Hi, I propose a new function apr_poll_modify, or modifying apr_poll_add to be able to change the interest ops/events for a designated apr_pollfd_t.
The point is to have an option to modify the request events (poll options) without the need to remove/add the same socket with different reqevents. For example initially the socket might be registered with APR_POLLIN, and then later after the pollset_poll call it might be registered as APR_POLLOUT without the need for remove/add. It can be done two ways: 1. By using existing apr_pollset_add and depending if the apr_pollfd_t is already member of the pollset or not, execute real add or modify. This would allow possibility to be backported. 2. Adding a new function apr_pollset_modify. I would prefer the first way, because it mean 'add' or 'add with different reqevents'. The only drawback I can see is that it would disallow to have a apr_pollfd_t added multiple times to the pollset (BTW I think that we wish to disable that anyhow by looking at the select.c where we explicitly search for duplicate fd's on remove). Any comments? Regards, Mladen.
