Hi, I am working on Pure Maps - a fork of @otsaloma's map applications. As a background: Its a Python app, with pyotherside used for QML/Python interaction. Its also using Mapbox GL widget that I wrote on the basis of Mapbox GL QtLocation plugin.
I am facing a problem which I don't know how to solve, hence asking for help. Namely, Pure Maps sometimes does not shutdown cleanly after closure by the user. Namely, when app is closed in GUI (I presume close guesture or touching X in SFOS overview mode), the process stays. Same if the app is started from terminal - if the shutdown was unsuccessful, terminal prompt does not return after closing the program. And here were the mystery starts. With the suspicion that maybe some python call is hanging, the printouts were added before and after Python calls (through QML Python wrapper). Regardless to whether the app was shutdown cleanly or was left hanging, the calls (sync or async) always returned. I have added printout statements in Component.onDestruction for key QML items in the app and could see that, when the app hangs, none of the onDestruction handlers were called. Hence the question, what could cause Silica app to refuse starting destruction cascade? This issue is mainly reported by J1 users and I had a great help from @pichlo with debugging it. Sometimes, we observed OOM killing of other app during the navigation. So, I presume, the device is under significant RAM pressure. But still, I am rather blank on where to debug it further and what could cause such behavior. For the record, haven't seen this on my device (onyx). Rinigus
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