.\"     $NetBSD: pthread_attr_getname_np.3,v 1.6 2010/07/09 10:55:57 jruoho Exp $
.\"
.\" Copyright (c)2007 YAMAMOTO Takashi,
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.\" ------------------------------------------------------------
.Dd July 7, 2010
.Dt PTHREAD_ATTR_GETNAME_NP 3
.Os
.Sh NAME
.Nm pthread_attr_getname_np
.Nd get and set descriptive name of an attribute
.\" ------------------------------------------------------------
.Sh LIBRARY
.Lb libpthread
.\" ------------------------------------------------------------
.Sh SYNOPSIS
.In pthread.h
.Ft int
.Fn pthread_attr_getname_np \
"const pthread_attr_t attr" "char *name" "size_t len"
.Ft int
.Fn pthread_attr_setname_np \
"pthread_attr_t attr" "const char *name" "void *arg"
.\" ------------------------------------------------------------
.Sh DESCRIPTION
The
.Fn pthread_attr_getname_np
function gets the descriptive name of a thread attribute.
It takes the following arguments:
.Bl -tag -width target -offset indent
.It Fa attr
The attribute whose descriptive name will be obtained.
.It Fa name
The buffer to be filled with the descriptive name of the attribute.
.It Fa len
The size of the buffer
.Fa name
in bytes.
.El
.Pp
The
.Fn pthread_attr_setname_np
function sets the descriptive name of a thread attribute.
It takes the following arguments:
.Bl -tag -width attr -offset indent
.It Fa attr
The attribute whose descriptive name will be set.
.It Fa name
The
.Xr printf 3
format string to be used to construct the descriptive name of the attribute.
The resulted descriptive name should be shorter than
.Dv PTHREAD_MAX_NAMELEN_NP .
.It Fa arg
The
.Xr printf 3
argument used with
.Fa name .
.El
.\" ------------------------------------------------------------
.Sh RETURN VALUES
Both functions return 0 on success.
Otherwise, an error number is returned.
.\" ------------------------------------------------------------
.Sh COMPATIBILITY
Both functions are non-standard extensions.
.\" ------------------------------------------------------------
.Sh ERRORS
No errors are defined for
.Fn pthread_attr_getname_np .
.Pp
The
.Fn pthread_attr_setname_np
function may fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
The supplied descriptive
.Fa name
was longer than
.Dv PTHREAD_MAX_NAMELEN_NP .
.It Bq Er ENOMEM
There was insufficient memory for the operation.
.El
.\" ------------------------------------------------------------
.Sh SEE ALSO
.Xr pthread_attr 3 ,
.Xr pthread_getname_np 3