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+'\" et
+.TH PTHREAD_BARRIERATTR_GETPSHARED "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+.\"
+.SH NAME
+pthread_barrierattr_getpshared,
+pthread_barrierattr_setpshared
+\(em get and set the process-shared attribute of the barrier
+attributes object
+.SH SYNOPSIS
+.LP
+.nf
+#include <pthread.h>
+.P
+int pthread_barrierattr_getpshared(const pthread_barrierattr_t
+    *restrict \fIattr\fP, int *restrict \fIpshared\fP);
+int pthread_barrierattr_setpshared(pthread_barrierattr_t *\fIattr\fP,
+    int \fIpshared\fP);
+.fi
+.SH DESCRIPTION
+The
+\fIpthread_barrierattr_getpshared\fR()
+function shall obtain the value of the
+.IR process-shared
+attribute from the attributes object referenced by
+.IR attr .
+The
+\fIpthread_barrierattr_setpshared\fR()
+function shall set the
+.IR process-shared
+attribute in an initialized attributes object referenced by
+.IR attr .
+.P
+The
+.IR process-shared
+attribute is set to PTHREAD_PROCESS_SHARED to
+permit a barrier to be operated upon by any thread that has access to
+the memory where the barrier is allocated. See
+.IR "Section 2.9.9" ", " "Synchronization Object Copies and Alternative Mappings"
+for further requirements. The default value of the attribute
+shall be PTHREAD_PROCESS_PRIVATE. Both constants
+PTHREAD_PROCESS_SHARED and PTHREAD_PROCESS_PRIVATE are defined in
+.IR <pthread.h> .
+.P
+Additional attributes, their default values, and the names of the
+associated functions to get and set those attribute values are
+implementation-defined.
+.P
+The behavior is undefined if the value specified by the
+.IR attr
+argument to
+\fIpthread_barrierattr_getpshared\fR()
+or
+\fIpthread_barrierattr_setpshared\fR()
+does not refer to an initialized barrier attributes object.
+.SH "RETURN VALUE"
+If successful, the
+\fIpthread_barrierattr_getpshared\fR()
+function shall return zero and store the value of the
+.IR process-shared
+attribute of
+.IR attr
+into the object referenced by the
+.IR pshared
+parameter. Otherwise, an error number shall be returned to indicate
+the error.
+.P
+If successful, the
+\fIpthread_barrierattr_setpshared\fR()
+function shall return zero; otherwise, an error number shall be
+returned to indicate the error.
+.SH ERRORS
+The
+\fIpthread_barrierattr_setpshared\fR()
+function may fail if:
+.TP
+.BR EINVAL
+The new value specified for the
+.IR process-shared
+attribute is not one of the legal values PTHREAD_PROCESS_SHARED
+or PTHREAD_PROCESS_PRIVATE.
+.P
+These functions shall not return an error code of
+.BR [EINTR] .
+.LP
+.IR "The following sections are informative."
+.SH EXAMPLES
+None.
+.SH "APPLICATION USAGE"
+The
+\fIpthread_barrierattr_getpshared\fR()
+and
+\fIpthread_barrierattr_setpshared\fR()
+functions are part of the Thread Process-Shared Synchronization
+option and need not be provided on all implementations.
+.SH RATIONALE
+If an implementation detects that the value specified by the
+.IR attr
+argument to
+\fIpthread_barrierattr_getpshared\fR()
+or
+\fIpthread_barrierattr_setpshared\fR()
+does not refer to an initialized barrier attributes object, it is
+recommended that the function should fail and report an
+.BR [EINVAL] 
+error.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.ad l
+.IR "\fIpthread_barrier_destroy\fR\^(\|)",
+.IR "\fIpthread_barrierattr_destroy\fR\^(\|)"
+.ad b
+.P
+The Base Definitions volume of POSIX.1\(hy2017,
+.IR "\fB<pthread.h>\fP"
+.\"
+.SH 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 .
+.PP
+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 .