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List:       xfree86-devel
Subject:    Re: Xlib :    sequence lost (0x1718e > 0x71a0) in reply to 0x0!
From:       niranjan () eninteractive ! com
Date:       2006-02-07 7:38:12
Message-ID: 40235.127.0.0.1.1139297892.squirrel () localhost
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Hi
  to all
        I have made separate  display connection to Xserver for each thread
       but this is working fine sometimes not always .sometime it fail
       when i  invoke the dialog .
   can anybody help me to resolve this issues .
Thanks



    Each call to XOpenDisplay opens a new communication socket to
> the X-server.  Commands sent through this socket need to be serialized.
> If you have two threads trying to send data at the same time through
> the same socket they will corrupt each other's data.  XInitThreads
> enables a lock around the Xlib code that accesses the socket so
> that only one thread can send data through the socket at a time.
> This generally works fine except that if you pause one thread while
> it is in Xlib and has already taken the lock, it will prevent any other
> thread from entering Xlib and taking the lock.  Separate display
> connections for each thread are the solution to that.
>
> 			Mark.
>
>
> On Wed, 1 Feb 2006 niranjan@eninteractive.com wrote:
>
>> Hi
>>   u have given a good suggestion but I dont understand if the
>>     pausing thread block any other thread trying to use the
>>    Xlib with the same display connection then why it is working
>>     fine sometimes .
>> Thanks
>>
>>  Separate threads either need to use separate display
>> > connections or you need to enable thread mutexes for a shared
>> > connection (XInitThreads will enable Xlib's internal mutexes).
>> > Note still, that pausing a thread while it's in Xlib can block
>> > any other threads also trying to use Xlib with the same display
>> > connection.  You'd want to use separate display connections
>> > for that.
>> >
>> > 			Mark.
>> >
>> > On Tue, 31 Jan 2006 niranjan@eninteractive.com wrote:
>> >
>> >>  Hi to all
>> >>
>> >>
>> >> Iam building an kde Application When  I pause the current pthread and
>> >>       invoke an dialog in another thread the following error is
>> coming .
>> >>
>> >> Xlib : unexpected async reply
>> >> Xlib :    sequence lost (0x1718e > 0x71a0) in reply to 0x0!
>> >> X Error : BadImplementation (server does not implement opertaion) 17
>> >>     Major opcode : 20
>> >>     MInor opcode : 0
>> >>     Resource id  : 0x759d1
>> >> The error is coming randomly , not always .
>> >>   Can any will help how to come out of this error .
>> >>
>> >>
>> >>  Thanks
>> >> _______________________________________________
>> >> Devel mailing list
>> >> Devel@XFree86.Org
>> >> http://XFree86.Org/mailman/listinfo/devel
>> >>
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>> > Devel@XFree86.Org
>> > http://XFree86.Org/mailman/listinfo/devel
>> >
>>
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