3 #ifndef HAVE_CLOCK_GETTIME
4 inline int clock_gettime(clockid_t clk_id, struct timespec *ts) {
6 if(unlikely(gettimeofday(&tv, NULL) == -1))
8 ts->tv_sec = tv.tv_sec;
9 ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
14 static inline time_t now_sec(clockid_t clk_id) {
16 if(unlikely(clock_gettime(clk_id, &ts) == -1))
21 static inline usec_t now_usec(clockid_t clk_id) {
23 if(unlikely(clock_gettime(clk_id, &ts) == -1))
25 return (usec_t)ts.tv_sec * USEC_PER_SEC + ts.tv_nsec / NSEC_PER_USEC;
28 static inline int now_timeval(clockid_t clk_id, struct timeval *tv) {
30 if(unlikely(clock_gettime(clk_id, &ts) == -1))
32 tv->tv_sec = ts.tv_sec;
33 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
37 inline time_t now_realtime_sec(void) {
38 return now_sec(CLOCK_REALTIME);
41 inline usec_t now_realtime_usec(void) {
42 return now_usec(CLOCK_REALTIME);
45 inline int now_realtime_timeval(struct timeval *tv) {
46 return now_timeval(CLOCK_REALTIME, tv);
49 inline time_t now_monotonic_sec(void) {
50 return now_sec(CLOCK_MONOTONIC);
53 inline usec_t now_monotonic_usec(void) {
54 return now_usec(CLOCK_MONOTONIC);
57 inline int now_monotonic_timeval(struct timeval *tv) {
58 return now_timeval(CLOCK_MONOTONIC, tv);
61 inline time_t now_boottime_sec(void) {
62 return now_sec(CLOCK_BOOTTIME);
65 inline usec_t now_boottime_usec(void) {
66 return now_usec(CLOCK_BOOTTIME);
69 inline int now_boottime_timeval(struct timeval *tv) {
70 return now_timeval(CLOCK_BOOTTIME, tv);
73 inline usec_t timeval_usec(struct timeval *tv) {
74 return (usec_t)tv->tv_sec * USEC_PER_SEC + tv->tv_usec;
77 inline usec_t dt_usec(struct timeval *now, struct timeval *old) {
78 usec_t ts1 = timeval_usec(now);
79 usec_t ts2 = timeval_usec(old);
80 return (ts1 > ts2) ? (ts1 - ts2) : (ts2 - ts1);
83 inline void heartbeat_init(heartbeat_t *hb)
88 usec_t heartbeat_next(heartbeat_t *hb, usec_t tick)
90 heartbeat_t now = now_monotonic_usec();
91 usec_t next = now - (now % tick) + tick;
94 sleep_usec(next - now);
95 now = now_monotonic_usec();
98 if(likely(*hb != 0ULL)) {
99 usec_t dt = now - *hb;
101 if(unlikely(dt / tick > 1))
102 error("heartbeat missed between %llu usec and %llu usec", *hb, now);
111 inline usec_t heartbeat_dt_usec(heartbeat_t *hb)
115 return now_monotonic_usec() - *hb;