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mbufs.c revision 1.12 
      1 /*	$NetBSD: mbufs.c,v 1.12 2003/08/07 11:15:59 agc 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
     36 #endif
     37 __RCSID("$NetBSD: mbufs.c,v 1.12 2003/08/07 11:15:59 agc Exp $");
     38 #endif /* not lint */
     39 
     40 #include <sys/param.h>
     41 #include <sys/mbuf.h>
     42 
     43 #include <nlist.h>
     44 #include <stdlib.h>
     45 
     46 #include "systat.h"
     47 #include "extern.h"
     48 
     49 static struct mbstat *mb;
     50 
     51 char *mtnames[] = {
     52 	"free",
     53 	"data",
     54 	"headers",
     55 	"sockets",
     56 	"pcbs",
     57 	"routes",
     58 	"hosts",
     59 	"arps",
     60 	"socknames",
     61 	"zombies",
     62 	"sockopts",
     63 	"frags",
     64 	"rights",
     65 	"ifaddrs",
     66 };
     67 
     68 #define	NNAMES	(sizeof (mtnames) / sizeof (mtnames[0]))
     69 
     70 WINDOW *
     71 openmbufs(void)
     72 {
     73 
     74 	return (subwin(stdscr, -1, 0, 5, 0));
     75 }
     76 
     77 void
     78 closembufs(WINDOW *w)
     79 {
     80 
     81 	if (w == NULL)
     82 		return;
     83 	wclear(w);
     84 	wrefresh(w);
     85 	delwin(w);
     86 }
     87 
     88 void
     89 labelmbufs(void)
     90 {
     91 
     92 	wmove(wnd, 0, 0); wclrtoeol(wnd);
     93 	mvwaddstr(wnd, 0, 10,
     94 	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
     95 }
     96 
     97 void
     98 showmbufs(void)
     99 {
    100 	int i, j, max, index;
    101 	char buf[10];
    102 
    103 	if (mb == 0)
    104 		return;
    105 	for (j = 0; j < getmaxy(wnd); j++) {
    106 		max = 0, index = -1;
    107 		for (i = 0; i < getmaxy(wnd); i++)
    108 			if (mb->m_mtypes[i] > max) {
    109 				max = mb->m_mtypes[i];
    110 				index = i;
    111 			}
    112 		if (max == 0)
    113 			break;
    114 		if (j > NNAMES)
    115 			mvwprintw(wnd, 1+j, 0, "%10d", index);
    116 		else
    117 			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
    118 		wmove(wnd, 1 + j, 10);
    119 		if (max > 60) {
    120 			snprintf(buf, sizeof buf, " %5d", max);
    121 			max = 60;
    122 			while (max--)
    123 				waddch(wnd, 'X');
    124 			waddstr(wnd, buf);
    125 		} else {
    126 			wclrtoeol(wnd);
    127 			whline(wnd, 'X', max);
    128 		}
    129 		mb->m_mtypes[index] = 0;
    130 	}
    131 	wmove(wnd, 1+j, 0); wclrtobot(wnd);
    132 }
    133 
    134 static struct nlist namelist[] = {
    135 #define	X_MBSTAT	0
    136 	{ "_mbstat" },
    137 	{ "" }
    138 };
    139 
    140 int
    141 initmbufs(void)
    142 {
    143 
    144 	if (namelist[X_MBSTAT].n_type == 0) {
    145 		if (kvm_nlist(kd, namelist)) {
    146 			nlisterr(namelist);
    147 			return(0);
    148 		}
    149 		if (namelist[X_MBSTAT].n_type == 0) {
    150 			error("No namelist");
    151 			return(0);
    152 		}
    153 	}
    154 	if (mb == 0)
    155 		mb = (struct mbstat *)calloc(1, sizeof (*mb));
    156 	return(1);
    157 }
    158 
    159 void
    160 fetchmbufs(void)
    161 {
    162 
    163 	if (namelist[X_MBSTAT].n_type == 0)
    164 		return;
    165 	NREAD(X_MBSTAT, mb, sizeof (*mb));
    166 }
    167