diff mbox series

[v3,01/35] libmultipath: add timespeccmp() utility function

Message ID 20211127151929.7727-2-mwilck@suse.com (mailing list archive)
State Not Applicable, archived
Delegated to: christophe varoqui
Headers show
Series multipathd: uxlsnr overhaul | expand

Commit Message

Martin Wilck Nov. 27, 2021, 3:18 p.m. UTC 
From: Martin Wilck <mwilck@suse.com>

Add a small utility that will be used in later patches.

Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
---
 libmultipath/libmultipath.version |  5 +++++
 libmultipath/time-util.c          | 12 ++++++++++++
 libmultipath/time-util.h          |  1 +
 3 files changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/libmultipath/libmultipath.version b/libmultipath/libmultipath.version
index eb5b5b5..c98cf7f 100644
--- a/libmultipath/libmultipath.version
+++ b/libmultipath/libmultipath.version
@@ -287,3 +287,8 @@  global:
 local:
 	*;
 };
+
+LIBMULTIPATH_9.1.0 {
+global:
+	timespeccmp;
+} LIBMULTIPATH_9.0.0;
diff --git a/libmultipath/time-util.c b/libmultipath/time-util.c
index 55f366c..2919300 100644
--- a/libmultipath/time-util.c
+++ b/libmultipath/time-util.c
@@ -49,3 +49,15 @@  void timespecsub(const struct timespec *a, const struct timespec *b,
 	res->tv_nsec = a->tv_nsec - b->tv_nsec;
 	normalize_timespec(res);
 }
+
+int timespeccmp(const struct timespec *a, const struct timespec *b)
+{
+	struct timespec tmp;
+
+	timespecsub(a, b, &tmp);
+	if (tmp.tv_sec > 0)
+		return 1;
+	if (tmp.tv_sec < 0)
+		return -1;
+	return tmp.tv_nsec > 0 ? 1 : (tmp.tv_nsec < 0 ? -1 : 0);
+}
diff --git a/libmultipath/time-util.h b/libmultipath/time-util.h
index b23d328..4a80ebd 100644
--- a/libmultipath/time-util.h
+++ b/libmultipath/time-util.h
@@ -10,5 +10,6 @@  void pthread_cond_init_mono(pthread_cond_t *cond);
 void normalize_timespec(struct timespec *ts);
 void timespecsub(const struct timespec *a, const struct timespec *b,
 		 struct timespec *res);
+int timespeccmp(const struct timespec *a, const struct timespec *b);
 
 #endif /* _TIME_UTIL_H_ */