$OpenBSD: clock_getcpuclockid.3,v 1.3 2015/01/15 19:26:27 schwarze Exp $
Copyright (c) 2013 Philip Guenther <guenther@openbsd.org>
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.Dd $Mdocdate: November 30 2014 $ .Dt CLOCK_GETCPUCLOCKID 3 .Os .Sh NAME .Nm clock_getcpuclockid .Nd get a clock measuring process CPU time .Sh SYNOPSIS n time.h .Ft int .Fn clock_getcpuclockid "pid_t pid" "clockid_t *clock_id" .Sh DESCRIPTION The .Fn clock_getcpuclockid function allows the calling process to get a .Vt clockid_t value that measures the time spent by CPUs running in user or kernel mode on behalf of the process specified by .Fa pid . If .Fa pid is zero, then a clock for the calling process will be returned. .Sh RETURN VALUES If successful, .Fn clock_getcpuclockid will return zero. Otherwise an error number will be returned to indicate the error. .Sh ERRORS .Fn clock_getcpuclockid will fail if: l -tag -width Er t Bq Er EPERM .Fa pid is neither zero nor the PID of the calling process. .El .Sh SEE ALSO .Xr clock_gettime 2 , .Xr pthread_getcpuclockid 3 .Sh STANDARDS The .Fn clock_getcpuclockid function conforms to .St -p1003.1-2008 . .Sh HISTORY The .Fn clock_getcpuclockid function first appeared in IEEE Std 1003.1d-1999
Copyright (c) 2013 Philip Guenther <guenther@openbsd.org>
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.Dd $Mdocdate: November 30 2014 $ .Dt CLOCK_GETCPUCLOCKID 3 .Os .Sh NAME .Nm clock_getcpuclockid .Nd get a clock measuring process CPU time .Sh SYNOPSIS n time.h .Ft int .Fn clock_getcpuclockid "pid_t pid" "clockid_t *clock_id" .Sh DESCRIPTION The .Fn clock_getcpuclockid function allows the calling process to get a .Vt clockid_t value that measures the time spent by CPUs running in user or kernel mode on behalf of the process specified by .Fa pid . If .Fa pid is zero, then a clock for the calling process will be returned. .Sh RETURN VALUES If successful, .Fn clock_getcpuclockid will return zero. Otherwise an error number will be returned to indicate the error. .Sh ERRORS .Fn clock_getcpuclockid will fail if: l -tag -width Er t Bq Er EPERM .Fa pid is neither zero nor the PID of the calling process. .El .Sh SEE ALSO .Xr clock_gettime 2 , .Xr pthread_getcpuclockid 3 .Sh STANDARDS The .Fn clock_getcpuclockid function conforms to .St -p1003.1-2008 . .Sh HISTORY The .Fn clock_getcpuclockid function first appeared in IEEE Std 1003.1d-1999
q Dq POSIX.1d and has been available since .Ox 5.4 .