path: root/include/osmocom/core/select.h
diff options
authorHarald Welte <laforge@gnumonks.org>2017-12-03 16:13:39 +0100
committerHarald Welte <laforge@gnumonks.org>2018-05-10 10:33:54 +0200
commitea4d8939af7204bc6ca76144354ef4d70189eaa3 (patch)
tree9e9259f5a73620508ac4e2dedcff7e6cf35482fc /include/osmocom/core/select.h
parentb82a407a4924f51844c01e1627c3bb01db210c0f (diff)
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
Diffstat (limited to 'include/osmocom/core/select.h')
1 files changed, 7 insertions, 0 deletions
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 <osmocom/core/linuxlist.h>
#include <stdbool.h>
+#include <time.h>
/*! \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);
/*! @} */