not working #271

Closed kdschlosser closed 1 year ago

kdschlosser commented 1 year ago

The garbage collection in the online simulator is not functioning

https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/02b56115173e8824cd0ac97947c32cf190a01e92/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/02b56115173e8824cd0ac97947c32cf190a01e92/examples/widgets/label/lv_example_label_4.py&script_direct=3ea10711be6512c21cfa1b9155efd3cec5ccc7d3

you can se the first 2 prints of the amount of free memory but not the 3rd. It gets stuck when garbage collection is happening. Also automatic garbage collection doesn't occur either.

embeddedt commented 1 year ago

The garbage collector on the JS port has never worked 100% reliably, unfortunately. I tested your example on MicroPython's current version of JS port (without the LVGL additions) and there gc.collect() crashes immediately (this has also been reported upstream). Supposedly the garbage collector was fixed a while ago but it seems to have been broken again.

kdschlosser commented 1 year ago

ok cool. Just thought it was worth mentioning

embeddedt commented 1 year ago

It looks like https://github.com/micropython/micropython/pull/11823 would fix this, I'll be keeping an eye on it and may cherry-pick it to the JS branch if upstream won't merge it.