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Re: 1.7.15-1: pthread_cancel and pthread_kill not working as expected
On 5/23/2012 10:18 AM, Corinna Vinschen wrote:
> On May 23 18:06, Corinna Vinschen wrote:
>> On May 23 10:52, Corinna Vinschen wrote:
>>> On May 22 15:25, Otto Meta wrote:
>>>>>> Testcase cancel deferred:
>>>>>> Works with 1.7.9 and 20120517 snapshot, fails (hangs) with 1.7.12-1
>>>>>> and 1.7.15-1.
>>>>> If that works in the snapshot anyway, I'm not going to look into that
>>>> It worked in the reduced testcase with sem_wait(). With read() it’s
>>>> still half-broken. See below.
>>>>>> Testcase cancel asynchronous:
>>>>>> Async cancel seems to have no effect with any tested version.
>>>>> I think I found a solution for this problem. See the comment in the
>>>>> patch at
>>>>> Please test the today's developer snapshot.
>>>> Asynchronous cancel seems to work as well as deferred cancel now. Thanks.
>>>> Both cancel types work with sem_wait() and pause() now, but for threads
>>>> blocked in read() they’re still unreliable. Only one of three blocked
>>>> threads is killed in the attached updated testcases.
>>> Just to let you know I'm working on it. This will take some time.
>>> During debugging I stumbled over a heisenbug. As soon as I remove the
>>> "Thread %i woke up just fine" printf from your test application, the
>>> read function reurns with a "Bad address" error. So far I have onlya
>>> vague hunch what the cause may be. Stay tuned.
>> Half of the solution is now checked in to CVS. The other half is a bad
>> hack to workaround a shortcoming in newlib's stdio functions. I'd rather
>> have a solution in newlib. see my request on the newlib ML:
> Ok, for the time being I checked in my workaround. Please test the
> today's developer snapshot.
I tried installing this snapshot and found most things hung.
Specifically, I ran ash in a Windows cmd window, then tried
I tried mintty too but bash hangs before I get a prompt.
"echo foo" worked fine, though.
David Rothenberger ---- firstname.lastname@example.org
Glib's Fourth Law of Unreliability:
Investment in reliability will increase until it exceeds the
probable cost of errors, or until someone insists on getting
some useful work done.
Problem reports: http://cygwin.com/problems.html
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