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+'\" et
+.TH PTHREAD_MUTEXATTR_GETTYPE "3P" 2013 "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_mutexattr_gettype,
+pthread_mutexattr_settype
+\(em get and set the mutex type attribute
+.SH SYNOPSIS
+.LP
+.nf
+#include <pthread.h>
+.P
+int pthread_mutexattr_gettype(const pthread_mutexattr_t *restrict \fIattr\fP,
+    int *restrict \fItype\fP);
+int pthread_mutexattr_settype(pthread_mutexattr_t *\fIattr\fP, int \fItype\fP);
+.fi
+.SH DESCRIPTION
+The
+\fIpthread_mutexattr_gettype\fR()
+and
+\fIpthread_mutexattr_settype\fR()
+functions, respectively, shall get and set the mutex
+.IR type
+attribute. This attribute is set in the
+.IR type
+parameter to these functions. The default value of the
+.IR type
+attribute is PTHREAD_MUTEX_DEFAULT.
+.P
+The type of mutex is contained in the
+.IR type
+attribute of the mutex attributes. Valid mutex types include:
+.sp
+.RS
+PTHREAD_MUTEX_NORMAL
+PTHREAD_MUTEX_ERRORCHECK
+PTHREAD_MUTEX_RECURSIVE
+PTHREAD_MUTEX_DEFAULT
+.RE
+.P
+The mutex type affects the behavior of calls which lock and unlock the
+mutex. See
+.IR "\fIpthread_mutex_lock\fR\^(\|)"
+for details. An implementation may map PTHREAD_MUTEX_DEFAULT to one of
+the other mutex types.
+.P
+The behavior is undefined if the value specified by the
+.IR attr
+argument to
+\fIpthread_mutexattr_gettype\fR()
+or
+\fIpthread_mutexattr_settype\fR()
+does not refer to an initialized mutex attributes object.
+.SH "RETURN VALUE"
+Upon successful completion, the
+\fIpthread_mutexattr_gettype\fR()
+function shall return zero and store the value of the
+.IR type
+attribute of
+.IR attr
+into the object referenced by the
+.IR type
+parameter. Otherwise, an error shall be returned to indicate the error.
+.P
+If successful, the
+\fIpthread_mutexattr_settype\fR()
+function shall return zero; otherwise, an error number shall be
+returned to indicate the error.
+.SH ERRORS
+The
+\fIpthread_mutexattr_settype\fR()
+function shall fail if:
+.TP
+.BR EINVAL
+The value
+.IR type
+is invalid.
+.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"
+It is advised that an application should not use a
+PTHREAD_MUTEX_RECURSIVE mutex with condition variables
+because the implicit unlock performed for a
+\fIpthread_cond_timedwait\fR()
+or
+\fIpthread_cond_wait\fR()
+may not actually release the mutex (if it had been locked multiple
+times). If this happens, no other thread can satisfy the condition of
+the predicate.
+.SH RATIONALE
+If an implementation detects that the value specified by the
+.IR attr
+argument to
+\fIpthread_mutexattr_gettype\fR()
+or
+\fIpthread_mutexattr_settype\fR()
+does not refer to an initialized mutex attributes object, it is
+recommended that the function should fail and report an
+.BR [EINVAL] 
+error.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "\fIpthread_cond_timedwait\fR\^(\|)",
+.IR "\fIpthread_mutex_lock\fR\^(\|)"
+.P
+The Base Definitions volume of POSIX.1\(hy2008,
+.IR "\fB<pthread.h>\fP"
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, Copyright (C) 2013 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group.
+(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/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 .