[erlang-questions] erts design information/experts around?

Raimo Niskanen <>
Thu Jul 3 17:53:03 CEST 2008


On Thu, Jul 03, 2008 at 10:12:27AM -0500, Paul Fisher wrote:
> I sent the following note to erlang-bugs two days ago and have not seen
> anyone comment.
>  
> > We have a system where we run lots of linked-in driver ports that get
> > created/used/closed frequently and sometimes very quickly.  Today when
> > several open_port/2, port_command/2 and port_close/1 cycles happened
> > rapid succession, a SIGSEGV occurrect in erl_bif_ddl.c:
> > 
> > Program received signal SIGSEGV, Segmentation fault.
> > [Switching to Thread 1125235040 (LWP 12087)]
> > 0x0000000000449712 in erl_ddll_try_unload_2 (p=0x2aaaab11fc90,
> >     name_term=659339, options=46912503328425) at beam/erl_bif_ddll.c:592
> > 
> 
> ???This is not the first email about runtime internals that I have sent
> which has gone without comment, and so I am wondering if the people with
> detailed knowledge of the runtime do not follow these lists.
> 

They are on vacation. We would need both the experts on
SMP and the experts on Windows debugging.

Were it on Unix we would have requested a core dump,
but on Windows I do not know if there is such a thing,
or if there has to be a VisualStudio 8 installation
plus source code on the failing machine. The experts
on Windows debugging would know.

> Is there a better place/way to get in contact?  (What I am really
> looking for is a discussion of the overall internals design of the smp
> runtime structures, so that I can get a jump start on fixing these types
> of thing myself.)

Erlang-questions is a good place. Here there are lots of
smart guys that not all read erlang-bugs and may
have a clue.

> 
> thanks in advance,
> 
> 
> -- 
> paul
> 
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> 
> http://www.erlang.org/mailman/listinfo/erlang-questions

-- 

/ Raimo Niskanen, Erlang/OTP, Ericsson AB



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