PTHREAD_GETCPUCLOCKID(3)   POSIX Programmer's Manual  PTHREAD_GETCPUCLOCKID(3)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NAME
       pthread_getcpuclockid -- access a thread CPU-time clock (ADVANCED
       REALTIME THREADS)

SYNOPSIS
       #include <pthread.h>
       #include <time.h>

       int pthread_getcpuclockid(pthread_t thread__id, clockid_t *clock__id);

DESCRIPTION
       The pthread__getcpuclockid() function shall return in clock__id the clock
       ID of the CPU-time clock of the thread specified by thread__id, if the
       thread specified by thread__id exists.

RETURN VALUE
       Upon successful completion, pthread__getcpuclockid() shall return zero;
       otherwise, an error number shall be returned to indicate the error.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The pthread__getcpuclockid() function is part of the Thread CPU-Time
       Clocks option and need not be provided on all implementations.

RATIONALE
       If an implementation detects use of a thread ID after the end of its
       lifetime, it is recommended that the function should fail and report an
       [ESRCH] error.

FUTURE DIRECTIONS
       None.

SEE ALSO
       clock__getcpuclockid(), clock__getres(), timer__create()

       The Base Definitions volume of POSIX.1-2017, <pthread.h>, <time.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  In the event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE and The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017             PTHREAD_GETCPUCLOCKID(3)
