getclock(3)getclock(3)NAMEgetclock - Get current value of system-wide clock
struct timespec *tp );
Standard C Library (libc)
Identifies a system-wide clock. Points to a timespec structure space
where the current value of the system-wide clock is stored.
The getclock() function sets the current value of the clock specified
by clktyp into the location pointed to by the tp parameter.
The clktyp parameter is given as a symbolic constant name, as defined
in the sys/timers.h include file. Only the TIMEOFDAY symbolic constant,
which specifies the normal time-of-day clock to access for system-wide
time, is supported.
For the clock specified by TIMEOFDAY, the value returned by this func‐
tion is the elapsed time since the epoch. The epoch is referenced to
00:00:00 UTC (Coordinated Universal Time) 1 Jan 1970.
The getclock() function returns a timespec structure, which is defined
in the sys/timers.h header file. It has the following members: