Calling `Close` in another thread crashes

[claunia]

When Start() is called in one thread, therefore blocking it, and Stop() is called in another thread, libfuse.so.2 crashes with a SIGSEGV in fuse_exit().

May be similar to fusepy/fusepy#116

[alhimik45]

@claunia Yeah. As I understand from FUSE docs fuse_exit and thus Stop() can be used only inside file system operations.
You can use workaround, as mentioned in fusepy/fusepy#116:

using Mono.Unix.Native; // already exists as Mono.Fuse.NETStandard dependency
...
fuseThreadPid = Syscall.getpid();
fs.Start();
...
//in another thread
Syscall.kill(fuseThreadPid, Signum.SIGHUP); //instead fs.Stop ();

I'll add informative exception in Stop() to clarify this moment.

fuse_main that used in Start() doesnt allow any in-process stop from another thread, but it is possible to use more low-level calls to implement this. I think I need to implement it as another method like StartEventLoop(). And with it Stop() will work in expected intuitive manner.