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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "PTHREAD_CONDATTR_GETCLOCK" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" pthread_condattr_getclock 
+.SH NAME
+pthread_condattr_getclock, pthread_condattr_setclock \- get and set
+the clock selection condition variable attribute
+(\fBADVANCED REALTIME\fP)
+.SH SYNOPSIS
+.LP
+\fB#include <pthread.h>
+.br
+.sp
+int pthread_condattr_getclock(const pthread_condattr_t *restrict\fP
+\fIattr\fP\fB,
+.br
+\ \ \ \ \ \  clockid_t *restrict\fP \fIclock_id\fP\fB);
+.br
+int pthread_condattr_setclock(pthread_condattr_t *\fP\fIattr\fP\fB,
+.br
+\ \ \ \ \ \  clockid_t\fP \fIclock_id\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIpthread_condattr_getclock\fP() function shall obtain the value
+of the \fIclock\fP attribute from the attributes object
+referenced by \fIattr\fP. The \fIpthread_condattr_setclock\fP() function
+shall set the \fIclock\fP attribute in an initialized
+attributes object referenced by \fIattr\fP. If \fIpthread_condattr_setclock\fP()
+is called with a \fIclock_id\fP argument that
+refers to a CPU-time clock, the call shall fail.
+.LP
+The \fIclock\fP attribute is the clock ID of the clock that shall
+be used to measure the timeout service of \fIpthread_cond_timedwait\fP().
+The default value of the \fIclock\fP attribute
+shall refer to the system clock.
+.SH RETURN VALUE
+.LP
+If successful, the \fIpthread_condattr_getclock\fP() function shall
+return zero and store the value of the clock attribute of
+\fIattr\fP into the object referenced by the \fIclock_id\fP argument.
+Otherwise, an error number shall be returned to indicate
+the error.
+.LP
+If successful, the \fIpthread_condattr_setclock\fP() function shall
+return zero; otherwise, an error number shall be returned
+to indicate the error.
+.SH ERRORS
+.LP
+These functions may fail if:
+.TP 7
+.B EINVAL
+The value specified by \fIattr\fP is invalid.
+.sp
+.LP
+The \fIpthread_condattr_setclock\fP() function may fail if:
+.TP 7
+.B EINVAL
+The value specified by \fIclock_id\fP does not refer to a known clock,
+or is a CPU-time clock.
+.sp
+.LP
+These functions shall not return an error code of [EINTR].
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIpthread_cond_destroy\fP() , \fIpthread_cond_timedwait\fP() , \fIpthread_condattr_destroy\fP()
+, \fIpthread_condattr_getpshared\fP() ,1 \fIpthread_condattr_init\fP()
+, \fIpthread_condattr_setpshared\fP() ,1 \fIpthread_create\fP() ,
+\fIpthread_mutex_init\fP() , the Base
+Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<pthread.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- 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 .