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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-09 12:48:01 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-09 12:48:01 +0000 |
commit | b2d2d555a704148968cb7e566735a2a1b1a2f189 (patch) | |
tree | 18549ff498338f40ecf7aa327620abf4c1c3ee43 /hwclock.h | |
parent | Initial commit. (diff) | |
download | chrony-b2d2d555a704148968cb7e566735a2a1b1a2f189.tar.xz chrony-b2d2d555a704148968cb7e566735a2a1b1a2f189.zip |
Adding upstream version 4.5.upstream/4.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | hwclock.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/hwclock.h b/hwclock.h new file mode 100644 index 0000000..c3415ad --- /dev/null +++ b/hwclock.h @@ -0,0 +1,54 @@ +/* + chronyd/chronyc - Programs for keeping computer clocks accurate. + + ********************************************************************** + * Copyright (C) Miroslav Lichvar 2016 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + ********************************************************************** + + ======================================================================= + + Header for tracking of hardware clocks */ + +#ifndef GOT_HWCLOCK_H +#define GOT_HWCLOCK_H + +typedef struct HCL_Instance_Record *HCL_Instance; + +/* Create a new HW clock instance */ +extern HCL_Instance HCL_CreateInstance(int min_samples, int max_samples, + double min_separation, double precision); + +/* Destroy a HW clock instance */ +extern void HCL_DestroyInstance(HCL_Instance clock); + +/* Check if a new sample should be accumulated at this time */ +extern int HCL_NeedsNewSample(HCL_Instance clock, struct timespec *now); + +/* Process new readings of the HW clock in form of (sys, hw, sys) triplets and + produce a sample which can be accumulated */ +extern int HCL_ProcessReadings(HCL_Instance clock, int n_readings, struct timespec tss[][3], + struct timespec *hw_ts, struct timespec *local_ts, double *err); + +/* Accumulate a new sample */ +extern void HCL_AccumulateSample(HCL_Instance clock, struct timespec *hw_ts, + struct timespec *local_ts, double err); + +/* Convert raw hardware time to cooked local time */ +extern int HCL_CookTime(HCL_Instance clock, struct timespec *raw, struct timespec *cooked, + double *err); + +#endif |