105 lines
4.0 KiB
Plaintext
105 lines
4.0 KiB
Plaintext
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.\"############################################################################
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.\" $Id: genders_getnumnodes.3,v 1.8 2010-02-02 00:04:34 chu11 Exp $
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.\"############################################################################
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.\" Copyright (C) 2007-2019 Lawrence Livermore National Security, LLC.
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.\" Copyright (C) 2001-2007 The Regents of the University of California.
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.\" Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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.\" Written by Jim Garlick <garlick@llnl.gov> and Albert Chu <chu11@llnl.gov>.
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.\" UCRL-CODE-2003-004.
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.\"
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.\" This file is part of Genders, a cluster configuration database.
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.\" For details, see <http://www.llnl.gov/linux/genders/>.
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.\"
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.\" Genders is free software; you can redistribute it and/or modify it under
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.\" the terms of the GNU General Public License as published by the Free
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.\" Software Foundation; either version 2 of the License, or (at your option)
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.\" any later version.
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.\"
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.\" Genders is distributed in the hope that it will be useful, but WITHOUT ANY
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.\" WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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.\" FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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.\" details.
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.\"
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.\" You should have received a copy of the GNU General Public License along
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.\" with Genders. If not, see <http://www.gnu.org/licenses/>.
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.\"############################################################################
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.TH GENDERS_GETNUMNODES 3 "August 2003" "LLNL" "LIBGENDERS"
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.SH NAME
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genders_getnumnodes, genders_getnumattrs, genders_getmaxattrs,
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genders_getmaxnodelen, genders_getmaxattrlen, genders_getmaxvallen \-
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genders statistics routines
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.SH SYNOPSIS
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.B #include <genders.h>
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.sp
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.BI "int genders_getnumnodes(genders_t handle);"
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.sp
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.BI "int genders_getnumattrs(genders_t handle);"
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.sp
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.BI "int genders_getmaxattrs(genders_t handle);"
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.sp
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.BI "int genders_getmaxnodelen(genders_t handle);"
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.sp
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.BI "int genders_getmaxattrlen(genders_t handle);"
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.sp
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.BI "int genders_getmaxvallen(genders_t handle);"
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.br
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.SH DESCRIPTION
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\fBgenders_getnumnodes()\fR, \fBgenders_getnumattrs()\fR,
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\fBgenders_getmaxattrs()\fR, \fBgenders_getmaxnodelen()\fR,
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\fBgenders_getmaxattrlen()\fR, and \fBgenders_getmaxvallen()\fR get
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statistics about the genders file associated with \fIhandle\fR.
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\fBgenders_getnumnodes()\fR returns the number of nodes stored in the
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genders file.
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\fBgenders_getnumattrs()\fR returns the number of attributes listed in
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the genders file.
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\fBgenders_getmaxattrs()\fR returns the maximum number of attributes
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listed with a node in the genders file.
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\fBgenders_getmaxnodelen()\fR returns the maximum length of any node
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listed in the genders file.
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\fBgenders_getmaxattrlen()\fR returns the maximum length of any
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attribute listed in the genders file.
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\fBgenders_getmaxvallen()\fR returns the maximum length of any
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attribute value listed in the genders file.
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In general, \fBgenders_getnumnodes()\fR, \fBgenders_getnumattrs()\fR,
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\fBgenders_getmaxattrs()\fR, \fBgenders_getmaxnodelen()\fR,
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\fBgenders_getmaxattrlen()\fR, and \fBgenders_getmaxvallen()\fR are
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used so a programmer can dynamically allocate a proper amount of
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memory to store genders file information in.
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.br
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.SH RETURN VALUES
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On success, 0 is returned. On error, -1 is returned, and an error
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code is returned in \fIhandle\fR. The error code can be retrieved via
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.BR genders_errnum (3)
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, and a description of the error code can be retrieved via
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.BR genders_strerror (3).
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Error codes are defined in genders.h.
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.br
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.SH ERRORS
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.TP
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.B GENDERS_ERR_NULLHANDLE
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The \fIhandle\fR parameter is NULL. The genders handle must be
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created with
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.BR genders_handle_create (3).
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.TP
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.B GENDERS_ERR_NOTLOADED
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.BR genders_load_data (3)
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has not been called to load genders data.
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.TP
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.B GENDERS_ERR_MAGIC
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\fIhandle\fR has an incorrect magic number. \fIhandle\fR does not
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point to a genders handle or \fIhandle\fR has been destroyed by
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.BR genders_handle_destroy (3).
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.br
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.SH FILES
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/usr/include/genders.h
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.SH SEE ALSO
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libgenders(3), genders_handle_create(3), genders_load_data(3),
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genders_errnum(3), genders_strerror(3)
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