Re: [Gtk2hs-devel] `unsafeInitGUIForThreadedRTS` make a BadWindow X error.

[Axel S. <Axe...@in...>]

On Mar 9, 2010, at 18:19, Andy Stewart wrote:

> Axel Simon <Axe...@in...> writes:
>
>> Is this with the current darcs version of Gtk2Hs?
> Yes.
> gtk2hs darcs version with GHC 6.12.1 on Ubuntu 9.10

Ok, so maybe there is still a bug with respect to finalizers in the  
threaded RTS. However, I'm not sure what happens when you do a  
'forkProcess'. Are you following the advice on

http://www.haskell.org/ghc/docs/latest/html/libraries/unix-2.4.0.0/ 
System-Posix-Process.html#v%3AforkProcess

that tells you not to do anything but run 'executeFile' in the forked  
process?

Axel.

>>
>> Axel
>>
>> On Mar 9, 2010, at 12:51, Andy Stewart wrote:
>>
>>> Hi Axel,
>>>
>>> Look Embedded.hs under `demo/embedded`, default it use `initGUI` and
>>> everything is okay, but when i changed it to
>>> `unsafeInitGUIForThreadedRTS` with `-threaded` flags. I will got  
>>> below X
>>> error:
>>>
>>> ------------------------------> X error start  
>>> <------------------------------
>>> (Embedded:12316): Gdk-WARNING **: GdkWindow 0x5000003  
>>> unexpectedly destroyed
>>> The program 'Embedded' received an X Window System error.
>>> This probably reflects a bug in the program.
>>> The error was 'BadWindow (invalid Window parameter)'.
>>>   (Details: serial 180 error_code 3 request_code 18 minor_code 0)
>>>   (Note to programmers: normally, X errors are reported  
>>> asynchronously;
>>>    that is, you will receive the error a while after causing it.
>>>    To debug your program, run it with the --sync command line
>>>    option to change this behavior. You can then get a meaningful
>>>    backtrace from your debugger if you break on the gdk_x_error()  
>>> function.)
>>> ------------------------------> X error end    
>>> <------------------------------
>>>
>>> And this error not always occur, sometimes looks running well.
>>> So you need test *many* times if you want to recur this error.
>>>
>>> I guess X window changes when i `forkProcess` plugMain, but i'm not
>>> sure.
>>> It's make me crazy.
>>>
>>> Any idea?
>>>
>>>   -- Andy
>>>
>>>
>>>
>>>
>>>
>>>
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