From b428952eefd250d6d4ce77ad89325e9803940d11 Mon Sep 17 00:00:00 2001
From: Björn Jacke <bj@sernet.de>
Date: Mon, 6 Sep 2010 20:27:24 +0200
Subject: lib/util: add time_mono() for monotonic time a la time()

---
 lib/util/time.c | 21 +++++++++++++++++++++
 lib/util/time.h |  5 +++++
 2 files changed, 26 insertions(+)

(limited to 'lib')

diff --git a/lib/util/time.c b/lib/util/time.c
index 5ecf93cb77c..ed3b4f8e301 100644
--- a/lib/util/time.c
+++ b/lib/util/time.c
@@ -65,6 +65,27 @@ _PUBLIC_ void clock_gettime_mono(struct timespec *tp)
 	}
 }
 
+/**
+a wrapper to preferably get the monotonic time in seconds
+as this is only second resolution we can use the cached
+(and much faster) COARS clock variant
+**/
+_PUBLIC_ time_t time_mono(time_t *t)
+{
+	struct timespec tp;
+	int rc = -1;
+#ifdef CLOCK_MONOTONIC_COARSE
+	rc = clock_gettime(CLOCK_MONOTONIC_COARSE,&tp);
+#endif
+	if (rc != 0) {
+		clock_gettime_mono(&tp);
+	}
+	if (t != NULL) {
+		*t = tp.tv_sec;
+	}
+	return tp.tv_sec;
+}
+
 
 #define TIME_FIXUP_CONSTANT 11644473600LL
 
diff --git a/lib/util/time.h b/lib/util/time.h
index 720a262b292..345382b80a0 100644
--- a/lib/util/time.h
+++ b/lib/util/time.h
@@ -55,6 +55,11 @@ a wrapper to preferably get the monotonic time
 **/
 _PUBLIC_ void clock_gettime_mono(struct timespec *tp);
 
+/**
+a wrapper to preferably get the monotonic time in s
+**/
+_PUBLIC_ time_t time_mono(time_t *t);
+
 /**
 interpret an 8 byte "filetime" structure to a time_t
 It's originally in "100ns units since jan 1st 1601"
-- 
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