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-.\" Copyright (c) 2017, Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH pthread_mutexattr_getpshared 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-pthread_mutexattr_getpshared, pthread_mutexattr_setpshared \- get/set
-process-shared mutex attribute
-.SH LIBRARY
-POSIX threads library
-.RI ( libpthread ", " \-lpthread )
-.SH SYNOPSIS
-.nf
-.B #include <pthread.h>
-.P
-.B int pthread_mutexattr_getpshared(
-.BI " const pthread_mutexattr_t *restrict " attr ,
-.BI " int *restrict " pshared );
-.BI "int pthread_mutexattr_setpshared(pthread_mutexattr_t *" attr ,
-.BI " int " pshared );
-.fi
-.SH DESCRIPTION
-These functions get and set the process-shared attribute
-in a mutex attributes object.
-This attribute must be appropriately set to ensure correct,
-efficient operation of a mutex created using this attributes object.
-.P
-The process-shared attribute can have one of the following values:
-.TP
-.B PTHREAD_PROCESS_PRIVATE
-Mutexes created with this attributes object are to be shared
-only among threads in the same process that initialized the mutex.
-This is the default value for the process-shared mutex attribute.
-.TP
-.B PTHREAD_PROCESS_SHARED
-Mutexes created with this attributes object can be shared between
-any threads that have access to the memory containing the object,
-including threads in different processes.
-.P
-.BR pthread_mutexattr_getpshared ()
-places the value of the process-shared attribute of
-the mutex attributes object referred to by
-.I attr
-in the location pointed to by
-.IR pshared .
-.P
-.BR pthread_mutexattr_setpshared ()
-sets the value of the process-shared attribute of
-the mutex attributes object referred to by
-.I attr
-to the value specified in
-.BR pshared .
-.P
-If
-.I attr
-does not refer to an initialized mutex attributes object,
-the behavior is undefined.
-.SH RETURN VALUE
-On success, these functions return 0.
-On error, they return a positive error number.
-.SH ERRORS
-.BR pthread_mutexattr_setpshared ()
-can fail with the following errors:
-.TP
-.B EINVAL
-The value specified in
-.I pshared
-is invalid.
-.TP
-.B ENOTSUP
-.I pshared is
-.B PTHREAD_PROCESS_SHARED
-but the implementation does not support process-shared mutexes.
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2001.
-.SH SEE ALSO
-.ad l
-.nh
-.BR pthread_mutexattr_init (3),
-.BR pthreads (7)