[zeromq-dev] Is it possible to get deadlocks in ZeroMQ applications?

[Apostolis Xekoukoulotakis]

Here are 2 articles that I find interesting:

http://james-iry.blogspot.gr/2009/04/erlang-style-actors-are-all-about.html
http://james-iry.blogspot.gr/2009/04/erlang-style-actors-are-all-about_16.html


2013/4/8 Eric Hill <eric at ijack.net>

> Agreed.  The term deadlock usually indicates two bits of code contending
> for the same resource.  In a message-oriented system, the message becomes
> the resource, and since one bit of code always hands the resource off to
> another bit of code, that type of deadlock cannot happen.
>
>
> On Mon, Apr 8, 2013 at 12:22 PM, A. Mark <gougolith at gmail.com> wrote:
>
>> Yes that could happen, I would say that would not be considered a
>> deadlock in a classic sense. That's more like a protocol design flaw,
>> you're blocked on a message.
>>
>>
>> On Mon, Apr 8, 2013 at 10:16 AM, Timothee Besset <ttimo at ttimo.net> wrote:
>>
>>> I've also had deadlock cases where two threads would use several zmq
>>> sockets to communicate with each other (for instance with both a REP/REQ
>>> and a PAIR)
>>>
>>> It's easy in those cases to have deadlocks, unless you use a poll to
>>> wait on all of them at the same time.
>>>
>>> TTimo
>>>
>>>
>>> On Mon, Apr 8, 2013 at 12:04 PM, Garrett Smith <g at rre.tt> wrote:
>>>
>>>> On Mon, Apr 8, 2013 at 11:52 AM, A. Mark <gougolith at gmail.com> wrote:
>>>> > Yes I agree, I've not had a single deadlock in a classic sense since
>>>> using
>>>> > message queues. But this statement is like saying I've hand not  a car
>>>> > accident since I've been riding a bike. You can still lock up your
>>>> code but
>>>> > it will not be a classic deadlock. I guess you could incorrectly code
>>>> > something with message queues and have it lock up occasionally.
>>>>
>>>> The one area I keep an eye on in shared-nothing single threaded
>>>> applications is accidentally waiting on one's self -- this is easy to
>>>> do, but also easy to detect and fix!
>>>>
>>>> Garrett
>>>> _______________________________________________
>>>> 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
>
>


-- 


Sincerely yours,

     Apostolis Xekoukoulotakis
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.zeromq.org/pipermail/zeromq-dev/attachments/20130408/53225e25/attachment.htm>