X-Git-Url: https://git.tokkee.org/?p=sysdb.git;a=blobdiff_plain;f=src%2Finclude%2Fcore%2Ftime.h;h=c48a2e1329b6bb8371507fa382dcf90601591a18;hp=30e920b6a0905de566874e3a9afddceaee4259cb;hb=f78d30d42f9fe3b58f1c2132cafe4c8687b8bd46;hpb=fa5c130fbd0c75f3c47f1b28feb8d76a4791a93e

diff --git a/src/include/core/time.h b/src/include/core/time.h
index 30e920b..c48a2e1 100644
--- a/src/include/core/time.h
+++ b/src/include/core/time.h
@@ -41,7 +41,7 @@ extern "C" {
  * The time, in nano-seconds, since the epoch.
  */
 typedef uint64_t sdb_time_t;
-#define PRIscTIME PRIu64
+#define PRIsdbTIME PRIu64
 
 #define SECS_TO_SDB_TIME(s) ((sdb_time_t)(s) * (sdb_time_t)1000000000)
 #define SDB_TIME_TO_SECS(t) ((t) / (sdb_time_t)1000000000)
@@ -54,6 +54,19 @@ typedef uint64_t sdb_time_t;
 #define TIMESPEC_TO_SDB_TIME(ts) (SECS_TO_SDB_TIME((ts).tv_sec) \
 		+ NSECS_TO_SDB_TIME((ts).tv_nsec))
 
+/*
+ * Interval constants:
+ * Each constant specifies the time interval, in nano-seconds, of the named
+ * time-frame. Year, month, and day are approximations which do not work well
+ * for very large time intervals.
+ */
+extern const sdb_time_t SDB_INTERVAL_YEAR;
+extern const sdb_time_t SDB_INTERVAL_MONTH;
+extern const sdb_time_t SDB_INTERVAL_DAY;
+extern const sdb_time_t SDB_INTERVAL_HOUR;
+extern const sdb_time_t SDB_INTERVAL_MINUTE;
+extern const sdb_time_t SDB_INTERVAL_SECOND;
+
 sdb_time_t
 sdb_gettime(void);
 
@@ -61,7 +74,24 @@ int
 sdb_sleep(sdb_time_t reg, sdb_time_t *rem);
 
 size_t
-sdb_strftime(char *s, size_t len, const char *format, sdb_time_t);
+sdb_strftime(char *s, size_t len, const char *format, sdb_time_t)
+		__attribute__((format(strftime, 3, 0)));
+
+size_t
+sdb_strfinterval(char *s, size_t len, sdb_time_t interval);
+
+/*
+ * sdb_strpunit:
+ * Parse the specified string as a time unit.
+ * "Y" (year), "M" (month), "D" (day), "h" (hour), "m" (minute), "s" (second),
+ * "ms" (milli-second), "us" (micro-second), "ns" (nano-second).
+ *
+ * Returns:
+ *  - the time interval corresponding to the specified unit on success
+ *  - 0 else
+ */
+sdb_time_t
+sdb_strpunit(const char *s);
 
 #ifdef __cplusplus
 } /* extern "C" */