C++ (Cpp) kern_clock_settimeの例

コード例 #1

ファイル: hv_timesync.c プロジェクト: jaredmcneill/freebsd

static void
vmbus_timesync(struct hv_util_sc *sc, uint64_t hvtime, uint8_t tsflags)
{
	struct timespec vm_ts;
	uint64_t hv_ns, vm_ns;

	hv_ns = (hvtime - VMBUS_ICMSG_TS_BASE) * VMBUS_ICMSG_TS_FACTOR;
	nanotime(&vm_ts);
	vm_ns = (vm_ts.tv_sec * NANOSEC) + vm_ts.tv_nsec;

	if ((tsflags & VMBUS_ICMSG_TS_FLAG_SYNC) && !vmbus_ts_ignore_sync) {
		struct timespec hv_ts;

		if (bootverbose) {
			device_printf(sc->ic_dev, "apply sync request, "
			    "hv: %ju, vm: %ju\n",
			    (uintmax_t)hv_ns, (uintmax_t)vm_ns);
		}
		hv_ts.tv_sec = hv_ns / NANOSEC;
		hv_ts.tv_nsec = hv_ns % NANOSEC;
		kern_clock_settime(curthread, CLOCK_REALTIME, &hv_ts);
		/* Done! */
		return;
	}

	if ((tsflags & VMBUS_ICMSG_TS_FLAG_SAMPLE) &&
	    vmbus_ts_sample_thresh > 0) {
		int64_t diff;

		if (vmbus_ts_sample_verbose) {
			device_printf(sc->ic_dev, "sample request, "
			    "hv: %ju, vm: %ju\n",
			    (uintmax_t)hv_ns, (uintmax_t)vm_ns);
		}

		if (hv_ns > vm_ns)
			diff = hv_ns - vm_ns;
		else
			diff = vm_ns - hv_ns;
		/* nanosec -> millisec */
		diff /= 1000000;

		if (diff > vmbus_ts_sample_thresh) {
			struct timespec hv_ts;

			if (bootverbose) {
				device_printf(sc->ic_dev,
				    "apply sample request, hv: %ju, vm: %ju\n",
				    (uintmax_t)hv_ns, (uintmax_t)vm_ns);
			}
			hv_ts.tv_sec = hv_ns / NANOSEC;
			hv_ts.tv_nsec = hv_ns % NANOSEC;
			kern_clock_settime(curthread, CLOCK_REALTIME, &hv_ts);
		}
		/* Done */
		return;
	}
}

コード例 #2

ファイル: hv_util.c プロジェクト: junfangV/hyperv-is-test

/**
 * Set host time based on time sync message from host
 */
static void
hv_set_host_time(void *context)
{
 	time_sync_data* time_msg = (time_sync_data*) context;	
	uint64_t hosttime = time_msg->data;
	struct timespec guest_ts, host_ts;
	uint64_t host_tns;
	int64_t diff;
	int error;

	host_tns = (hosttime - HV_WLTIMEDELTA) * 100;
	host_ts.tv_sec = (time_t)(host_tns/HV_NANO_SEC_PER_SEC);
	host_ts.tv_nsec = (long)(host_tns%HV_NANO_SEC_PER_SEC);

	nanotime(&guest_ts);
	
	diff = (int64_t)host_ts.tv_sec - (int64_t)guest_ts.tv_sec;

	/*
	 * If host differs by 5 seconds then make the guest catch up
	 */
	if (diff > 5 || diff < -5) {
		error = kern_clock_settime(curthread, CLOCK_REALTIME,
		    &host_ts);
	} 

	/*
	 * Free the hosttime that was allocated in hv_adj_guesttime()
	 */
	free(time_msg, M_DEVBUF);
}

コード例 #3

/**
 * Set host time based on time sync message from host
 */
static void
hv_set_host_time(void *context, int pending)
{
	hv_timesync_sc *softc = (hv_timesync_sc*)context;
	uint64_t hosttime = softc->time_msg.data;
	struct timespec guest_ts, host_ts;
	uint64_t host_tns;
	int64_t diff;
	int error;

	host_tns = (hosttime - HV_WLTIMEDELTA) * 100;
	host_ts.tv_sec = (time_t)(host_tns/HV_NANO_SEC_PER_SEC);
	host_ts.tv_nsec = (long)(host_tns%HV_NANO_SEC_PER_SEC);

	nanotime(&guest_ts);

	diff = (int64_t)host_ts.tv_sec - (int64_t)guest_ts.tv_sec;

	/*
	 * If host differs by 5 seconds then make the guest catch up
	 */
	if (diff > 5 || diff < -5) {
		error = kern_clock_settime(curthread, CLOCK_REALTIME,
		    &host_ts);
	}
}

コード例 #4

ファイル: kern_time.c プロジェクト: AhmadTux/DragonFlyBSD

/*
 * MPALMOSTSAFE
 */
int
sys_clock_settime(struct clock_settime_args *uap)
{
	struct timespec ats;
	int error;

	if ((error = copyin(uap->tp, &ats, sizeof(ats))) != 0)
		return (error);

	get_mplock();
	error = kern_clock_settime(uap->clock_id, &ats);
	rel_mplock();
	return (error);
}

コード例 #5

int
sys_linux_clock_settime(struct linux_clock_settime_args *args)
{
	struct timespec ts;
	struct l_timespec lts;
	int error;
	clockid_t nwhich = 0;	/* XXX: GCC */

	error = linux_to_native_clockid(&nwhich, args->which);
	if (error != 0)
		return (error);
	error = copyin(args->tp, &lts, sizeof lts);
	if (error != 0)
		return (error);
	error = linux_to_native_timespec(&ts, &lts);
	if (error != 0)
		return (error);

	return (kern_clock_settime(nwhich, &ts));
}