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CLOCK_GETCPUCLOCKID2(2) FreeBSD System Calls Manual CLOCK_GETCPUCLOCKID2(2) NAME clock_getcpuclockid2, clock_getcpuclockid - retrieve the clock id of a process or LWP LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <time.h> int clock_getcpuclockid2(idtype_t idtype, id_t id, clockid_t *clock_id); int clock_getcpuclockid(pid_t pid, clockid_t *clock_id); DESCRIPTION The cpu_getcpuclockid2() function retrieves the clock_id for the CPU-time clock of the specified id and idtype. Supported idtypes are: P_PID The specified process id or 0 for the current process. P_LWPID The specified LWP id or 0 for the current LWP. The clock_getcpuclockid() function is equivalent to calling clock_getcpuclockid2() with idtype P_PID and id pid. The clock_gettime(2) function can be used with the returned clock_id to retrieve process and LWP CPU usage times. RETURN VALUES The clock_getcpuclockid2() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error. If successful, the clock_getcpuclockid() function will return 0. Otherwise an error number will be returned. ERRORS These functions fail if: [EFAULT] clock_id points outside the process's allocated address space. In addition clock_getcpuclockid2() will fail if: [EINVAL] An unsupported idtype was supplied. SEE ALSO clock_gettime(2) STANDARDS The clock_getcpuclockid() function conforms to IEEE Std 1003.1-2001 ("POSIX.1"). The clock_getcpuclockid2() is a NetBSD extension. HISTORY The clock_getcpuclockid() and clock_getcpuclockid2() functions appeared in NetBSD 8. FreeBSD 14.1-RELEASE-p8 June 24, 2018 FreeBSD 14.1-RELEASE-p8