tree 20f0414f21780ad22256bf1fd0af89f7c828b68f
parent 3f54de4cf052b7706723a9bb46acf8e0a2cff294
author Jeremy Kerr <jk@ozlabs.org> 1457595361 +0800
committer Jeremy Kerr <jk@ozlabs.org> 1457595361 +0800

Introduce pollers

Handlers may way to poll on multiple file descriptors. This change
introduces pollers, which are registered with:
console_register_poller(), which provides a function to call when a
specified fd has pollable events.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>