getclock.3c (2010 09)

getclock(3C) getclock(3C)

NAME

getclock - get current value of system-wide clock

SYNOPSIS

#include <sys/timers.h>

int getclock(int clock_type, struct timespec *tp);

DESCRIPTION

The getclock() function gets the current value tp

of the speciﬁed system-wide clock, clock_type.

getclock() supports a clock_type of TIMEOFDAY, deﬁned in <

sys/timers.h>, which

represents the time-of-day clock for the system. For this clock, the values returned by

getclock()

represent the amount of time since the Epoch.

RETURN VALUE

Upon successful completion,

getclock() returns a value of zero; otherwise it returns a value of −1 and

sets

errno to indicate the error.

ERRORS

getclock() fails if any of the following conditions are encountered:

[EINVAL]

clock_type does not specify a known system-wide clock.

[EIO] An error occurred while accessing the clock device.

FILES

/usr/include/sys/timers.h

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getclock(3C) getclock(3C) NAME getclock - get current value of system-wide clock SYNOPSIS #include int getclock(int clock_type, struct timespec *tp); DESCRIPTION The getclock() function gets the current value tp of the specified system-wide clock, clock_type. getclock() supports a clock_type of TIMEOFDAY, defined in , which represents the time-of-day clock for the system. For this clock, the values returned by getclock() represent the amount of time since the Epoch.
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(Notes) A (Notes) gA 2 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010