On 8/9/07, hinko.kocevar@xxxxxxxxxxxx <hinko.kocevar@xxxxxxxxxxxx> wrote: > is there > > a way for the module to notify an application of some > > event happening? > > By using select/poll from the userspace one needs to implement similar > procedure in their (character) device driver as well - namely poll(). > This would (if properly implemented) relieve you of the need to manually > check for an event to happen. See LDD3 (http://lwn.net/Kernel/LDD3/) for > sample device driver that utilizes the poll() syscall. Isn't blocking reads also useful in this case? I would also make read calls block when there is no data available. Well, this plays nice with threads. I haven't needed select/pool yet. But in a single thread (perhaps with timeouts) select/pool seems better. (I'm no expert, but I'd like to know what you think) -- http://arhuaco.org http://emQbit.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
