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mbufs.c revision 1.3 
      1 /*	$NetBSD: mbufs.c,v 1.3 1997/05/24 00:48:26 jtc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1980, 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
     39 #endif
     40 static char rcsid[] = "$NetBSD: mbufs.c,v 1.3 1997/05/24 00:48:26 jtc Exp $";
     41 #endif /* not lint */
     42 
     43 #include <sys/param.h>
     44 #include <sys/types.h>
     45 #include <sys/mbuf.h>
     46 
     47 #include <stdlib.h>
     48 #include <string.h>
     49 #include <nlist.h>
     50 #include <paths.h>
     51 #include "systat.h"
     52 #include "extern.h"
     53 
     54 static struct mbstat *mb;
     55 
     56 char *mtnames[] = {
     57 	"free",
     58 	"data",
     59 	"headers",
     60 	"sockets",
     61 	"pcbs",
     62 	"routes",
     63 	"hosts",
     64 	"arps",
     65 	"socknames",
     66 	"zombies",
     67 	"sockopts",
     68 	"frags",
     69 	"rights",
     70 	"ifaddrs",
     71 };
     72 
     73 #define	NNAMES	(sizeof (mtnames) / sizeof (mtnames[0]))
     74 
     75 WINDOW *
     76 openmbufs()
     77 {
     78 	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
     79 }
     80 
     81 void
     82 closembufs(w)
     83 	WINDOW *w;
     84 {
     85 	if (w == NULL)
     86 		return;
     87 	wclear(w);
     88 	wrefresh(w);
     89 	delwin(w);
     90 }
     91 
     92 void
     93 labelmbufs()
     94 {
     95 	wmove(wnd, 0, 0); wclrtoeol(wnd);
     96 	mvwaddstr(wnd, 0, 10,
     97 	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
     98 }
     99 
    100 void
    101 showmbufs()
    102 {
    103 	register int i, j, max, index;
    104 	char buf[10];
    105 
    106 	if (mb == 0)
    107 		return;
    108 	for (j = 0; j < getmaxy(wnd); j++) {
    109 		max = 0, index = -1;
    110 		for (i = 0; i < getmaxy(wnd); i++)
    111 			if (mb->m_mtypes[i] > max) {
    112 				max = mb->m_mtypes[i];
    113 				index = i;
    114 			}
    115 		if (max == 0)
    116 			break;
    117 		if (j > NNAMES)
    118 			mvwprintw(wnd, 1+j, 0, "%10d", index);
    119 		else
    120 			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
    121 		wmove(wnd, 1 + j, 10);
    122 		if (max > 60) {
    123 			sprintf(buf, " %d", max);
    124 			max = 60;
    125 			while (max--)
    126 				waddch(wnd, 'X');
    127 			waddstr(wnd, buf);
    128 		} else {
    129 			while (max--)
    130 				waddch(wnd, 'X');
    131 			wclrtoeol(wnd);
    132 		}
    133 		mb->m_mtypes[index] = 0;
    134 	}
    135 	wmove(wnd, 1+j, 0); wclrtobot(wnd);
    136 }
    137 
    138 static struct nlist namelist[] = {
    139 #define	X_MBSTAT	0
    140 	{ "_mbstat" },
    141 	{ "" }
    142 };
    143 
    144 int
    145 initmbufs()
    146 {
    147 	if (namelist[X_MBSTAT].n_type == 0) {
    148 		if (kvm_nlist(kd, namelist)) {
    149 			nlisterr(namelist);
    150 			return(0);
    151 		}
    152 		if (namelist[X_MBSTAT].n_type == 0) {
    153 			error("namelist on %s failed", _PATH_UNIX);
    154 			return(0);
    155 		}
    156 	}
    157 	if (mb == 0)
    158 		mb = (struct mbstat *)calloc(1, sizeof (*mb));
    159 	return(1);
    160 }
    161 
    162 void
    163 fetchmbufs()
    164 {
    165 	if (namelist[X_MBSTAT].n_type == 0)
    166 		return;
    167 	NREAD(X_MBSTAT, mb, sizeof (*mb));
    168 }
    169