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2CLOCK_GETTIME(2)           Linux Programmer's Manual          CLOCK_GETTIME(2)
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NAME

7       clock_gettime  - Return the current timespec value of tp for the speci‐
8       fied clock
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SYNOPSIS

11       long sys_clock_gettime (clockid_t which_clock, struct timespec *tp);
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DESCRIPTION

15       clock_gettime returns the current timespec value of tp for the specific
16       clock,  which_clock.   The values that clockid_t currently supports for
17       POSIX.1b timers, as defined in include/linux/time.h, are:
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20       CLOCK_REALTIME
21              Systemwide realtime clock.
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24       CLOCK_MONOTONIC
25              Represents monotonic time. Cannot be set.
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28       CLOCK_PROCESS_CPUTIME_ID
29              High resolution per-process timer.
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32       CLOCK_THREAD_CPUTIME_ID
33              Thread-specific timer.
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36       CLOCK_REALTIME_HR
37              High resolution version of CLOCK_REALTIME.
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40       CLOCK_MONOTONIC_HR
41              High resolution version of CLOCK_MONOTONIC.
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RETURN VALUE

46       clock_gettime returns 0 on success; otherwise, it returns  one  of  the
47       errors listed in the "Errors" section.
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ERRORS

51       -EINVAL
52              An invalid which_clock value was specified.
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55       -EFAULT
56              Can not coy to tp value.
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SEE ALSO

60       clock_getres(2), clock_nanosleep(2), clock_settime(2)
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AUTHOR

64       Niki Rahimi
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68Linux 2.6                        2004-March-12                CLOCK_GETTIME(2)
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