1a7415a6ab
This is needed to keep sourcestats accurate when the actual frequency is different from the requested frequency due to clamping (or possibly rounding in future system drivers).
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/*
|
|
$Header: /cvs/src/chrony/localp.h,v 1.9 2002/02/28 23:27:10 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
**********************************************************************
|
|
|
|
=======================================================================
|
|
|
|
Private include file for local.c and all system dependent
|
|
driver modules.
|
|
*/
|
|
|
|
|
|
#ifndef GOT_LOCALP_H
|
|
#define GOT_LOCALP_H
|
|
|
|
/* System driver to read the current local frequency, in ppm relative
|
|
to nominal. A positive value indicates that the local clock runs
|
|
fast when uncompensated. */
|
|
typedef double (*lcl_ReadFrequencyDriver)(void);
|
|
|
|
/* System driver to set the current local frequency, in ppm relative
|
|
to nominal. A positive value indicates that the local clock runs
|
|
fast when uncompensated. Return actual frequency (may be different
|
|
from the requested frequency due to clamping or rounding). */
|
|
typedef double (*lcl_SetFrequencyDriver)(double freq_ppm);
|
|
|
|
/* System driver to accrue an offset. A positive argument means slew
|
|
the clock forwards. */
|
|
typedef void (*lcl_AccrueOffsetDriver)(double offset);
|
|
|
|
/* System driver to apply a step offset. A positive argument means step
|
|
the clock forwards. */
|
|
typedef void (*lcl_ApplyStepOffsetDriver)(double offset);
|
|
|
|
/* System driver to convert a raw time to an adjusted (cooked) time.
|
|
The number of seconds returned in 'corr' have to be added to the
|
|
raw time to get the corrected time */
|
|
typedef void (*lcl_OffsetCorrectionDriver)(struct timeval *raw, double *corr, double *err);
|
|
|
|
/* System driver to schedule leap second */
|
|
typedef void (*lcl_SetLeapDriver)(int leap);
|
|
|
|
extern void lcl_InvokeDispersionNotifyHandlers(double dispersion);
|
|
|
|
extern void
|
|
lcl_RegisterSystemDrivers(lcl_ReadFrequencyDriver read_freq,
|
|
lcl_SetFrequencyDriver set_freq,
|
|
lcl_AccrueOffsetDriver accrue_offset,
|
|
lcl_ApplyStepOffsetDriver apply_step_offset,
|
|
lcl_OffsetCorrectionDriver offset_convert,
|
|
lcl_SetLeapDriver set_leap);
|
|
|
|
#endif /* GOT_LOCALP_H */
|