Frank,
On Mon, May 05, 2003 at 03:36:56PM -0400, Frank Seesink wrote:
> Jason Tishler wrote:
> >[snip]
> >I did some more Googling. Does the following apply to your setup?
> >
> > http://support.microsoft.com/default.aspx?scid=kb;en-us;264651
>
> [snip]
> But I believe the very act of using the Fast User Switching (where you
> 'Switch Users' without logging out) is what is causing this.
I have confirmed the above hypothesis with the attached test program,
cit2.c. If cit2.exe is invoked as follows:
$ cit2
192 = OpenSemaphore(MultiSemSem_) succeeded
then it will work only under Terminal Services session 0 (i.e., the
first user to log on).
However, if cit2.exe is invoked as follows:
$ cit2 1
192 = OpenSemaphore(Global\MultiSemSem_) succeeded
then it will work under any Terminal Services session (i.e, even after a
Fast User Switch).
See the following MSDN article:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/termserv/termserv/kernel_object_namespaces.asp
which explains the multiple Terminal Services namespaces and how to
access them.
I will work with the cygipc maintainer to enhance cygipc to properly
handle Fast User Switching.
Your help in debugging this problem is greatly appreciated.
Thanks,
Jason
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