1 /* $NetBSD: mbufs.c,v 1.16 2012/11/23 01:43:10 christos 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 1.16 2012/11/23 01:43:10 christos Exp $"); 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #define MBUFTYPES 42 #include <sys/mbuf.h> 43 #include <sys/sysctl.h> 44 45 #include <stdlib.h> 46 #include <errno.h> 47 #include <string.h> 48 49 #include "systat.h" 50 #include "extern.h" 51 52 static struct mbstat *mb; 53 54 #define NNAMES __arraycount(mbuftypes) 55 56 WINDOW * 57 openmbufs(void) 58 { 59 60 return (subwin(stdscr, -1, 0, 5, 0)); 61 } 62 63 void 64 closembufs(WINDOW *w) 65 { 66 67 if (w == NULL) 68 return; 69 wclear(w); 70 wrefresh(w); 71 delwin(w); 72 } 73 74 void 75 labelmbufs(void) 76 { 77 78 wmove(wnd, 0, 0); wclrtoeol(wnd); 79 mvwaddstr(wnd, 0, 10, 80 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60"); 81 } 82 83 void 84 showmbufs(void) 85 { 86 int i, j, max, idx; 87 char buf[10]; 88 89 if (mb == 0) 90 return; 91 for (j = 1; j <= getmaxy(wnd); j++) { 92 max = 0, idx = -1; 93 for (i = 0; i < getmaxy(wnd); i++) 94 if (mb->m_mtypes[i] > max) { 95 max = mb->m_mtypes[i]; 96 idx = i; 97 } 98 if (max == 0) 99 break; 100 if (j >= (int)NNAMES) 101 mvwprintw(wnd, j, 0, "%10d", idx); 102 else 103 mvwprintw(wnd, j, 0, "%-10.10s", &mbuftypes[idx][2]); 104 wmove(wnd, j, 10); 105 if (max > 60) { 106 snprintf(buf, sizeof buf, " %5d", max); 107 max = 60; 108 while (max--) 109 waddch(wnd, 'X'); 110 waddstr(wnd, buf); 111 } else { 112 wclrtoeol(wnd); 113 whline(wnd, 'X', max); 114 } 115 mb->m_mtypes[idx] = 0; 116 } 117 wmove(wnd, j, 0); 118 wclrtobot(wnd); 119 } 120 121 int 122 initmbufs(void) 123 { 124 if (mb == 0) 125 mb = calloc(1, sizeof (*mb)); 126 return(1); 127 } 128 129 void 130 fetchmbufs(void) 131 { 132 size_t len = sizeof(*mb); 133 if (sysctlbyname("kern.mbuf.stats", mb, &len, NULL, 0)) 134 error("error getting \"kern.mbuf.stats\": %s", strerror(errno)); 135 } 136