bug: unstable myThreadId in GHC 6.6.1

[Bulat Ziganshin]

Hello Don,

Friday, April 10, 2009, 8:36:32 PM, you wrote:

unfortunately, full example is my whole program. i will try to make
short example if someone will say that it looks like a bug and it was
not fixed in intermediate versions. basically, scenario is simple -
myThreadId changed due the life of (bound) thread

> Could you send a full example we can compile and test?
> This is only a fragment.

> bulat.ziganshin:
>> Hello glasgow-haskell-users,
>> 
>> i've looked for this bug in Trac but don't found anything. so:
>> 
>> startGUI action = runInBoundThread $ do
>>   unsafeInitGUIForThreadedRTS
>>   myThreadId >>= writeIORef guiThread
>>   action >>= widgetShowAll
>>   mainGUI
>> 
>> guiThread  =  unsafePerformIO$ newIORef$ error "undefined GUI::guiThread"
>> 
>> 
>> Later in the same thread i ask for myThreadId and get different value.
>> interesting that value returned in startGUI is 23 while later values
>> are about 7000. probably this reflects total amount of threads created
>> so far
>> 
>> so that's the problem. Win API call returns constant thread number
>> (that looks natural since the thread is bound). so either:
>> 
>> 1) it's feature - please mention this in docs
>> 2) it was fixed since 6.6.1
>> 3) we need full-scale bugreport using 6.10.2
>> 
>> 
>> -- 
>> Best regards,
>>  Bulat                          mailto:Bulat.Ziganshin at gmail.com
>> 
>> _______________________________________________
>> Glasgow-haskell-users mailing list
>> Glasgow-haskell-users at haskell.org
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-- 
Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com