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mbufs.c revision 1.9 
      1 /*	$NetBSD: mbufs.c,v 1.9 2000/07/05 11:03:22 ad 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 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
     40 #endif
     41 __RCSID("$NetBSD: mbufs.c,v 1.9 2000/07/05 11:03:22 ad Exp $");
     42 #endif /* not lint */
     43 
     44 #include <sys/param.h>
     45 #include <sys/types.h>
     46 #include <sys/mbuf.h>
     47 
     48 #include <stdlib.h>
     49 #include <string.h>
     50 #include <nlist.h>
     51 #include <paths.h>
     52 #include "systat.h"
     53 #include "extern.h"
     54 
     55 static struct mbstat *mb;
     56 
     57 char *mtnames[] = {
     58 	"free",
     59 	"data",
     60 	"headers",
     61 	"sockets",
     62 	"pcbs",
     63 	"routes",
     64 	"hosts",
     65 	"arps",
     66 	"socknames",
     67 	"zombies",
     68 	"sockopts",
     69 	"frags",
     70 	"rights",
     71 	"ifaddrs",
     72 };
     73 
     74 #define	NNAMES	(sizeof (mtnames) / sizeof (mtnames[0]))
     75 
     76 WINDOW *
     77 openmbufs(void)
     78 {
     79 
     80 	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
     81 }
     82 
     83 void
     84 closembufs(WINDOW *w)
     85 {
     86 
     87 	if (w == NULL)
     88 		return;
     89 	wclear(w);
     90 	wrefresh(w);
     91 	delwin(w);
     92 }
     93 
     94 void
     95 labelmbufs(void)
     96 {
     97 
     98 	wmove(wnd, 0, 0); wclrtoeol(wnd);
     99 	mvwaddstr(wnd, 0, 10,
    100 	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
    101 }
    102 
    103 void
    104 showmbufs(void)
    105 {
    106 	int i, j, max, index;
    107 	char buf[10];
    108 
    109 	if (mb == 0)
    110 		return;
    111 	for (j = 0; j < getmaxy(wnd); j++) {
    112 		max = 0, index = -1;
    113 		for (i = 0; i < getmaxy(wnd); i++)
    114 			if (mb->m_mtypes[i] > max) {
    115 				max = mb->m_mtypes[i];
    116 				index = i;
    117 			}
    118 		if (max == 0)
    119 			break;
    120 		if (j > NNAMES)
    121 			mvwprintw(wnd, 1+j, 0, "%10d", index);
    122 		else
    123 			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
    124 		wmove(wnd, 1 + j, 10);
    125 		if (max > 60) {
    126 			snprintf(buf, sizeof buf, " %5d", max);
    127 			max = 60;
    128 			while (max--)
    129 				waddch(wnd, 'X');
    130 			waddstr(wnd, buf);
    131 		} else {
    132 			wclrtoeol(wnd);
    133 			whline(wnd, 'X', max);
    134 		}
    135 		mb->m_mtypes[index] = 0;
    136 	}
    137 	wmove(wnd, 1+j, 0); wclrtobot(wnd);
    138 }
    139 
    140 static struct nlist namelist[] = {
    141 #define	X_MBSTAT	0
    142 	{ "_mbstat" },
    143 	{ "" }
    144 };
    145 
    146 int
    147 initmbufs(void)
    148 {
    149 
    150 	if (namelist[X_MBSTAT].n_type == 0) {
    151 		if (kvm_nlist(kd, namelist)) {
    152 			nlisterr(namelist);
    153 			return(0);
    154 		}
    155 		if (namelist[X_MBSTAT].n_type == 0) {
    156 			error("namelist on %s failed", _PATH_UNIX);
    157 			return(0);
    158 		}
    159 	}
    160 	if (mb == 0)
    161 		mb = (struct mbstat *)calloc(1, sizeof (*mb));
    162 	return(1);
    163 }
    164 
    165 void
    166 fetchmbufs(void)
    167 {
    168 
    169 	if (namelist[X_MBSTAT].n_type == 0)
    170 		return;
    171 	NREAD(X_MBSTAT, mb, sizeof (*mb));
    172 }
    173