Hi Simon!
About the I related with the WIP_NETCONN_SEM_PER_THREAD parameter was the
follow topic :
https://lists.gnu.org/archive/html/lwip-devel/2015-10/msg00126.html
Maybe my association was not good...
OK, is recommended enable the parameter reporteded!
But how I wrote, I have had crash on assert (tcpip.c), do you can suggest
anything about that assert-fail, even with WIP_NETCONN_SEM_PER_THREAD
parameter disabled?
Thank you very much!
Em dom, 13 de jan de 2019 às 06:17, goldsi...@gmx.de <goldsi...@gmx.de>
escreveu:
> Am 12.01.2019 um 14:20 schrieb Norberto R. de Goes Jr.:
> > Hi all.
> >
> > I have used the lwip stack in my project with multithread, no RAM
> > limitation and running on Linux SO.
> >
> > Does I need to define LWIP_NETCONN_SEM_PER_THREAD parameter (default =
> > 0) ? Is it recommended or mandatory?
>
> It is recommended because it is faster: without it, socket threads
> create a new semaphore for many calls (to synchronize wih tcpip_thread).
> By enabling it (and implementing thread-local storage) every thread only
> creates one semaphore and reuses it many times.
>
> >
> > I question that because I am having crash in
> > ".../lwip/src/api/tcpip.c": LWIP_ASSERT("tcpip_thread: invalid
> > message", 0);
> > OBS: msg->type = 2962209658 (invalid)
>
> I don't think this messages is related to LWIP_NETCONN_SEM_PER_THREAD.
> How do you come to this conclusion?
>
> Regards,
> Simon
>
> >
> > Commits in use (SHA-1) :
> > lwip: c8b65f6c1d2aaa6b3bb1b3d600e54137f294a2d6
> > lwip-contrib: 4e553f7b3d3af4ac1f3f6c70f38371e4395fdccd
> >
> > Thanks.
> > Norberto Goes
> >
> > --
> > Norberto R. de Goes Jr.
> > CPqD - DRC
> > Tel.: +55 19 3705-4241 / Fax: +55 19 3705-6125
> > norbe...@cpqd.com.br <mailto:speri...@cpqd.com.br>
> > www.cpqd.com.br <http://www.cpqd.com.br/>
> >
> >
> >
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> > lwip-users@nongnu.org
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> >
>
>
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--
Norberto R. de Goes Jr.
CPqD - DRC
Tel.: +55 19 3705-4241 / Fax: +55 19 3705-6125
norbe...@cpqd.com.br <speri...@cpqd.com.br>
www.cpqd.com.br
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