[zeromq-dev] Signaler.cpp hangs on windows intermittently

[Pieter Hintjens]

Hi Shueng Chaun,

Thanks for this. I've backported these two commits to zeromq3-x
stable. Do you know if there are Jira issues for them?

-Pieter

On Thu, May 16, 2013 at 7:06 AM, KIU Shueng Chuan <nixchuan at gmail.com> wrote:
> Hi Pieter,
>
> This is the commit in master for the above-mentioned signaler.cpp assertion:
> Release Event on error
> 8c71ac47e83dc4ae116ab4abb5e4a76e8249d888
>
> Another change that might help Windows (especially XP) users is the
> following. It avoids the socketpair emulation in win32 from staying in the
> TIME_WAIT state after close.
> avoid TIME_WAIT socket structures
> 151a80619bf3f9c4696788f79cd2c934ed26246d
>
>
>
>
> On Tue, May 7, 2013 at 3:54 AM, Pieter Hintjens <ph at imatix.com> wrote:
>>
>> Has this been fixed on master but not backported to 3.x?
>>
>> Usually it's up to individual contributors to either do the backport
>> (a git cherrypick) or ask someone to help do it.
>>
>> I'm happy to backport the fix for the next 3.2.4 release if someone
>> tells me what commit it was.
>>
>> -Pieter
>>
>> On Mon, May 6, 2013 at 8:32 PM, Felipe Farinon
>> <felipe.farinon at powersyslab.com> wrote:
>> > Why wasn't this patch released yet?
>> >
>> > In my application i'm trying to fix it by using Mutex considering the
>> > case that waiting (WaitForSingleObject) on the mutex results in
>> > WAIT_ABANDONED. It seems that it has been fixed. Should I submit a
>> > patch?
>> >
>> > Em 19/03/2013 16:45, Pau escreveu:
>> >> Hi,
>> >>
>> >> I had this problem some weeks ago. This was my problem:
>> >>
>> >> I do not know all possible reasons to generate a fatal wsa_assert(..)
>> >> but there is at least one:
>> >>
>> >> I have seen that in XP it is possible that line 301  rc = connect (*w_,
>> >> (sockaddr *) &addr, sizeof (addr)); returns an error when a socket
>> >> tries
>> >> to connect to 5905 and this has happened many times.
>> >> Windows uses port numbers starting near 1400 and XP has a limit at
>> >> 5000.
>> >> In W7 this does not look as a problem because maximum is 65000
>> >> It sounds as if the number was big enough but apart from the fact that
>> >> ZMQ uses a big number of connections (at least in my tests) I have
>> >> experienced that Windows jumps port numbers by 7, so 5000 happens
>> >> sometimes with catastrophic consequences.
>> >>
>> >> Perhaps there are other reasons (actually this problem does not happen
>> >> like that in W7) anyway whatever crashes between
>> >>
>> >> HANDLE sync = CreateEvent (NULL, FALSE, TRUE, TEXT
>> >> ("zmq-signaler-port-sync"));
>> >> and
>> >> SetEvent (sync);
>> >>
>> >> will leave the event signaled and any other application in the system
>> >> will hang. Closing all apps in a system fixes it.
>> >>
>> >> KIU Shueng Chuan submitted a patch that sets the event when crash
>> >> avoiding other applications to ge hanged:
>> >>
>> >> https://github.com/zeromq/libzmq/pull/514
>> >>
>> >> That worked for me...
>> >>
>> >> If you search for "zmq-signaler-port-sync" in previous mails in this
>> >> list you will see the complete thread.
>> >>
>> >> best,
>> >>
>> >> Pau
>> >>
>> >> El 19/03/2013 17:18, Felipe Farinon escribió:
>> >>> Hi,
>> >>>
>> >>> The code
>> >>> HANDLE sync = CreateEvent (&sa, FALSE, TRUE, TEXT
>> >>> ("Global\\zmq-signaler-port-sync"));
>> >>>
>> >>> in signaler.cpp:262 hangs intermittently when starting zeromq context
>> >>> through zmq_init in my application. I'm not able to reproduce this bug
>> >>> with a minimal test case. I'm running my application in a Windows 7
>> >>> with
>> >>> zeromq compiled with VS2010.
>> >>> _______________________________________________
>> >>> zeromq-dev mailing list
>> >>> zeromq-dev at lists.zeromq.org
>> >>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>> >>>
>> >> _______________________________________________
>> >> zeromq-dev mailing list
>> >> zeromq-dev at lists.zeromq.org
>> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>> >>
>> >
>> > _______________________________________________
>> > zeromq-dev mailing list
>> > zeromq-dev at lists.zeromq.org
>> > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>> _______________________________________________
>> zeromq-dev mailing list
>> zeromq-dev at lists.zeromq.org
>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
>
>
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>