[erlang-questions] enif_send from a thread after NIF returns

Rapsey <>
Tue Oct 26 15:22:20 CEST 2010


On Tue, Oct 26, 2010 at 3:12 PM, Joel Reymont <> wrote:

>
> On Oct 26, 2010, at 2:09 PM, Rapsey wrote:
>
> > Where in the documentation does it say that? I launch my socket accept
> thread in load.
>
> man erl_driver
>
> /erl_drv_thread_create
>
> ---
>       The driver creating the thread has the  respon-
>       sibility  of joining the thread, via erl_drv_thread_join() , before
> the
>       driver is unloaded. It is not possible to  create  "detached"
>  threads,
>       i.e., threads that don't need to be joined.
>
>   Warning:
>       All  created  threads  need  to  be  joined  by the driver before it
> is
>       unloaded. If the driver fails to join all threads created before it
>  is
>       unloaded,  the  runtime  system will most likely crash when the code
> of
>       the driver is unloaded.
> ---
>
> In the context of a NIF, "driver unloaded" seems to be "NIF exits". The VM
> consistently crashes when I skip the join after creating threads.
>

Does unload/reload/upgrade get called? I have printf in those so that I know
what's going on.


Sergej


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