throughput.c revision 64670
1/*- 2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org> 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/usr.sbin/ppp/throughput.c 64670 2000-08-15 10:25:42Z brian $ 27 */ 28 29#include <sys/types.h> 30 31#include <stdio.h> 32#include <stdlib.h> 33#include <string.h> 34#include <termios.h> 35#include <time.h> 36 37#include "log.h" 38#include "timer.h" 39#include "throughput.h" 40#include "descriptor.h" 41#include "prompt.h" 42 43 44void 45throughput_init(struct pppThroughput *t, int period) 46{ 47 t->OctetsIn = t->OctetsOut = 0; 48 t->SamplePeriod = period; 49 t->in.SampleOctets = (long long *) 50 calloc(period, sizeof *t->in.SampleOctets); 51 t->in.OctetsPerSecond = 0; 52 t->out.SampleOctets = (long long *) 53 calloc(period, sizeof *t->out.SampleOctets); 54 t->out.OctetsPerSecond = 0; 55 t->BestOctetsPerSecond = 0; 56 t->nSample = 0; 57 time(&t->BestOctetsPerSecondTime); 58 memset(&t->Timer, '\0', sizeof t->Timer); 59 t->Timer.name = "throughput"; 60 t->uptime = 0; 61 t->downtime = 0; 62 t->rolling = 0; 63 t->callback.data = NULL; 64 t->callback.fn = NULL; 65 throughput_stop(t); 66} 67 68void 69throughput_destroy(struct pppThroughput *t) 70{ 71 if (t && t->in.SampleOctets) { 72 throughput_stop(t); 73 free(t->in.SampleOctets); 74 free(t->out.SampleOctets); 75 t->in.SampleOctets = NULL; 76 t->out.SampleOctets = NULL; 77 } 78} 79 80int 81throughput_uptime(struct pppThroughput *t) 82{ 83 time_t downat; 84 85 downat = t->downtime ? t->downtime : time(NULL); 86 if (t->uptime && downat < t->uptime) { 87 /* Euch ! The clock's gone back ! */ 88 int i; 89 90 for (i = 0; i < t->SamplePeriod; i++) 91 t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0; 92 t->nSample = 0; 93 t->uptime = downat; 94 } 95 return t->uptime ? downat - t->uptime : 0; 96} 97 98void 99throughput_disp(struct pppThroughput *t, struct prompt *prompt) 100{ 101 int secs_up, divisor; 102 103 secs_up = throughput_uptime(t); 104 prompt_Printf(prompt, "Connect time: %d:%02d:%02d", secs_up / 3600, 105 (secs_up / 60) % 60, secs_up % 60); 106 if (t->downtime) 107 prompt_Printf(prompt, " - down at %s", ctime(&t->downtime)); 108 else 109 prompt_Printf(prompt, "\n"); 110 111 divisor = secs_up ? secs_up : 1; 112 prompt_Printf(prompt, "%llu octets in, %llu octets out\n", 113 t->OctetsIn, t->OctetsOut); 114 if (t->rolling) { 115 prompt_Printf(prompt, " overall %6qu bytes/sec\n", 116 (t->OctetsIn + t->OctetsOut) / divisor); 117 prompt_Printf(prompt, " %s %6qu bytes/sec in, %6qu bytes/sec out " 118 "(over the last %d secs)\n", 119 t->downtime ? "average " : "currently", 120 t->in.OctetsPerSecond, t->out.OctetsPerSecond, 121 secs_up > t->SamplePeriod ? t->SamplePeriod : secs_up); 122 prompt_Printf(prompt, " peak %6qu bytes/sec on %s", 123 t->BestOctetsPerSecond, ctime(&t->BestOctetsPerSecondTime)); 124 } else 125 prompt_Printf(prompt, "Overall %llu bytes/sec\n", 126 (t->OctetsIn + t->OctetsOut) / divisor); 127} 128 129 130void 131throughput_log(struct pppThroughput *t, int level, const char *title) 132{ 133 if (t->uptime) { 134 int secs_up; 135 136 secs_up = throughput_uptime(t); 137 if (title == NULL) 138 title = ""; 139 log_Printf(level, "%s%sConnect time: %d secs: %llu octets in, %llu octets" 140 " out\n", title, *title ? ": " : "", secs_up, t->OctetsIn, 141 t->OctetsOut); 142 if (secs_up == 0) 143 secs_up = 1; 144 if (t->rolling) 145 log_Printf(level, " total %llu bytes/sec, peak %llu bytes/sec on %s", 146 (t->OctetsIn + t->OctetsOut) / secs_up, t->BestOctetsPerSecond, 147 ctime(&t->BestOctetsPerSecondTime)); 148 else 149 log_Printf(level, " total %llu bytes/sec\n", 150 (t->OctetsIn + t->OctetsOut) / secs_up); 151 } 152} 153 154static void 155throughput_sampler(void *v) 156{ 157 struct pppThroughput *t = (struct pppThroughput *)v; 158 unsigned long long old; 159 int uptime, divisor; 160 unsigned long long octets; 161 162 timer_Stop(&t->Timer); 163 164 uptime = throughput_uptime(t); 165 divisor = uptime < t->SamplePeriod ? uptime + 1 : t->SamplePeriod; 166 167 old = t->in.SampleOctets[t->nSample]; 168 t->in.SampleOctets[t->nSample] = t->OctetsIn; 169 t->in.OctetsPerSecond = (t->in.SampleOctets[t->nSample] - old) / divisor; 170 171 old = t->out.SampleOctets[t->nSample]; 172 t->out.SampleOctets[t->nSample] = t->OctetsOut; 173 t->out.OctetsPerSecond = (t->out.SampleOctets[t->nSample] - old) / divisor; 174 175 octets = t->in.OctetsPerSecond + t->out.OctetsPerSecond; 176 if (t->BestOctetsPerSecond < octets) { 177 t->BestOctetsPerSecond = octets; 178 time(&t->BestOctetsPerSecondTime); 179 } 180 181 if (++t->nSample == t->SamplePeriod) 182 t->nSample = 0; 183 184 if (t->callback.fn != NULL && uptime >= t->SamplePeriod) 185 (*t->callback.fn)(t->callback.data); 186 187 timer_Start(&t->Timer); 188} 189 190void 191throughput_start(struct pppThroughput *t, const char *name, int rolling) 192{ 193 int i; 194 timer_Stop(&t->Timer); 195 196 for (i = 0; i < t->SamplePeriod; i++) 197 t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0; 198 t->nSample = 0; 199 t->OctetsIn = t->OctetsOut = 0; 200 t->in.OctetsPerSecond = t->out.OctetsPerSecond = t->BestOctetsPerSecond = 0; 201 time(&t->BestOctetsPerSecondTime); 202 t->downtime = 0; 203 time(&t->uptime); 204 throughput_restart(t, name, rolling); 205} 206 207void 208throughput_restart(struct pppThroughput *t, const char *name, int rolling) 209{ 210 timer_Stop(&t->Timer); 211 t->rolling = rolling ? 1 : 0; 212 if (t->rolling) { 213 t->Timer.load = SECTICKS; 214 t->Timer.func = throughput_sampler; 215 t->Timer.name = name; 216 t->Timer.arg = t; 217 timer_Start(&t->Timer); 218 } else { 219 t->Timer.load = 0; 220 t->Timer.func = NULL; 221 t->Timer.name = NULL; 222 t->Timer.arg = NULL; 223 } 224} 225 226void 227throughput_stop(struct pppThroughput *t) 228{ 229 if (t->Timer.state != TIMER_STOPPED) 230 time(&t->downtime); 231 timer_Stop(&t->Timer); 232} 233 234void 235throughput_addin(struct pppThroughput *t, long long n) 236{ 237 t->OctetsIn += n; 238} 239 240void 241throughput_addout(struct pppThroughput *t, long long n) 242{ 243 t->OctetsOut += n; 244} 245 246void 247throughput_clear(struct pppThroughput *t, int clear_type, struct prompt *prompt) 248{ 249 if (clear_type & (THROUGHPUT_OVERALL|THROUGHPUT_CURRENT)) { 250 int i; 251 252 for (i = 0; i < t->SamplePeriod; i++) 253 t->in.SampleOctets[i] = t->out.SampleOctets[i] = 0; 254 t->nSample = 0; 255 } 256 257 if (clear_type & THROUGHPUT_OVERALL) { 258 int divisor; 259 260 if ((divisor = throughput_uptime(t)) == 0) 261 divisor = 1; 262 prompt_Printf(prompt, "overall cleared (was %6qu bytes/sec)\n", 263 (t->OctetsIn + t->OctetsOut) / divisor); 264 t->OctetsIn = t->OctetsOut = 0; 265 t->downtime = 0; 266 time(&t->uptime); 267 } 268 269 if (clear_type & THROUGHPUT_CURRENT) { 270 prompt_Printf(prompt, "current cleared (was %6qu bytes/sec in," 271 " %6qu bytes/sec out)\n", 272 t->in.OctetsPerSecond, t->out.OctetsPerSecond); 273 t->in.OctetsPerSecond = t->out.OctetsPerSecond = 0; 274 } 275 276 if (clear_type & THROUGHPUT_PEAK) { 277 char *time_buf, *last; 278 279 time_buf = ctime(&t->BestOctetsPerSecondTime); 280 last = time_buf + strlen(time_buf); 281 if (last > time_buf && *--last == '\n') 282 *last = '\0'; 283 prompt_Printf(prompt, "peak cleared (was %6qu bytes/sec on %s)\n", 284 t->BestOctetsPerSecond, time_buf); 285 t->BestOctetsPerSecond = 0; 286 time(&t->BestOctetsPerSecondTime); 287 } 288} 289 290void 291throughput_callback(struct pppThroughput *t, void (*fn)(void *), void *data) 292{ 293 t->callback.fn = fn; 294 t->callback.data = data; 295} 296