Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
CLOCK_GETCPUCLOCKID(3) FreeBSD Library Functions Manual	CLOCK_GETCPUCLOCKID(3)

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() 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, the clock_getcpuclockid() function	returns	the clock ID
     of	the CPU-time clock of the process making the call, in clock_id.

RETURN VALUES
     Upon successful completion, clock_getcpuclockid() returns zero; other-
     wise, 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.

AUTHORS
     David Xu <davidxu@FreeBSD.org>

FreeBSD	Ports 11.2		August 21, 2012		    FreeBSD Ports 11.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=clock_getcpuclockid&sektion=3&manpath=FreeBSD+12.0-RELEASE+and+Ports>

home | help