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/*
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. The suggested correction rate of time to correct the
offset is given in 'corr_rate'. */
typedef void (*lcl_AccrueOffsetDriver)(double offset, double corr_rate);
/* System driver to apply a step offset. A positive argument means step
the clock forwards. */
typedef int (*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 timespec *raw, double *corr, double *err);
/* System driver to schedule leap seconds and set TAI-UTC offset */
typedef void (*lcl_SetLeapDriver)(int leap, int tai_offset);
/* System driver to set the synchronisation status */
typedef void (*lcl_SetSyncStatusDriver)(int synchronised, double est_error, double max_error);
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,
lcl_SetSyncStatusDriver set_sync_status);
#endif /* GOT_LOCALP_H */
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