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reference: make driftfile update interval configurable

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Add interval option to the driftfile directive to specify the minimum
interval between updates of the recorded frequency offset and skew.
This commit is contained in:
Miroslav Lichvar
2024-11-12 16:01:03 +01:00
parent 837323d687
commit d9d97f76d7
5 changed files with 39 additions and 10 deletions
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8
reference.c
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@@ -47,9 +47,6 @@
/* The update interval of the reference in the local reference mode */
#define LOCAL_REF_UPDATE_INTERVAL 64.0
/* Interval between updates of the drift file */
#define MAX_DRIFTFILE_AGE 3600.0
static int are_we_synchronised;
static int enable_local_stratum;
static int local_stratum;
@@ -110,6 +107,7 @@ static REF_ModeEndHandler mode_end_handler = NULL;
/* Filename of the drift file. */
static char *drift_file=NULL;
static double drift_file_age;
static int drift_file_interval;
static void update_drift_file(double, double);
@@ -213,7 +211,7 @@ REF_Initialise(void)
local_activate_ok = 0;
/* Now see if we can get the drift file opened */
drift_file = CNF_GetDriftFile();
drift_file = CNF_GetDriftFile(&drift_file_interval);
if (drift_file) {
in = UTI_OpenFile(NULL, drift_file, NULL, 'r', 0);
if (in) {
@@ -1005,7 +1003,7 @@ REF_SetReference(int stratum, NTP_Leap leap, int combined_sources,
if (drift_file) {
/* Update drift file at most once per hour */
drift_file_age += update_interval;
if (drift_file_age >= MAX_DRIFTFILE_AGE) {
if (drift_file_age >= drift_file_interval) {
update_drift_file(local_abs_frequency, our_skew);
drift_file_age = 0.0;
}