From ea4d8939af7204bc6ca76144354ef4d70189eaa3 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sun, 3 Dec 2017 16:13:39 +0100 Subject: 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 --- include/osmocom/core/select.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/osmocom/core') diff --git a/include/osmocom/core/select.h b/include/osmocom/core/select.h index b6fed3c7..1ba6b832 100644 --- a/include/osmocom/core/select.h +++ b/include/osmocom/core/select.h @@ -6,6 +6,7 @@ #include #include +#include /*! \defgroup select Select loop abstraction * @{ @@ -54,4 +55,10 @@ struct osmo_fd *osmo_fd_get_by_fd(int fd); int osmo_fd_fill_fds(void *readset, void *writeset, void *exceptset); int osmo_fd_disp_fds(void *readset, void *writeset, void *exceptset); +/* timerfd integration */ +int osmo_timerfd_disable(struct osmo_fd *ofd); +int osmo_timerfd_schedule(struct osmo_fd *ofd, const struct timespec *first, + const struct timespec *interval); +int osmo_timerfd_setup(struct osmo_fd *ofd, int (*cb)(struct osmo_fd *, unsigned int), void *data); + /*! @} */ -- cgit v1.2.3