8884034104
This is a verbatim copy of the files at that stage of the repository that was built from the CVS import. It allows future development to see a bit of recent history, but without carrying around the baggage going back to 1997. If that is really required, git grafts can be used.
147 lines
4 KiB
C
147 lines
4 KiB
C
/*
|
|
$Header: /cvs/src/chrony/reference.h,v 1.13 2002/02/28 23:27:12 richard Exp $
|
|
|
|
=======================================================================
|
|
|
|
chronyd/chronyc - Programs for keeping computer clocks accurate.
|
|
|
|
**********************************************************************
|
|
* Copyright (C) Richard P. Curnow 1997-2002
|
|
*
|
|
* 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.,
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*
|
|
**********************************************************************
|
|
|
|
=======================================================================
|
|
|
|
This is the header file for the module that keeps track of the current
|
|
reference.
|
|
|
|
*/
|
|
|
|
#ifndef GOT_REFERENCE_H
|
|
#define GOT_REFERENCE_H
|
|
|
|
#include "sysincl.h"
|
|
|
|
#include "ntp.h"
|
|
#include "reports.h"
|
|
|
|
/* Init function */
|
|
extern void REF_Initialise(void);
|
|
|
|
/* Fini function */
|
|
extern void REF_Finalise(void);
|
|
|
|
/* Function which takes a local cooked time and returns the estimated
|
|
time of the reference. It also returns the other parameters
|
|
required for forming the outgoing NTP packet.
|
|
|
|
local_time is the cooked local time returned by the LCL module
|
|
|
|
is_synchronised indicates whether we are synchronised to anything
|
|
at the moment.
|
|
|
|
leap indicates the current leap status
|
|
|
|
stratum is the stratum of this machine, when considered to be sync'd to the
|
|
reference
|
|
|
|
ref_id is the reference_id of the source
|
|
|
|
ref_time is the time at which the we last set the reference source up
|
|
|
|
root_delay is the root delay of the sample we are using
|
|
|
|
root_dispersion is the root dispersion of the sample we are using, with all the
|
|
skew etc added on.
|
|
|
|
*/
|
|
|
|
extern void REF_GetReferenceParams
|
|
(
|
|
struct timeval *local_time,
|
|
int *is_synchronised,
|
|
NTP_Leap *leap,
|
|
int *stratum,
|
|
unsigned long *ref_id,
|
|
struct timeval *ref_time,
|
|
double *root_delay,
|
|
double *root_dispersion
|
|
);
|
|
|
|
/* Function called by the clock selection process to register a new
|
|
reference source and its parameters
|
|
|
|
stratum is the stratum of the reference
|
|
|
|
leap is the leap status read from the source
|
|
|
|
ref_id is the reference id of the reference
|
|
|
|
ref_time is the time at which the parameters are assumed to be
|
|
correct, in terms of local time
|
|
|
|
frequency is the amount of local clock gain relative to the
|
|
reference per unit time interval of the local clock
|
|
|
|
skew is the maximum estimated frequency error (so we are within
|
|
[frequency+-skew])
|
|
|
|
root_delay is the root delay of the sample we are using
|
|
|
|
root_dispersion is the root dispersion of the sample we are using
|
|
|
|
*/
|
|
|
|
extern void REF_SetReference
|
|
(
|
|
int stratum,
|
|
NTP_Leap leap,
|
|
unsigned long ref_id,
|
|
struct timeval *ref_time,
|
|
double offset,
|
|
double frequency,
|
|
double skew,
|
|
double root_delay,
|
|
double root_dispersion
|
|
);
|
|
|
|
extern void REF_SetManualReference
|
|
(
|
|
struct timeval *ref_time,
|
|
double offset,
|
|
double frequency,
|
|
double skew
|
|
);
|
|
|
|
/* Mark the local clock as unsynchronised */
|
|
extern void
|
|
REF_SetUnsynchronised(void);
|
|
|
|
/* Return the current stratum of this host or zero if the host is not
|
|
synchronised */
|
|
extern int REF_GetOurStratum(void);
|
|
|
|
/* Modify the setting for the maximum skew we are prepared to allow updates on (in ppm). */
|
|
extern void REF_ModifyMaxupdateskew(double new_max_update_skew);
|
|
|
|
extern void REF_EnableLocal(int stratum);
|
|
extern void REF_DisableLocal(void);
|
|
|
|
extern void REF_GetTrackingReport(RPT_TrackingReport *rep);
|
|
|
|
extern void REF_CycleLogFile(void);
|
|
|
|
#endif /* GOT_REFERENCE_H */
|