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 * @(#)mbufs.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.bin/systat/mbufs.c,v 1.10.2.1 2000/08/26 09:36:55 ps Exp $ 35 */ 36 37 #define _KERNEL_STRUCTURES 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/mbuf.h> 41 #include <sys/sysctl.h> 42 43 #include <errno.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <paths.h> 47 #include "systat.h" 48 #include "extern.h" 49 50 static struct mbstat *mb; 51 static u_long *m_mbtypes; 52 static int nmbtypes; 53 54 static struct mtnames { 55 int mt_type; 56 const char *mt_name; 57 } mtnames[] = { 58 { MT_DATA, "data"}, 59 { MT_HEADER, "headers"}, 60 { MT_SONAME, "socknames"}, 61 { MT_CONTROL, "control"}, 62 { MT_OOBDATA, "oobdata"} 63 }; 64 65 #define NNAMES (sizeof (mtnames) / sizeof (mtnames[0])) 66 67 WINDOW * 68 openmbufs(void) 69 { 70 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 71 } 72 73 void 74 closembufs(WINDOW *w) 75 { 76 if (w == NULL) 77 return; 78 wclear(w); 79 wrefresh(w); 80 delwin(w); 81 } 82 83 void 84 labelmbufs(void) 85 { 86 wmove(wnd, 0, 0); wclrtoeol(wnd); 87 mvwaddstr(wnd, 0, 10, 88 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60"); 89 } 90 91 void 92 showmbufs(void) 93 { 94 int i, j, idx; 95 u_long max; 96 char buf[10]; 97 const char *mtname; 98 99 if (mb == NULL) 100 return; 101 for (j = 0; j < wnd->_maxy; j++) { 102 max = 0, idx = -1; 103 for (i = 0; i < wnd->_maxy; i++) { 104 if (i == MT_FREE) 105 continue; 106 if (i >= nmbtypes) 107 break; 108 if (m_mbtypes[i] > max) { 109 max = m_mbtypes[i]; 110 idx = i; 111 } 112 } 113 if (max == 0) 114 break; 115 116 mtname = NULL; 117 for (i = 0; i < (int)NNAMES; i++) 118 if (mtnames[i].mt_type == idx) 119 mtname = mtnames[i].mt_name; 120 if (mtname == NULL) 121 mvwprintw(wnd, 1+j, 0, "%10d", idx); 122 else 123 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtname); 124 wmove(wnd, 1 + j, 10); 125 if (max > 60) { 126 snprintf(buf, sizeof(buf), " %lu", max); 127 max = 60; 128 while (max--) 129 waddch(wnd, 'X'); 130 waddstr(wnd, buf); 131 } else 132 while (max--) 133 waddch(wnd, 'X'); 134 wclrtoeol(wnd); 135 mb->m_mbufs -= m_mbtypes[idx]; 136 m_mbtypes[idx] = 0; 137 } 138 if (mb->m_mbufs) { 139 mvwprintw(wnd, 1+j, 0, "%-10.10s", "free"); 140 if (mb->m_mbufs > 60) { 141 snprintf(buf, sizeof(buf), " %ld", mb->m_mbufs); 142 mb->m_mbufs = 60; 143 while (mb->m_mbufs--) 144 waddch(wnd, 'X'); 145 waddstr(wnd, buf); 146 } else { 147 while(mb->m_mbufs--) 148 waddch(wnd, 'X'); 149 } 150 wclrtoeol(wnd); 151 j++; 152 } 153 wmove(wnd, 1+j, 0); wclrtobot(wnd); 154 } 155 156 int 157 initmbufs(void) 158 { 159 size_t len, mbtypeslen; 160 161 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) { 162 error("sysctl getting mbtypes size failed"); 163 return 0; 164 } 165 if ((m_mbtypes = calloc(1, mbtypeslen)) == NULL) { 166 error("calloc mbtypes failed"); 167 return 0; 168 } 169 nmbtypes = mbtypeslen / sizeof(*m_mbtypes); 170 171 len = 0; 172 if (sysctlbyname("kern.ipc.mbstat", 0, &len, 0, 0) < 0) { 173 error("sysctl getting mbstat size failed"); 174 return 0; 175 } 176 177 if (mb == NULL) 178 mb = (struct mbstat *)calloc(1, sizeof *mb); 179 return 1; 180 } 181 182 void 183 fetchmbufs(void) 184 { 185 size_t len; 186 187 len = sizeof *mb; 188 if (sysctlbyname("kern.ipc.mbstat", mb, &len, 0, 0) < 0) 189 printw("sysctl: mbstat: %s", strerror(errno)); 190 191 len = nmbtypes * sizeof *m_mbtypes; 192 if (sysctlbyname("kern.ipc.mbtypes", m_mbtypes, &len, 0, 0) < 0) 193 printw("sysctl: mbtypes: %s", strerror(errno)); 194 } 195