summaryrefslogtreecommitdiffstats
path: root/libnetdata/clocks/clocks.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--libnetdata/clocks/clocks.h41
1 files changed, 16 insertions, 25 deletions
diff --git a/libnetdata/clocks/clocks.h b/libnetdata/clocks/clocks.h
index d3475df6a..53c036ece 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 */