diff options
| author | Rémi Lefèvre <remi.lefevre@parrot.com> | 2016-12-13 16:12:23 +0100 |
|---|---|---|
| committer | Rémi Lefèvre <remi.lefevre@parrot.com> | 2017-01-23 17:17:25 +0100 |
| commit | c032b7be6773ba76c0560bfed83d2b0b86b267d6 (patch) | |
| tree | 18f9394f703137542eb5455246564909b78073fb /src/clocks.h | |
| parent | ecff88e2704c654d3df8d18f29820b359fe239be (diff) | |
introduce heartbeat API using monotonic clock
Signed-off-by: Rémi Lefèvre <remi.lefevre@parrot.com>
Diffstat (limited to 'src/clocks.h')
| -rw-r--r-- | src/clocks.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/clocks.h b/src/clocks.h index c1b8e70179..39c0436f83 100644 --- a/src/clocks.h +++ b/src/clocks.h @@ -12,6 +12,10 @@ struct timespec { typedef int clockid_t; #endif +typedef unsigned long long usec_t; + +typedef usec_t heartbeat_t; + #ifndef HAVE_CLOCK_GETTIME int clock_gettime(clockid_t clk_id, struct timespec *ts); #endif @@ -35,8 +39,6 @@ int clock_gettime(clockid_t clk_id, struct timespec *ts); #endif #endif -typedef unsigned long long usec_t; - #define NSEC_PER_SEC 1000000000ULL #define NSEC_PER_MSEC 1000000ULL #define NSEC_PER_USEC 1000ULL @@ -89,4 +91,14 @@ extern usec_t now_boottime_usec(void); extern usec_t timeval_usec(struct timeval *ts); extern usec_t dt_usec(struct timeval *now, struct timeval *old); +extern void heartbeat_init(heartbeat_t *hb); + +/* Sleeps until next multiple of tick using monotonic clock. + * Returns elapsed time in microseconds since previous heartbeat + */ +extern usec_t heartbeat_next(heartbeat_t *hb, usec_t tick); + +/* Returns elapsed time in microseconds since last heartbeat */ +extern usec_t heartbeat_dt_usec(heartbeat_t *hb); + #endif /* NETDATA_CLOCKS_H */ |