On Wed, Sep 26, 2012 at 7:49 PM, Rahul Bedarkar <rpal143@xxxxxxxxx> wrote:
Hi,
I have to capture kernel udev events through libudev. One of API
provides asynchronous events by reading on file descriptor. I found
that there two ways to do that.
1) select call
I guessed when u called select() it will block, and so u can be very efficient - doing nothing until necessary, but also resource being used up - as the process is solely dedicated to listenting for event only.
2) epoll
good thing is u can parallel process other stuff at the same time, if after polling the replies from udev is not back yet. but the bad thing is response may not be so immediate, as u may be doing something else when the udev event comes in.
I also found that epoll is smarter and meant to replace old select call.
What are your thoughts on these ? Which one is better ?
Thanks
Rahul B.
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Regards,
Peter Teoh
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
