RFC: KUSER_SHARED_DATA update patch to fix bug 29168

[Joey Yandle]

>> However, I do not know if we can have additional threads at all in a
>> Win32 process without confusing the win32 processes, or if this needs
>> to be solved differently (APC?).
>>
> 
> A previous version of my patch used NtTimer/APC:
> 

I'm attaching a cleaned up version of my APC code.  It does get called
regularly:

000f:fixme:thread:update_shared_data_time 129768277137647820
0041:fixme:win:GetWindowPlacement not supported on other process window
0x90076
0036:fixme:d3d:query_init Unhandled query type 0xc.
000f:fixme:thread:update_shared_data_time 129768277137814980

Though the interval is not exactly 15.600 ms, as it is with a separate
thread and nanosleep.

And most importantly, it does not allow SW:TOR to make it to the
character selection screen.

Could I have initialized the timer with different values to make it more
precise?

thanks,

Joey
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