X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ftime.h;fp=src%2Fcommon%2Ftime.h;h=8a7dd958ffeeb6b86ef4a1ce1b11cf1c10a6a42b;hp=81770779bdc90a898b1fefe1bbb8f88ef2d604fd;hb=2daf65025e0fe5c15179dc4bfb26f875e3d31a26;hpb=9a6545985844978f34f88b82bf1bcd649968c0a3

diff --git a/src/common/time.h b/src/common/time.h
index 81770779b..8a7dd958f 100644
--- a/src/common/time.h
+++ b/src/common/time.h
@@ -19,9 +19,24 @@
 #ifndef LTTNG_TIME_H
 #define LTTNG_TIME_H
 
+#include <time.h>
+
 #define MSEC_PER_SEC	1000ULL
 #define NSEC_PER_SEC	1000000000ULL
 #define NSEC_PER_MSEC	1000000ULL
 #define NSEC_PER_USEC	1000ULL
 
+/*
+ * timespec_to_ms: Convert timespec to milliseconds.
+ *
+ * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if
+ * input would overflow the output in milliseconds.
+ */
+int timespec_to_ms(struct timespec ts, unsigned long *ms);
+
+/*
+ * timespec_abs_diff: Absolute difference between timespec.
+ */
+struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b);
+
 #endif /* LTTNG_TIME_H */