#include <time.h>
#include <stdbool.h>
+#include <common/macros.h>
-#define MSEC_PER_SEC 1000ULL
-#define NSEC_PER_SEC 1000000000ULL
-#define NSEC_PER_MSEC 1000000ULL
-#define NSEC_PER_USEC 1000ULL
+#define MSEC_PER_SEC 1000ULL
+#define NSEC_PER_SEC 1000000000ULL
+#define NSEC_PER_MSEC 1000000ULL
+#define NSEC_PER_USEC 1000ULL
+#define USEC_PER_SEC 1000000ULL
+#define USEC_PER_MSEC 1000ULL
+#define SEC_PER_MINUTE 60ULL
+#define MINUTE_PER_HOUR 60ULL
+
+#define USEC_PER_MINUTE (USEC_PER_SEC * SEC_PER_MINUTE)
+#define USEC_PER_HOURS (USEC_PER_MINUTE * MINUTE_PER_HOUR)
+
+#define ISO8601_STR_LEN sizeof("YYYYmmddTHHMMSS+HHMM")
+
+LTTNG_HIDDEN
bool locale_supports_utf8(void);
#define NSEC_UNIT "ns"
* Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if
* input would overflow the output in milliseconds.
*/
+LTTNG_HIDDEN
int timespec_to_ms(struct timespec ts, unsigned long *ms);
/*
* timespec_abs_diff: Absolute difference between timespec.
*/
+LTTNG_HIDDEN
struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b);
+/*
+ * Format a Unix timestamp to an ISO 8601 compatible timestamp of
+ * the form "YYYYmmddTHHMMSS+HHMM" in local time. `len` must >= to
+ * ISO8601_STR_LEN.
+ *
+ * Returns 0 on success, else -1 on error.
+ */
+LTTNG_HIDDEN
+int time_to_iso8601_str(time_t time, char *str, size_t len);
+
#endif /* LTTNG_TIME_H */