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Won't Fix
Votes
1
Found in
2018.2.0f2
Issue ID
1065590
Regression
No
Editor hangs when a native DLL uses Windows PPL (Parallel Patterns Library) for Multithreading
Steps to reproduce:
1. Open User-supplied project* ("Sensor Test.zip")
2. Play and stop Scene ("SampleScene")
3. Play the Scene again
Expected: the Scene starts
Actual: Unity Editor hangs
Reproduced in: 2017.1.5f1, 2017.2.3p2, 2017.3.2f1, 2017.4.9f1, 2018.1.9f1, 2018.2.4f1, 2018.3.0a9
Note:
*The user also added a zip file of some native functions. ("NativeFunctions.zip")
Not sure about the importance of them, since the bug replicates without them.
Attaching an Editor.log, seems that the freeze occurs at 'Begin MonoManager ReloadAssembly'
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Resolution Note:
This library creates a native thread which is blocking and cannot be aborted when the mono appdomain shuts down... causing mono to wait on it that thread to exit indefinitely. This is an issue with the library being used, and not something we can/will fix.