156 lines
4.2 KiB
C
156 lines
4.2 KiB
C
/* XFce 4 - Netload Plugin
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* Copyright (c) 2003 Bernhard Walle <bernhard.walle@gmx.de>
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*
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* Id: $Id: net.c,v 1.2 2003/08/25 21:08:58 bwalle Exp $
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* This is just a wrapper between the netload-plugin and the wormulon source.
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* Wormulon is a small command-line util which displays the netload. You can find it
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* at http://raisdorf.net/wormulon. Most sourcecode is taken from wormulon.
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*
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* Thanks to Hendrik Scholz. Only his work made it possible to support a large
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* number of operating systems quickly without a library! Without him only
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* Linux and FreeBSD (with foreign code from IceWM) would be supported.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* From Wormulon */
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#include "net.h"
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#include "os.h"
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#include "wormulon.h"
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#include "slurm.h" /* slurm structs */
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#ifdef __HPUX__
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#include "wormulon/hpux.h"
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#include "wormulon/hpux.c"
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#elif __FreeBSD__
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#include "wormulon/freebsd.h"
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#include "wormulon/freebsd.c"
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#elif __linux__
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#include "wormulon/linux.h"
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#include "wormulon/linux.c"
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#elif __OpenBSD__ || __MicroBSD__
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#include "wormulon/openbsd.h"
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#include "wormulon/openbsd.c"
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#elif __NetBSD__
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#include "wormulon/netbsd.h"
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#include "wormulon/netbsd.c"
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#elif __Solaris__
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#include "wormulon/solaris.h"
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#include "wormulon/solaris.c"
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#else
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/* should not get here */
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#error "OS not supported"
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#endif
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void init_netload(netdata* data, const char* device)
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{
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memset( data, 0, sizeof(netdata) );
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strncpy( data->ifdata.if_name, device, 9 );
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data->ifdata.if_name[9] = '\0';
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if (checkinterface(data) != TRUE)
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{
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data->correct_interface = FALSE;
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return;
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}
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/* init in a sane state */
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get_stat(data);
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data->backup_in = data->stats.rx_bytes;
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data->backup_out = data->stats.tx_bytes;
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data->correct_interface = TRUE;
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}
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/**
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* Gets the current netload.
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* @param in Will be filled with the "in"-load.
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* @param out Will be filled with the "out"-load.
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* @param tot Will be filled with the "total"-load.
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*/
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void get_current_netload(netdata* data, unsigned long *in, unsigned long *out, unsigned long *tot)
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{
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struct timeval curr_time;
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double delta_t;
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if( ! data->correct_interface )
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{
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if( in != NULL && out != NULL && tot != NULL )
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{
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*in = *out = *tot = 0;
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}
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}
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gettimeofday(&curr_time, NULL);
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delta_t = (double) ((curr_time.tv_sec - data->prev_time.tv_sec) * 1000000L
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+ (curr_time.tv_usec - data->prev_time.tv_usec)) / 1000000.0;
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/* update */
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get_stat(data);
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if (data->backup_in > data->stats.rx_bytes)
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{
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data->cur_in = (int) data->stats.rx_bytes / delta_t;
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}
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else
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{
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data->cur_in = (int) (data->stats.rx_bytes - data->backup_in) / delta_t;
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}
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if (data->backup_out > data->stats.tx_bytes)
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{
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data->cur_out = (int) data->stats.tx_bytes / delta_t;
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}
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else
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{
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data->cur_out = (int) (data->stats.tx_bytes - data->backup_out) / delta_t;
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}
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if( in != NULL && out != NULL && tot != NULL )
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{
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*in = data->cur_in;
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*out = data->cur_out;
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*tot = *in + *out;
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}
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/* save 'new old' values */
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data->backup_in = data->stats.rx_bytes;
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data->backup_out = data->stats.tx_bytes;
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/* do the same with time */
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data->prev_time.tv_sec = curr_time.tv_sec;
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data->prev_time.tv_usec = curr_time.tv_usec;
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}
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void close_netload(netdata* data)
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{
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/* We need not code here */
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}
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