GNU/Linux |
CentOS 5.6 |
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clock_settime(2) |
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clock_settime − Set the specified clock
long sys_clock_settime (clockid_t which_clock, const struct timespec *tp); |
clock_settime
sets the specified clock, which_clock, to the value
specified by tp. The values that clockid_t
currently supports for POSIX.1b timers, defined in
include/linux/time.h, are:
CLOCK_REALTIME
Systemwide realtime clock.
CLOCK_MONOTONIC
Represents monotonic time. Cannot be set.
CLOCK_PROCESS_CPUTIME_ID
High resolution per-process timer.
CLOCK_THREAD_CPUTIME_ID
Thread-specific timer.
CLOCK_REALTIME_HR
High resolution version of CLOCK_REALTIME.
CLOCK_MONOTONIC_HR
High resolution version of CLOCK_MONOTONIC.
clock_gettime returns 0 on success; otherwise, it returns one of the errors listed in the "Errors" section.
-EINVAL
An invalid which_clock value was specified.
-EFAULT
Can not copy tp value to kernel space.
clock_getres(2), clock_nanosleep(2), clock_gettime(2)
Niki Rahimi
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clock_settime(2) | ![]() |