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.\" Copyright 2018 Joyent, Inc.
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.Dd "August 22, 2018"
.Dt PTHREAD_ATTR_GETNAME_NP 3C
.Os
.Sh NAME
.Nm pthread_attr_getname_np ,
.Nm pthread_attr_setname_np
.Nd get or set thread name attribute
.Sh SYNOPSIS
.In pthread.h
.
.Ft int
.Fo pthread_attr_getname_np
.Fa "pthread_attr_t *restrict attr"
.Fa "char *name"
.Fa "size_t len"
.Fc
.
.Ft int
.Fo pthread_attr_setname_np
.Fa "pthread_attr_t *restrict attr"
.Fa "const char *name"
.Fc
.
.Sh DESCRIPTION
The
.Fn pthread_attr_setname_np
and
.Fn pthread_attr_getname_np
functions, respectively, set and get the thread name attribute in
.Fa attr
to
.Fa name .
For
.Fn pthread_attr_getname_np ,
.Fa len
is the size of
.Fa name .
Any threads created with
.Xr pthread_create 3c
using
.Fa attr
will have their name set to
.Fa name
upon creation.
.Pp
Thread names are limited to
.Dv PTHREAD_MAX_NAMELEN_NP
including the terminating NUL.
They may only contain printable ASCII characters.
.Sh RETURN VALUES
Upon successful completion, the
.Fn pthread_attr_getname_np
and
.Fn pthread_attr_setname_np
functions return
.Sy 0 .
Otherwise, an error number is returned to indicate the error.
.Sh ERRORS
The
.Fn pthread_attr_getname_np
function may fail with:
.Bl -tag -width Er
.It Er EINVAL
The
.Fa name
argument is
.Sy NULL .
.It Er ERANGE
The size of
.Fa name
as indicated by
.Fa len
is too small to contain the thread name.
The buffer may be over-written with partial contents of the thread name.
.El
.Pp
The
.Fn pthread_attr_setname_np
function may fail with:
.Bl -tag -width Er
.It Er ERANGE
The length of name given in
.Fa name
exceeds the maximum size allowed.
.El
.Sh INTERFACE STABILITY
.Sy Uncommitted
.Sh MT-LEVEL
.Sy MT-Safe
.Sh SEE ALSO
.Xr pthread_create 3c ,
.Xr pthread_getname_np 3c