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CLOCK_GETCPUCLOCKI... DragonFly Library Functions Manual CLOCK_GETCPUCLOCKI...

NAME
     clock_getcpuclockid -- access a process CPU-time clock

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <time.h>

     int
     clock_getcpuclockid(pid_t pid, clockid_t *clock_id);

DESCRIPTION
     The clock_getcpuclockid() function returns the clock ID of the CPU-time
     clock of the process specified by pid.  If the process described by pid
     exists and the calling process has permission, the clock ID of this clock
     will be returned in clock_id.

     If pid is zero, clock_getcpuclockid() returns the clock ID of the CPU-
     time clock of the process making the call.

RETURN VALUES
     Upon successful completion, clock_getcpuclockid() returns zero;
     otherwise, an error number is returned to indicate the error.

ERRORS
     The clock_getcpuclockid() function will fail if:

     [EPERM]            The requesting process does not have permission to
                        access the CPU-time clock for the process.

     [ESRCH]            No process can be found corresponding to the process
                        specified by pid.

SEE ALSO
     clock_gettime(2)

STANDARDS
     The clock_getcpuclockid() function conforms to IEEE Std 1003.1-2001
     (``POSIX.1'').

HISTORY
     The clock_getcpuclockid() function first appeared in FreeBSD 10.0 and was
     ported to DragonFly 4.9.

AUTHORS
     David Xu <davidxu@FreeBSD.org>

DragonFly 4.9                    July 26, 2017                   DragonFly 4.9