Annotation of src/usr.bin/systat/mbufs.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: mbufs.c,v 1.2 1995/01/20 08:52:02 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 1.2 1995/01/20 08:52:02 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 < wnd->maxy; j++) {
! 109: max = 0, index = -1;
! 110: for (i = 0; i < wnd->maxy; 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: }
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