Merge remote-tracking branch 'github/pr/387'

[collectd.git] / src / utils_time.h

diff --git a/src/utils_time.h b/src/utils_time.h
index fecf5447780929c2fee24dd0c818d7d8bb1a2e40..0081957dc514d8fdb9ba513132c726b639503d07 100644 (file)
--- a/src/utils_time.h
+++ b/src/utils_time.h
@@ -32,7 +32,9 @@
  * manner is that comparing times and calculating differences is as simple as
  * it is with "time_t", i.e. a simple integer comparison / subtraction works.
  */
-typedef uint64_t cdtime_t;
+/* 
+ * cdtime_t is defined in "collectd.h" */
+/* typedef uint64_t cdtime_t; */
 
 /* 2^30 = 1073741824 */
 #define TIME_T_TO_CDTIME_T(t) (((cdtime_t) (t)) * 1073741824)
@@ -41,14 +43,34 @@ typedef uint64_t cdtime_t;
 #define CDTIME_T_TO_DOUBLE(t) (((double) (t)) / 1073741824.0)
 #define DOUBLE_TO_CDTIME_T(d) ((cdtime_t) ((d) * 1073741824.0))
 
-#define US_TO_CDTIME_T(us) ((cdtime_t) (((double) (us)) * 1073.741824))
-#define NS_TO_CDTIME_T(ns) ((cdtime_t) (((double) (ns)) * 1.073741824))
+#define MS_TO_CDTIME_T(ms) ((cdtime_t)    (((double) (ms)) * 1073741.824))
+#define CDTIME_T_TO_MS(t)  ((long)        (((double) (t))  / 1073741.824))
+#define US_TO_CDTIME_T(us) ((cdtime_t)    (((double) (us)) * 1073.741824))
+#define CDTIME_T_TO_US(t)  ((suseconds_t) (((double) (t))  / 1073.741824))
+#define NS_TO_CDTIME_T(ns) ((cdtime_t)    (((double) (ns)) * 1.073741824))
+#define CDTIME_T_TO_NS(t)  ((long)        (((double) (t))  / 1.073741824))
 
-#define TIMEVAL_TO_CDTIME_T(tv) (TIME_T_TO_CDTIME_T ((tv).tv_sec) \
-               + US_TO_CDTIME_T ((tv).tv_usec))
-#define TIMESPEC_TO_CDTIME_T(ts) (TIME_T_TO_CDTIME_T ((ts).tv_sec) \
-               + NS_TO_CDTIME_T ((ts).tv_nsec))
+#define CDTIME_T_TO_TIMEVAL(cdt,tvp) do {                                    \
+        (tvp)->tv_sec = CDTIME_T_TO_TIME_T (cdt);                            \
+        (tvp)->tv_usec = CDTIME_T_TO_US ((cdt) % 1073741824);                \
+} while (0)
+#define TIMEVAL_TO_CDTIME_T(tv) (TIME_T_TO_CDTIME_T ((tv)->tv_sec)           \
+    + US_TO_CDTIME_T ((tv)->tv_usec))
+
+#define CDTIME_T_TO_TIMESPEC(cdt,tsp) do {                                   \
+  (tsp)->tv_sec = CDTIME_T_TO_TIME_T (cdt);                                  \
+  (tsp)->tv_nsec = CDTIME_T_TO_NS ((cdt) % 1073741824);                      \
+} while (0)
+#define TIMESPEC_TO_CDTIME_T(ts) (TIME_T_TO_CDTIME_T ((ts)->tv_sec)           \
+    + NS_TO_CDTIME_T ((ts)->tv_nsec))
 
 cdtime_t cdtime (void);
 
+/* format a cdtime_t value in ISO 8601 format:
+ * returns the number of characters written to the string (not including the
+ * terminating null byte or 0 on error; the function ensures that the string
+ * is null terminated */
+size_t cdtime_to_iso8601 (char *s, size_t max, cdtime_t t);
+
 #endif /* UTILS_TIME_H */
+/* vim: set sw=2 sts=2 et : */