legOS : 2738


Robotics / RCX / legOS / 2738	2737 \| 2739

Subject:	Re: is it possible to remove lnp_handler while running ?
Newsgroups:	lugnet.robotics.rcx.legos
Date:	Tue, 16 Jul 2002 16:55:04 GMT
Viewed:	2275 times

"kenneth johansen" <kennethj@stud.cs.uit.no> wrote in message news:3D343FAA.17247640@stud.cs.uit.no... > another dumb question about lnp:) > > i was wondering if it possible to do something like > lnp_addressing_remove_handler(PORT,handler); > as opposed to lnp_addressing_set_handler(PORT,handler); > > after much debugging i think i have traced my problem to the fact that > lnp_addressing_write hangs if i recieve a message at the same time as i > try to send. > > so i kinda wondered if theres any way to remove the handler for a while > and then set it again. > > anyone know ? > > regards > kenneth johansen > kennethj@stud.cs.uit.no > > I imagine you could just do something like lnp_addressing_set_handler( PORT, (lnp_addressing_handler_t) NULL ); I'm also curious as to why lnp_addressing_write hangs for you... I don't remember ever having problems with two bricks reading and writing concurrently.

Message has 2 Replies:

		Re: is it possible to remove lnp_handler while running ?
heh.. tried that.. no luck :( sigh..after yet a couple of hours trying to figgure this out, im 99,99% sure that the problem is in lnp_addressing_write. could this be that the function is not thread safe ? but then again i have protected the function (...) (22 years ago, 16-Jul-02, to lugnet.robotics.rcx.legos)

		Re: is it possible to remove lnp_handler while running ?
no..wait.. im fairly sertain that i did have a context shift while in lnp_addressing_write..after all .could that be why it never returns ? Falco, i tried looking at your thread safe example in emulegos, but im afraid i didnt understand much of (...) (22 years ago, 16-Jul-02, to lugnet.robotics.rcx.legos)

Message is in Reply To:

		is it possible to remove lnp_handler while running ?
another dumb question about lnp:) i was wondering if it possible to do something like lnp_addressing_remov...,handler); as opposed to lnp_addressing_set_h...,handler); after much debugging i think i have traced my problem to the fact that (...) (22 years ago, 16-Jul-02, to lugnet.robotics.rcx.legos)

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