mbufs.c revision 87715
1/*- 2 * Copyright (c) 1980, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#include <sys/cdefs.h> 35 36__FBSDID("$FreeBSD: head/usr.bin/systat/mbufs.c 87715 2001-12-12 00:13:37Z markm $"); 37 38#ifdef lint 39static const char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 40#endif 41 42#include <sys/param.h> 43#include <sys/types.h> 44#include <sys/mbuf.h> 45#include <sys/sysctl.h> 46 47#include <errno.h> 48#include <stdlib.h> 49#include <string.h> 50#include <paths.h> 51 52#include "systat.h" 53#include "extern.h" 54 55static struct mbpstat **mbpstat; 56static struct mbstat *mbstat; 57static int num_objs; 58static long *m_mbtypes; 59static short nmbtypes; 60#define GENLST (num_objs - 1) 61 62static struct mtnames { 63 short mt_type; 64 const char *mt_name; 65} mtnames[] = { 66 { MT_DATA, "data"}, 67 { MT_HEADER, "headers"}, 68 { MT_SONAME, "socknames"}, 69 { MT_FTABLE, "frags"}, 70 { MT_CONTROL, "control"}, 71 { MT_OOBDATA, "oobdata"} 72}; 73#define NNAMES (sizeof (mtnames) / sizeof (mtnames[0])) 74 75WINDOW * 76openmbufs() 77{ 78 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 79} 80 81void 82closembufs(w) 83 WINDOW *w; 84{ 85 if (w == NULL) 86 return; 87 wclear(w); 88 wrefresh(w); 89 delwin(w); 90} 91 92void 93labelmbufs() 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 100void 101showmbufs() 102{ 103 int i, j, max, idx; 104 u_long totfree; 105 char buf[10]; 106 const char *mtname; 107 108 totfree = mbpstat[GENLST]->mb_mbfree; 109 for (i = 1; i < nmbtypes; i++) 110 m_mbtypes[i] += mbpstat[GENLST]->mb_mbtypes[i]; 111 for (i = 0; i < GENLST; i++) { 112 if (mbpstat[i]->mb_active == 0) 113 continue; 114 totfree += mbpstat[i]->mb_mbfree; 115 for (j = 1; j < nmbtypes; j++) 116 m_mbtypes[j] += mbpstat[i]->mb_mbtypes[j]; 117 } 118 119 /* 120 * Print totals for different mbuf types. 121 */ 122 for (j = 0; j < wnd->_maxy; j++) { 123 max = 0, idx = -1; 124 for (i = 0; i < wnd->_maxy; i++) { 125 if (i == MT_NOTMBUF) 126 continue; 127 if (i >= nmbtypes) 128 break; 129 if (m_mbtypes[i] > max) { 130 max = m_mbtypes[i]; 131 idx = i; 132 } 133 } 134 if (max == 0) 135 break; 136 137 mtname = NULL; 138 for (i = 0; i < (int)NNAMES; i++) 139 if (mtnames[i].mt_type == idx) 140 mtname = mtnames[i].mt_name; 141 if (mtname == NULL) 142 mvwprintw(wnd, 1+j, 0, "%10d", idx); 143 else 144 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtname); 145 wmove(wnd, 1 + j, 10); 146 if (max > 60) { 147 snprintf(buf, sizeof(buf), " %d", max); 148 max = 60; 149 while (max--) 150 waddch(wnd, 'X'); 151 waddstr(wnd, buf); 152 } else 153 while (max--) 154 waddch(wnd, 'X'); 155 wclrtoeol(wnd); 156 m_mbtypes[idx] = 0; 157 } 158 159 /* 160 * Print total number of free mbufs. 161 */ 162 if (totfree > 0) { 163 mvwprintw(wnd, 1+j, 0, "%-10.10s", "free"); 164 if (totfree > 60) { 165 snprintf(buf, sizeof(buf), " %lu", totfree); 166 totfree = 60; 167 while(totfree--) 168 waddch(wnd, 'X'); 169 waddstr(wnd, buf); 170 } else { 171 while(totfree--) 172 waddch(wnd, 'X'); 173 } 174 wclrtoeol(wnd); 175 j++; 176 } 177 wmove(wnd, 1+j, 0); wclrtobot(wnd); 178} 179 180int 181initmbufs() 182{ 183 int i; 184 size_t len; 185 186 len = sizeof *mbstat; 187 if ((mbstat = malloc(len)) == NULL) { 188 error("malloc mbstat failed"); 189 return 0; 190 } 191 if (sysctlbyname("kern.ipc.mbstat", mbstat, &len, NULL, 0) < 0) { 192 error("sysctl retrieving mbstat"); 193 return 0; 194 } 195 nmbtypes = mbstat->m_numtypes; 196 if ((m_mbtypes = calloc(nmbtypes, sizeof(long *))) == NULL) { 197 error("calloc m_mbtypes failed"); 198 return 0; 199 } 200 201 if (sysctlbyname("kern.ipc.mb_statpcpu", NULL, &len, NULL, 0) < 0) { 202 error("sysctl getting mbpstat total size failed"); 203 return 0; 204 } 205 num_objs = (int)(len / sizeof(struct mbpstat)); 206 if ((mbpstat = calloc(num_objs, sizeof(struct mbpstat *))) == NULL) { 207 error("calloc mbpstat pointers failed"); 208 return 0; 209 } 210 if ((mbpstat[0] = calloc(num_objs, sizeof(struct mbpstat))) == NULL) { 211 error("calloc mbpstat structures failed"); 212 return 0; 213 } 214 215 for (i = 0; i < num_objs; i++) 216 mbpstat[i] = mbpstat[0] + i; 217 218 return 1; 219} 220 221void 222fetchmbufs() 223{ 224 size_t len; 225 226 len = num_objs * sizeof(struct mbpstat); 227 if (sysctlbyname("kern.ipc.mb_statpcpu", mbpstat[0], &len, NULL, 0) < 0) 228 printw("sysctl: mbpstat: %s", strerror(errno)); 229} 230