diff options
Diffstat (limited to 'libnetdata/clocks/clocks.h')
| -rw-r--r-- | libnetdata/clocks/clocks.h | 41 |
1 files changed, 16 insertions, 25 deletions
diff --git a/libnetdata/clocks/clocks.h b/libnetdata/clocks/clocks.h index d3475df6..53c036ec 100644 --- a/libnetdata/clocks/clocks.h +++ b/libnetdata/clocks/clocks.h @@ -22,8 +22,9 @@ typedef unsigned long long usec_t; typedef long long susec_t; typedef struct heartbeat { - usec_t monotonic; usec_t realtime; + usec_t randomness; + size_t statistics_id; } heartbeat_t; /* Linux value is as good as any other */ @@ -36,20 +37,14 @@ typedef struct heartbeat { #define CLOCK_MONOTONIC CLOCK_REALTIME #endif -/* Prefer CLOCK_MONOTONIC_COARSE where available to reduce overhead. It has the same semantics as CLOCK_MONOTONIC */ -#ifndef CLOCK_MONOTONIC_COARSE -/* fallback to CLOCK_MONOTONIC if not available */ -#define CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC -#endif - #ifndef CLOCK_BOOTTIME #ifdef CLOCK_UPTIME /* CLOCK_BOOTTIME falls back to CLOCK_UPTIME on FreeBSD */ #define CLOCK_BOOTTIME CLOCK_UPTIME #else // CLOCK_UPTIME -/* CLOCK_BOOTTIME falls back to CLOCK_MONOTONIC */ -#define CLOCK_BOOTTIME CLOCK_MONOTONIC_COARSE +/* CLOCK_BOOTTIME falls back to CLOCK_REALTIME */ +#define CLOCK_BOOTTIME CLOCK_REALTIME #endif // CLOCK_UPTIME #else // CLOCK_BOOTTIME @@ -115,8 +110,6 @@ extern int clock_gettime(clockid_t clk_id, struct timespec *ts); * All now_*_sec() functions return the time in seconds from the appropriate clock, or 0 on error. * All now_*_usec() functions return the time in microseconds from the appropriate clock, or 0 on error. * - * Most functions will attempt to use CLOCK_MONOTONIC_COARSE if available to reduce contention overhead and improve - * performance scaling. If high precision is required please use one of the available now_*_high_precision_* functions. */ extern int now_realtime_timeval(struct timeval *tv); extern time_t now_realtime_sec(void); @@ -133,7 +126,6 @@ extern int now_boottime_timeval(struct timeval *tv); extern time_t now_boottime_sec(void); extern usec_t now_boottime_usec(void); - extern usec_t timeval_usec(struct timeval *tv); extern msec_t timeval_msec(struct timeval *tv); @@ -147,23 +139,22 @@ extern void heartbeat_init(heartbeat_t *hb); */ extern usec_t heartbeat_next(heartbeat_t *hb, usec_t tick); -/* Returns elapsed time in microseconds since last heartbeat */ -extern usec_t heartbeat_monotonic_dt_to_now_usec(heartbeat_t *hb); +extern void heartbeat_statistics(usec_t *min_ptr, usec_t *max_ptr, usec_t *average_ptr, size_t *count_ptr); -extern int sleep_usec(usec_t usec); +extern void sleep_usec(usec_t usec); -/* - * When running a binary with CLOCK_BOOTTIME defined on a system with a linux kernel older than Linux 2.6.39 the - * clock_gettime(2) system call fails with EINVAL. In that case it must fall-back to CLOCK_MONOTONIC. - */ -void test_clock_boottime(void); +extern void clocks_init(void); -/* - * When running a binary with CLOCK_MONOTONIC_COARSE defined on a system with a linux kernel older than Linux 2.6.32 the - * clock_gettime(2) system call fails with EINVAL. In that case it must fall-back to CLOCK_MONOTONIC. - */ -void test_clock_monotonic_coarse(void); +// lower level functions - avoid using directly +extern time_t now_sec(clockid_t clk_id); +extern usec_t now_usec(clockid_t clk_id); +extern int now_timeval(clockid_t clk_id, struct timeval *tv); extern collected_number uptime_msec(char *filename); +extern usec_t clock_monotonic_resolution; +extern usec_t clock_realtime_resolution; + +extern void sleep_to_absolute_time(usec_t usec); + #endif /* NETDATA_CLOCKS_H */ |