shared: add formats-util.h

[elogind.git] / src / shared / time-util.h

diff --git a/src/shared/time-util.h b/src/shared/time-util.h
index 69a48c686bebd4a8509df511fac6bbb05c8b77ed..fca8a4db9b85324c1d9329daef58f0b15d12b9a0 100644 (file)
--- a/src/shared/time-util.h
+++ b/src/shared/time-util.h
@@ -37,32 +37,37 @@ typedef struct dual_timestamp {
         usec_t monotonic;
 } dual_timestamp;
 
-#define MSEC_PER_SEC  ((usec_t) 1000ULL)
+#define USEC_INFINITY ((usec_t) -1)
+#define NSEC_INFINITY ((nsec_t) -1)
+
+#define MSEC_PER_SEC  1000ULL
 #define USEC_PER_SEC  ((usec_t) 1000000ULL)
 #define USEC_PER_MSEC ((usec_t) 1000ULL)
-#define NSEC_PER_SEC  ((usec_t) 1000000000ULL)
-#define NSEC_PER_MSEC ((usec_t) 1000000ULL)
-#define NSEC_PER_USEC ((usec_t) 1000ULL)
+#define NSEC_PER_SEC  ((nsec_t) 1000000000ULL)
+#define NSEC_PER_MSEC ((nsec_t) 1000000ULL)
+#define NSEC_PER_USEC ((nsec_t) 1000ULL)
 
 #define USEC_PER_MINUTE ((usec_t) (60ULL*USEC_PER_SEC))
-#define NSEC_PER_MINUTE ((usec_t) (60ULL*NSEC_PER_SEC))
+#define NSEC_PER_MINUTE ((nsec_t) (60ULL*NSEC_PER_SEC))
 #define USEC_PER_HOUR ((usec_t) (60ULL*USEC_PER_MINUTE))
-#define NSEC_PER_HOUR ((usec_t) (60ULL*NSEC_PER_MINUTE))
+#define NSEC_PER_HOUR ((nsec_t) (60ULL*NSEC_PER_MINUTE))
 #define USEC_PER_DAY ((usec_t) (24ULL*USEC_PER_HOUR))
-#define NSEC_PER_DAY ((usec_t) (24ULL*NSEC_PER_HOUR))
+#define NSEC_PER_DAY ((nsec_t) (24ULL*NSEC_PER_HOUR))
 #define USEC_PER_WEEK ((usec_t) (7ULL*USEC_PER_DAY))
-#define NSEC_PER_WEEK ((usec_t) (7ULL*NSEC_PER_DAY))
+#define NSEC_PER_WEEK ((nsec_t) (7ULL*NSEC_PER_DAY))
 #define USEC_PER_MONTH ((usec_t) (2629800ULL*USEC_PER_SEC))
-#define NSEC_PER_MONTH ((usec_t) (2629800ULL*NSEC_PER_SEC))
+#define NSEC_PER_MONTH ((nsec_t) (2629800ULL*NSEC_PER_SEC))
 #define USEC_PER_YEAR ((usec_t) (31557600ULL*USEC_PER_SEC))
-#define NSEC_PER_YEAR ((usec_t) (31557600ULL*NSEC_PER_SEC))
+#define NSEC_PER_YEAR ((nsec_t) (31557600ULL*NSEC_PER_SEC))
 
 #define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
 #define FORMAT_TIMESTAMP_WIDTH 28 /* when outputting, assume this width */
 #define FORMAT_TIMESTAMP_RELATIVE_MAX 256
 #define FORMAT_TIMESPAN_MAX 64
 
-#define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) { 0, 0 })
+#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+
+#define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) { 0ULL, 0ULL })
 
 usec_t now(clockid_t clock);
 
@@ -71,8 +76,8 @@ dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u);
 dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u);
 
 static inline bool dual_timestamp_is_set(dual_timestamp *ts) {
-        return ((ts->realtime > 0 && ts->realtime != (usec_t) -1) ||
-                (ts->monotonic > 0 && ts->monotonic != (usec_t) -1));
+        return ((ts->realtime > 0 && ts->realtime != USEC_INFINITY) ||
+                (ts->monotonic > 0 && ts->monotonic != USEC_INFINITY));
 }
 
 usec_t timespec_load(const struct timespec *ts) _pure_;
@@ -82,7 +87,9 @@ usec_t timeval_load(const struct timeval *tv) _pure_;
 struct timeval *timeval_store(struct timeval *tv, usec_t u);
 
 char *format_timestamp(char *buf, size_t l, usec_t t);
+char *format_timestamp_utc(char *buf, size_t l, usec_t t);
 char *format_timestamp_us(char *buf, size_t l, usec_t t);
+char *format_timestamp_us_utc(char *buf, size_t l, usec_t t);
 char *format_timestamp_relative(char *buf, size_t l, usec_t t);
 char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy);
 
@@ -100,3 +107,5 @@ int get_timezones(char ***l);
 bool timezone_is_valid(const char *name);
 
 clockid_t clock_boottime_or_monotonic(void);
+
+#define xstrftime(buf, fmt, tm) assert_se(strftime(buf, ELEMENTSOF(buf), fmt, tm) > 0)