Crash when resizing the window during LaTeX threaded rendering. #15

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opened 2024-10-29 18:55:49 +00:00 by Ad5001 · 0 comments

Ad5001 commented

2024-10-29 18:55:49 +00:00

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When enabling LaTeX and the async rendering experimental option, trying to open a file which requires several render, resizing the window causes Qt to segfault.

This is due to a racing condition that happens between the newly queued rendering invalidating the previous one, and the state stored and restored after the latex render thread completes. Some more digging is required, as there already is some mitigation code to prevent both drawing on invalidated context and GC wrongfully destroying interal Qt objects.

When enabling LaTeX and the async rendering experimental option, trying to open a file which requires several render, resizing the window causes Qt to segfault. This is due to a racing condition that happens between the newly queued rendering invalidating the previous one, and the state stored and restored after the latex render thread completes. Some more digging is required, as there already is some mitigation code to prevent both [drawing on invalidated context](https://git.ad5001.eu/Ad5001/LogarithmPlotter/src/branch/master/common/src/module/canvas.mjs#L528) and [GC wrongfully destroying interal Qt objects](https://git.ad5001.eu/Ad5001/LogarithmPlotter/src/branch/master/common/src/module/latex.mjs#L146).