pthread_getcpuclockid(3p) [centos man page]

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

PROLOG

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

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

       The pthread_getcpuclockid() function may fail if:

       ESRCH  The value specified by thread_id does not refer to an existing thread.

       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

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       clock_getcpuclockid(), clock_getres(), timer_create(), the Base Definitions volume of IEEE Std 1003.1-2001, <pthread.h>, <time.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .

IEEE
/The Open Group						       2003						 PTHREAD_GETCPUCLOCKID(3P)

PTHREAD_CONDATTR_GETCLOCK(3P)				     POSIX Programmer's Manual				     PTHREAD_CONDATTR_GETCLOCK(3P)

PROLOG

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

NAME

       pthread_condattr_getclock, pthread_condattr_setclock - get and set the clock selection condition variable attribute (ADVANCED REALTIME)

SYNOPSIS

       #include <pthread.h>

       int pthread_condattr_getclock(const pthread_condattr_t *restrict attr,
	      clockid_t *restrict clock_id);
       int pthread_condattr_setclock(pthread_condattr_t *attr,
	      clockid_t clock_id);

DESCRIPTION

       The pthread_condattr_getclock() function shall obtain the value of the clock attribute from the attributes object referenced by	attr.  The
       pthread_condattr_setclock()  function shall set the clock attribute in an initialized attributes object referenced by attr. If pthread_con-
       dattr_setclock() is called with a clock_id argument that refers to a CPU-time clock, the call shall fail.

       The clock attribute is the clock ID of the clock that shall be used to  measure	the  timeout  service  of  pthread_cond_timedwait().   The
       default value of the clock attribute shall refer to the system clock.

RETURN VALUE

       If  successful,	the  pthread_condattr_getclock()  function  shall  return zero and store the value of the clock attribute of attr into the
       object referenced by the clock_id argument.  Otherwise, an error number shall be returned to indicate the error.

       If successful, the pthread_condattr_setclock() function shall return zero; otherwise, an error number shall be  returned  to  indicate  the
       error.

ERRORS

       These functions may fail if:

       EINVAL The value specified by attr is invalid.

       The pthread_condattr_setclock() function may fail if:

       EINVAL The value specified by clock_id does not refer to a known clock, or is a CPU-time clock.

       These functions shall not return an error code of [EINTR].

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       pthread_cond_destroy(),	 pthread_cond_timedwait(),   pthread_condattr_destroy(),  pthread_condattr_getpshared(),  pthread_condattr_init(),
       pthread_condattr_setpshared(), pthread_create(), pthread_mutex_init(), the Base Definitions volume of IEEE Std 1003.1-2001, <pthread.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .

IEEE
/The Open Group						       2003					     PTHREAD_CONDATTR_GETCLOCK(3P)