X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fcommon%2Ftime.h;h=894ab9259a135a3f7816d74e3475d268ec328b13;hb=3f322f1a1a1ce2fc1354699f11ac483d7a3cd5fc;hp=81770779bdc90a898b1fefe1bbb8f88ef2d604fd;hpb=395d6b02dda3db1acd08936f49c1dc8efc48e613;p=lttng-tools.git

diff --git a/src/common/time.h b/src/common/time.h
index 81770779b..894ab9259 100644
--- a/src/common/time.h
+++ b/src/common/time.h
@@ -19,9 +19,34 @@
 #ifndef LTTNG_TIME_H
 #define LTTNG_TIME_H
 
+#include <time.h>
+#include <stdbool.h>
+
 #define MSEC_PER_SEC	1000ULL
 #define NSEC_PER_SEC	1000000000ULL
 #define NSEC_PER_MSEC	1000000ULL
 #define NSEC_PER_USEC	1000ULL
 
+bool locale_supports_utf8(void);
+
+#define NSEC_UNIT       "ns"
+#define USEC_UNIT       (locale_supports_utf8() ? "µs" : "us")
+#define MSEC_UNIT       "ms"
+#define SEC_UNIT        "s"
+#define MIN_UNIT        "m"
+#define HR_UNIT         "h"
+
+/*
+ * 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 */