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Diffstat (limited to 'man3/clock_getcpuclockid.3')
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diff --git a/man3/clock_getcpuclockid.3 b/man3/clock_getcpuclockid.3 deleted file mode 100644 index 541c46a..0000000 --- a/man3/clock_getcpuclockid.3 +++ /dev/null @@ -1,155 +0,0 @@ -'\" t -.\" Copyright (c) 2008, Linux Foundation, written by Michael Kerrisk -.\" <mtk.manpages@gmail.com> -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.TH clock_getcpuclockid 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -clock_getcpuclockid \- obtain ID of a process CPU-time clock -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ), -since glibc 2.17 -.P -Before glibc 2.17, -Real-time library -.RI ( librt ", " \-lrt ) -.SH SYNOPSIS -.B #include <time.h> -.nf -.P -.BI "int clock_getcpuclockid(pid_t " pid ", clockid_t *" clockid ); -.fi -.P -.ad l -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.BR clock_getcpuclockid (): -.nf - _POSIX_C_SOURCE >= 200112L -.fi -.SH DESCRIPTION -The -.BR clock_getcpuclockid () -function obtains the ID of the CPU-time clock of the process whose ID is -.IR pid , -and returns it in the location pointed to by -.IR clockid . -If -.I pid -is zero, then the clock ID of the CPU-time clock -of the calling process is returned. -.SH RETURN VALUE -On success, -.BR clock_getcpuclockid () -returns 0; -on error, it returns one of the positive error numbers listed in ERRORS. -.SH ERRORS -.TP -.B ENOSYS -The kernel does not support obtaining the per-process -CPU-time clock of another process, and -.I pid -does not specify the calling process. -.TP -.B EPERM -The caller does not have permission to access -the CPU-time clock of the process specified by -.IR pid . -(Specified in POSIX.1-2001; -does not occur on Linux unless the kernel does not support -obtaining the per-process CPU-time clock of another process.) -.TP -.B ESRCH -There is no process with the ID -.IR pid . -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR clock_getcpuclockid () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -POSIX.1-2008. -.SH HISTORY -glibc 2.2. -POSIX.1-2001. -.SH NOTES -Calling -.BR clock_gettime (2) -with the clock ID obtained by a call to -.BR clock_getcpuclockid () -with a -.I pid -of 0, -is the same as using the clock ID -.BR CLOCK_PROCESS_CPUTIME_ID . -.SH EXAMPLES -The example program below obtains the -CPU-time clock ID of the process whose ID is given on the command line, -and then uses -.BR clock_gettime (2) -to obtain the time on that clock. -An example run is the following: -.P -.in +4n -.EX -.RB "$" " ./a.out 1" " # Show CPU clock of init process" -CPU\-time clock for PID 1 is 2.213466748 seconds -.EE -.in -.SS Program source -\& -.\" SRC BEGIN (clock_getcpuclockid.c) -.EX -#define _XOPEN_SOURCE 600 -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <time.h> -#include <unistd.h> -\& -int -main(int argc, char *argv[]) -{ - clockid_t clockid; - struct timespec ts; -\& - if (argc != 2) { - fprintf(stderr, "%s <process\-ID>\en", argv[0]); - exit(EXIT_FAILURE); - } -\& - if (clock_getcpuclockid(atoi(argv[1]), &clockid) != 0) { - perror("clock_getcpuclockid"); - exit(EXIT_FAILURE); - } -\& - if (clock_gettime(clockid, &ts) == \-1) { - perror("clock_gettime"); - exit(EXIT_FAILURE); - } -\& - printf("CPU\-time clock for PID %s is %jd.%09ld seconds\en", - argv[1], (intmax_t) ts.tv_sec, ts.tv_nsec); - exit(EXIT_SUCCESS); -} -.EE -.\" SRC END -.SH SEE ALSO -.BR clock_getres (2), -.BR timer_create (2), -.BR pthread_getcpuclockid (3), -.BR time (7) |