[zeromq-dev] weird bug

[Andrew Hume]

really? it wasn't mentioned in the "what's changed logs",
and represents a semantic change.
i hope someone like martin or pieter can speak to this..

but thanks for the pointer!

	andrew

On Mar 4, 2012, at 4:24 PM, Lucas Hope wrote:

> As far as I know, this is actually by design, not a bug. Multithreaded apps just interrupt the send and recv when threads are waiting on them. This used to be handled internally by zmq, but now is not.
> 
> For my own apps, I wrote a simple handler to re-call the recv if EINTR is signalled. There's also a way to have this done automagically, but I am not an authority on that.
> 
> This bit me exactly the same when I upgraded recently from 2.1.7 to 2.1.11.
> 
> Cheers,
> 
> -Luke
> 
> On Mon, Mar 5, 2012 at 10:04 AM, Andrew Hume <andrew at research.att.com> wrote:
> i am hoping this is a well-known bug with a known work-around.
> 
> i have been (more or less) happily running with 2.1.7, but for various reasons,
> i wanted to try a more recent version. so i am running with 2.1.10 and am
> getting core dumps aplenty. with code that looks like
> 
> 	ret = zmq_recv(sock, &msg, 0);
> 	assert(ret == 0);
> 
> the assert fails with an error of EINTR.
> what is going on here?
> the programs are always multithreaded, but i follow the rules on contexts etc.
> 
> 	andrew
> 
> 
> ------------------
> Andrew Hume  (best -> Telework) +1 623-551-2845
> andrew at research.att.com  (Work) +1 973-236-2014
> AT&T Labs - Research; member of USENIX and LOPSA
> 
> 
> 
> 
> 
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> 
> -- 
> ---------------------------------------------------
> Dr Lucas Hope - lucas.r.hope at skype
> Machine Learning and Software Engineering Consultant
> Melbourne, Australia
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------------------
Andrew Hume  (best -> Telework) +1 623-551-2845
andrew at research.att.com  (Work) +1 973-236-2014
AT&T Labs - Research; member of USENIX and LOPSA




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