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clock_getres
Langue: en
Version: 2004-03-12 (fedora - 16/08/07)
Section: 2 (Appels système)
NAME
clock_getres - Get the resolution of any clockSYNOPSIS
- long sys_clock_getres (clockid_t which_clock, struct timespec *tp);
DESCRIPTION
clock_gettime gets the resolution of any clock specified by the which_clock parameter, and places this information in the struct timespec pointed to by tp. The values that clockid_t currently supports for POSIX.1b timers, as 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.
RETURN VALUE
clock_gettime returns 0 on success; otherwise, it returns one of the errors listed in the "Errors" section.
ERRORS
- -EINVAL
- An invalid which_clock value was specified.
- -EFAULT
- An invalid tp value was specified.
SEE ALSO
clock_gettext(2), clock_nanosleep(2), clock_settime(2)
AUTHOR
Niki RahimiContenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre