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local: add new driver call to set synchronization status

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This will be used to set the kernel adjtimex() variables to allow other
applications running on the system to know if the system clock is
synchronized and the estimated error and the maximum error.
This commit is contained in:
Miroslav Lichvar 2014-12-09 15:42:56 +01:00
parent 513e65900c
commit e14a03a172
10 changed files with 39 additions and 9 deletions
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15
local.c
View file

@ -56,6 +56,7 @@ static lcl_AccrueOffsetDriver drv_accrue_offset;
static lcl_ApplyStepOffsetDriver drv_apply_step_offset;
static lcl_OffsetCorrectionDriver drv_offset_convert;
static lcl_SetLeapDriver drv_set_leap;
static lcl_SetSyncStatusDriver drv_set_sync_status;
/* ================================================== */
@ -557,7 +558,8 @@ lcl_RegisterSystemDrivers(lcl_ReadFrequencyDriver read_freq,
lcl_AccrueOffsetDriver accrue_offset,
lcl_ApplyStepOffsetDriver apply_step_offset,
lcl_OffsetCorrectionDriver offset_convert,
lcl_SetLeapDriver set_leap)
lcl_SetLeapDriver set_leap,
lcl_SetSyncStatusDriver set_sync_status)
{
drv_read_freq = read_freq;
drv_set_freq = set_freq;
@ -565,6 +567,7 @@ lcl_RegisterSystemDrivers(lcl_ReadFrequencyDriver read_freq,
drv_apply_step_offset = apply_step_offset;
drv_offset_convert = offset_convert;
drv_set_leap = set_leap;
drv_set_sync_status = set_sync_status;
current_freq_ppm = (*drv_read_freq)();
@ -632,3 +635,13 @@ LCL_SetTempComp(double comp)
}
/* ================================================== */
void
LCL_SetSyncStatus(int synchronised, double est_error, double max_error)
{
if (drv_set_sync_status) {
(drv_set_sync_status)(synchronised, est_error, max_error);
}
}
/* ================================================== */

4
local.h
View file

@ -206,4 +206,8 @@ extern void LCL_SetLeap(int leap);
due to clamping or rounding). */
extern double LCL_SetTempComp(double comp);
/* Routine to update the synchronisation status in the kernel to allow other
applications to know if the system clock is synchronised and error bounds */
extern void LCL_SetSyncStatus(int synchronised, double est_error, double max_error);
#endif /* GOT_LOCAL_H */

6
localp.h
View file

@ -57,6 +57,9 @@ typedef void (*lcl_OffsetCorrectionDriver)(struct timeval *raw, double *corr, do
/* System driver to schedule leap second */
typedef void (*lcl_SetLeapDriver)(int leap);
/* 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
@ -65,6 +68,7 @@ lcl_RegisterSystemDrivers(lcl_ReadFrequencyDriver read_freq,
lcl_AccrueOffsetDriver accrue_offset,
lcl_ApplyStepOffsetDriver apply_step_offset,
lcl_OffsetCorrectionDriver offset_convert,
lcl_SetLeapDriver set_leap);
lcl_SetLeapDriver set_leap,
lcl_SetSyncStatusDriver set_sync_status);
#endif /* GOT_LOCALP_H */

4
reference.c
View file

@ -928,6 +928,8 @@ REF_SetReference(int stratum,
LOG(LOGS_WARN, LOGF_Reference, "System clock was stepped by %.6f seconds", -step_offset);
}
LCL_SetSyncStatus(are_we_synchronised, offset_sd, offset_sd + root_delay / 2.0 + root_dispersion);
abs_freq_ppm = LCL_ReadAbsoluteFrequency();
write_log(&now,
@ -1016,6 +1018,8 @@ REF_SetUnsynchronised(void)
update_leap_status(LEAP_Unsynchronised, 0);
are_we_synchronised = 0;
LCL_SetSyncStatus(0, 0.0, 0.0);
write_log(&now,
"0.0.0.0",
0,

5
sys_generic.c
View file

@ -275,7 +275,8 @@ SYS_Generic_CompleteFreqDriver(double max_set_freq_ppm, double max_set_freq_dela
lcl_ReadFrequencyDriver sys_read_freq,
lcl_SetFrequencyDriver sys_set_freq,
lcl_ApplyStepOffsetDriver sys_apply_step_offset,
lcl_SetLeapDriver sys_set_leap)
lcl_SetLeapDriver sys_set_leap,
lcl_SetSyncStatusDriver sys_set_sync_status)
{
max_freq = max_set_freq_ppm;
max_freq_change_delay = max_set_freq_delay * (1.0 + max_freq / 1.0e6);
@ -291,7 +292,7 @@ SYS_Generic_CompleteFreqDriver(double max_set_freq_ppm, double max_set_freq_dela
lcl_RegisterSystemDrivers(read_frequency, set_frequency,
accrue_offset, sys_apply_step_offset ?
sys_apply_step_offset : apply_step_offset,
offset_convert, sys_set_leap);
offset_convert, sys_set_leap, NULL);
LCL_AddParameterChangeHandler(handle_step, NULL);
}

3
sys_generic.h
View file

@ -35,7 +35,8 @@ extern void SYS_Generic_CompleteFreqDriver(double max_set_freq_ppm, double max_s
lcl_ReadFrequencyDriver sys_read_freq,
lcl_SetFrequencyDriver sys_set_freq,
lcl_ApplyStepOffsetDriver sys_apply_step_offset,
lcl_SetLeapDriver sys_set_leap);
lcl_SetLeapDriver sys_set_leap,
lcl_SetSyncStatusDriver sys_set_sync_status);
extern void SYS_Generic_Finalise(void);

2
sys_linux.c
View file

@ -338,7 +338,7 @@ SYS_Linux_Initialise(void)
1.0 / tick_update_hz,
read_frequency, set_frequency,
have_setoffset ? apply_step_offset : NULL,
set_leap);
set_leap, NULL);
}
/* ================================================== */

3
sys_netbsd.c
View file

@ -307,7 +307,8 @@ SYS_NetBSD_Initialise(void)
lcl_RegisterSystemDrivers(read_frequency, set_frequency,
accrue_offset, apply_step_offset,
get_offset_correction,
NULL /* set_leap */);
NULL /* set_leap */,
NULL /* set_sync_status */);
}

3
sys_solaris.c
View file

@ -426,7 +426,8 @@ SYS_Solaris_Initialise(void)
lcl_RegisterSystemDrivers(read_frequency, set_frequency,
accrue_offset, apply_step_offset,
get_offset_correction,
NULL /* set_leap */);
NULL /* set_leap */,
NULL /* set_sync_status */);
/* Turn off the kernel switch that keeps the system clock in step
with the non-volatile clock */

3
sys_sunos.c
View file

@ -379,7 +379,8 @@ SYS_SunOS_Initialise(void)
lcl_RegisterSystemDrivers(read_frequency, set_frequency,
accrue_offset, apply_step_offset,
get_offset_correction,
NULL /* set_leap */);
NULL /* set_leap */,
NULL /* set_sync_status */);
/* Turn off the kernel switch that keeps the system clock in step
with the non-volatile clock */