NAME

	time, nsec, uptime, fastticks – time in seconds and nanoseconds

SYNOPSIS

	#include <u.h> #include <libc.h> long time(long *tp) vlong nsec(void) vlong uptime(void) uvlong fastticks(uvlong *hz)

DESCRIPTION

Both time and nsec return the time since the epoch 00:00:00 GMT, Jan. 1, 1970. The return value of the former is in seconds and the latter in nanoseconds. For time, if tp is not zero then *tp is also set to the answer. Uptime returns monotonically increasing nanoseconds since boot. Fastticks returns clock cycles from the highest precision clock in the system. If hz is not nil then *hz is set to the cycle frequency of the high precision clock. These functions work by reading /dev/bintime.

SOURCE

	/sys/src/libc/9sys/time.c /sys/src/libc/9sys/nsec.c

SEE ALSO

	cputime(2), cons(3)

DIAGNOSTICS

	Sets errstr.