***/
#include <inttypes.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
#include <stdio.h>
#include <time.h>
#define FORMAT_TIMESTAMP_RELATIVE_MAX 256
#define FORMAT_TIMESPAN_MAX 64
-#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+#define TIME_T_MAX (time_t)((UINTMAX_C(1) << ((sizeof(time_t) << 3) - 1)) - 1)
#define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) { 0ULL, 0ULL })
int parse_timestamp(const char *t, usec_t *usec);
int parse_sec(const char *t, usec_t *usec);
+int parse_time(const char *t, usec_t *usec, usec_t default_unit);
int parse_nsec(const char *t, nsec_t *nsec);
bool ntp_synced(void);
struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc);
unsigned long usec_to_jiffies(usec_t usec);
+
+static inline usec_t usec_add(usec_t a, usec_t b) {
+ usec_t c;
+
+ /* Adds two time values, and makes sure USEC_INFINITY as input results as USEC_INFINITY in output, and doesn't
+ * overflow. */
+
+ c = a + b;
+ if (c < a || c < b) /* overflow check */
+ return USEC_INFINITY;
+
+ return c;
+}