Jeremy Huddleston Sequoia <jerem...@apple.com> writes:

> ==================
> WARNING: ThreadSanitizer: data race (pid=4943)
>   Read of size 4 at 0x00010c4e3854 by thread T8:
>     #0 WaitForSomething WaitFor.c:237 (X11.bin+0x00010049216c)
>     #1 Dispatch dispatch.c:413 (X11.bin+0x000100352ed9)
>     #2 dix_main main.c:287 (X11.bin+0x00010036e894)
>     #3 server_thread quartzStartup.c:66 (X11.bin+0x000100039e63)
>
>   Previous write of size 4 at 0x00010c4e3854 by thread T12 (mutexes: write 
> M856, write M1976):
>     #0 mieqEnqueue mieq.c:263 (X11.bin+0x000100448d14)
>     #1 DarwinSendDDXEvent darwinEvents.c:641 (X11.bin+0x000100033613)
>     #2 DarwinProcessFDAdditionQueue_thread darwinEvents.c:338 
> (X11.bin+0x000100032039)

I'm not sure I want to resolve this "bug" -- the event queue has been
designed to be safe in a lockless threaded environment as it was originally
designed to directly map a kernel address which would be modified at
interrupt time. Is there an actual issue with the design?

-- 
-keith

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