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GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux

CentOS 4.8

 i386

clock_gettime(2)
CLOCK_GETTIME

CLOCK_GETTIME

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
SEE ALSO
AUTHOR

NAME

clock_gettime − Return the current timespec value of tp for the specified clock

SYNOPSIS

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

DESCRIPTION

clock_gettime returns the current timespec value of tp for the specific clock, which_clock. 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

Can not coy to tp value.

SEE ALSO

clock_getres(2), clock_nanosleep(2), clock_settime(2)

AUTHOR

Niki Rahimi

clock_gettime(2)