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Subject:	Re: Cygwin 1.7-58 with windows 2008
To:	cygwin AT cygwin DOT com
References:	<CAPCR6Q3tkJ0ztopqRwj52WQBifdhC15ywikr7kBOokje0gNd7w AT mail DOT gmail DOT com> <CAPCR6Q01AN+KuNySYE-pUAz=8m-vNA33Xq0yiB=ULkLYQYi7Yw AT mail DOT gmail DOT com> <CAPCR6Q3vmSB2BnKdmjAqobQDOxVjU3GKE0J9q4eapkKirPO5Mg AT mail DOT gmail DOT com>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<56CC6626.3070606@gmail.com>
Date:	Tue, 23 Feb 2016 15:01:10 +0100
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On 23/02/2016 04:34, Rashi Singhal wrote:
> Hi ,
>
> We have call to "msgsnd" function that fails after processing 3 to 4 messages.
>
> We tried both Block and NO Block mechanism (IPC_NOWAIT)
>
> Also we changes configuration of cygserver.conf .This increases
> message processing to 8-10 messages.But fails after that.
>
> Attached is cygserver.conf file for reference:
>

I don't know if that is relevant , but please note that the file is with 
"with CRLF line terminators"

I tested cygserver with msgtool from cygutils-extra package
with:

   a=0 ; while [ $? -eq 0 ] ;  do  a=$[$a+1] ; echo $a ; msgtool  s $a 
"This is test" ; done

   a=0 ; while [ $? -eq 0 ] ;  do  a=$[$a+1] ; echo $a ; msgtool  r $a 
; done

The system default accepts up to 40 messages so it seems strange that
it fails on 8-10 messages or less on your system.

I suggest you to look on output of
/usr/sbin/cygserver.exe -d

for hints on why is not working for your application.

Until you provide us a simple test case that we can replicate,
I doubt we can understand or solve the issue you meet.

Regards
Marco







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