kern_ntptime.c File Reference

This source file contains the implementation of ntp_gettime(), ntp_adjtime(), adjtime(), and _Timecounter_NTP_update_second(). More...

#include <sys/cdefs.h>
#include "opt_ntp.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/time.h>
#include <sys/timex.h>
#include <sys/timetc.h>
#include <sys/timepps.h>
#include <sys/syscallsubr.h>
#include <sys/sysctl.h>

Data Structures
struct	ntp_gettime_args
struct	ntp_adjtime_args
struct	adjtime_args

Macros
#define	L_ADD(v, u)
#define	L_SUB(v, u)
#define	L_ADDHI(v, a)
#define	L_NEG(v)
#define	L_RSHIFT(v, n)
#define	L_MPY(v, a)
#define	L_CLR(v)
#define	L_ISNEG(v)
#define	L_LINT(v, a)
#define	L_GINT(v)
#define	SHIFT_PLL   4
#define	SHIFT_FLL   2
#define	NTP_LOCK()
#define	NTP_UNLOCK()
#define	NTP_ASSERT_LOCKED()

Typedefs
typedef int64_t	l_fp

Functions
	MTX_SYSINIT (ntp, &ntp_lock, "ntp", MTX_SPIN)
int	sys_ntp_gettime (struct thread *td, struct ntp_gettime_args *uap)
	SYSCTL_NODE (_kern, OID_AUTO, ntp_pll, CTLFLAG_RW|CTLFLAG_MPSAFE, 0, "")
	SYSCTL_PROC (_kern_ntp_pll, OID_AUTO, gettime, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE, 0, sizeof(struct ntptimeval), ntp_sysctl, "S,ntptimeval", "")
int	kern_ntp_adjtime (struct thread *td, struct timex *ntv, int *retvalp)
int	sys_ntp_adjtime (struct thread *td, struct ntp_adjtime_args *uap)
void	ntp_update_second (int64_t *adjustment, time_t *newsec)
int	sys_adjtime (struct thread *td, struct adjtime_args *uap)
int	kern_adjtime (struct thread *td, struct timeval *delta, struct timeval *olddelta)
	SYSCTL_PROC (_machdep, OID_AUTO, rtc_save_period, CTLTYPE_INT|CTLFLAG_RWTUN|CTLFLAG_MPSAFE, &resettodr_period, 1800, sysctl_resettodr_period, "I", "Save system time to RTC with this period (in seconds)")
	SYSINIT (periodic_resettodr, SI_SUB_LAST, SI_ORDER_MIDDLE, start_periodic_resettodr, NULL)

Variables
int	time_status = STA_UNSYNC
long	time_esterror = MAXPHASE / 1000

Detailed Description

This source file contains the implementation of ntp_gettime(), ntp_adjtime(), adjtime(), and _Timecounter_NTP_update_second().

Macro Definition Documentation

L_ADD

#define L_ADD	(		v,
			u )

Value:

((v) += (u))

L_ADDHI

#define L_ADDHI	(		v,
			a )

Value:

((v) += (int64_t)(a) << 32)

L_CLR

#define L_CLR

(

v

)

Value:

((v) = 0)

L_GINT

#define L_GINT

(

v

)

Value:

((v) < 0 ? -(-(v) >> 32) : (v) >> 32)

L_ISNEG

#define L_ISNEG

(

v

)

Value:

((v) < 0)

L_LINT

#define L_LINT	(		v,
			a )

Value:

do { \
    if ((a) < 0) \
        ((v) = -((int64_t)(-(a)) << 32)); \
    else \
        ((v) = (int64_t)(a) << 32); \
} while (0)

L_MPY

#define L_MPY	(		v,
			a )

Value:

((v) *= (a))

L_NEG

#define L_NEG

(

v

)

Value:

((v) = -(v))

L_RSHIFT

#define L_RSHIFT	(		v,
			n )

Value:

do { \
    if ((v) < 0) \
        (v) = -(-(v) >> (n)); \
    else \
        (v) = (v) >> (n); \
} while (0)

L_SUB

#define L_SUB	(		v,
			u )

Value:

((v) -= (u))

NTP_ASSERT_LOCKED

#define NTP_ASSERT_LOCKED

(

)

Value:

mtx_assert(&ntp_lock, MA_OWNED)

NTP_LOCK

#define NTP_LOCK

(

)

Value:

mtx_lock_spin(&ntp_lock)

NTP_UNLOCK

#define NTP_UNLOCK

(

)

Value:

mtx_unlock_spin(&ntp_lock)