| /* |
| 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 */ |