[Win] libuv loop stops working in a native addon after page reload.

[jphw]

Issue Details

• Electron Version: 9.0.0 (beta versions of 9.0.0 too)
• Operating System: Windows 10 1903
• Last Known Working Electron version: 7.2.4

Repro steps

1. require a native module in a Renderer process (on a page)
2. call libuv function uv_queue_work 5 times
3. get uv_after_work_cb invoked 5 times
4. reload the page
5. call libuv function uv_queue_work 5 times once more

Expected Behavior

6. get uv_after_work_cb invoked 5 times

Actual Behavior

6. get uv_after_work_cb invoked 1 or 2 times, remaining ones never get invoked by libuv

To Reproduce

I prepared a sample project with minimal code that demonstrates the problem:

https://github.com/jphw/libuv_problems

Please read the README.MD and check src/libuv_problems_module.cpp sources.

Additional Information

app.allowRendererProcessReuse = false; works as a workaround for this issue

[aabuhijleh]

I think this is causing the same issue I'm having #24173. Regression in Node.js APIs in preload script after page reload.

[nornagon]

Related: #25314

[ckerr]

This is still an issue in master & in the back branches even after the uv threading issue that was resolved in #25332. This appears to be an unrelated issue.

[Jiahui-Yan]

This problem also exists in electron 12.0.0, but not in 9.4.4.