[81_11] Fix the bug causing crashes when dragging tabs.

XmacsLabs / mogan

Mogan STEM Suite (based on GNU TeXmacs): Enjoy exploring science and technology!

https://mogan.app

GNU General Public License v3.0

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Closed Minzihao closed 1 month ago

Minzihao commented 1 month ago

Just drag it. I believe it will be fine this time.

Oyyko commented 1 month ago

@Minzihao 可以说一下为什么之前需要mutex现在不需要了吗？

Minzihao commented 1 month ago

@Minzihao 可以说一下为什么之前需要mutex现在不需要了吗？

之前使用mutex是防止拖动tab的过程中执行UI更新，因为UI更新会替换掉所有的tab窗口，导致持有一个无效tab指针，我以为这是导致crash的原因，然而，原因不仅如此。我在files changed中对代码评论了，你去看看