tree 9e9259f5a73620508ac4e2dedcff7e6cf35482fc
parent b82a407a4924f51844c01e1627c3bb01db210c0f
author Harald Welte <laforge@gnumonks.org> 1512314019 +0100
committer Harald Welte <laforge@gnumonks.org> 1525941234 +0200

Add osmo_timerfd_* functions for osmo_fd-wrapped timerfd

Linux offers file descriptor based periodic (interval) timers,
which can achieve a higher precision than our userspace based
timers and which can be slave'd to CLOCK_MONOTINIC or other clock
sources.  Let's add some code for osmo_fd wrapped versions that
integrate well with our select() abstraction.

The code has been used in osmo-bts-trx since June 2017 (change-id
I51b19adde14ebb7ef3bb863d45e06243c323e22e), and I'm just renaming
and moving it to libosmocore here.  After a merge, the osmo-bts
implementations can be removed in favor if this one.

Change-Id: Ibeffba7c997252c003723bcd5d14122c4ded2fe7