[Ecls-list] threading failures

[Daniel Kochmański]

Ok, it failed (just after sending an e-mail, it's good to know that
Muprhy's law still works :-)).

Daniel

Daniel Kochmański writes:

> Hello,
>
> that's probably my fault, sorry. I've migrated bugs manually and
> probably missed this one (I remember this bug! but can't find anywhere).
>
> I'm adding it to regression tests in repository, thanks!  Yes, old
> reports are unfortunately lost.
>
> As a sienote, please use ecl-devel at common-lisp.net mailing list – I'm
> closing the old one today. You can subscribe here
> https://mailman.common-lisp.net/listinfo/ecl-devel . All archives before
> 2015-08-10 are imported to the new one and gmane stream is redirected
> (if you use it).
>
> Regards,
> Daniel
>
> James M. Lawrence writes:
>
>> Hello, the threading bugs I reported a while ago appear to have not
>> survived the migration from sourceforge, and the old pages are now
>> 404'd. There were a number of test cases, including
>>
>> (defun test (message-count worker-count)
>>   (let ((to-workers (mp:make-semaphore))
>>         (from-workers (mp:make-semaphore)))
>>     (loop repeat worker-count
>>           do (mp:process-run-function
>>               "test"
>>               (lambda ()
>>                 (loop
>>                    (mp:wait-on-semaphore to-workers)
>>                    (mp:signal-semaphore from-workers)))))
>>     (loop
>>        (loop repeat message-count
>>              do (mp:signal-semaphore to-workers))
>>        (loop repeat message-count
>>              do (mp:wait-on-semaphore from-workers))
>>        (assert (zerop (mp:semaphore-count to-workers)))
>>        (assert (zerop (mp:semaphore-count from-workers)))
>>        (format t ".")
>>        (finish-output))))
>>
>> (defun run ()
>>   (test 10000 64))
>>
>> RUN will eventually hang on all versions of ECL I've tried, including
>> the latest. Another test case was a variant of the above using a
>> homemade semaphore. I can rewrite that and other test cases, but
>> before doing so I'd like to know whether the old reports are really
>> lost or have survived in some form.
>>
>> Best,
>> lmj
>>
>> ------------------------------------------------------------------------------
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-- 
Daniel Kochmański | Poznań, Poland
;; aka jackdaniel

"Be the change that you wish to see in the world." - Mahatma Gandhi