throughput.c revision 36285 
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 *	$Id: throughput.c,v 1.4.4.9 1998/05/01 19:26:04 brian Exp $
27 */
28
29#include <sys/types.h>
30
31#include <stdio.h>
32#include <string.h>
33#include <termios.h>
34#include <time.h>
35
36#include "log.h"
37#include "timer.h"
38#include "throughput.h"
39#include "descriptor.h"
40#include "prompt.h"
41
42void
43throughput_init(struct pppThroughput *t)
44{
45  int f;
46
47  t->OctetsIn = t->OctetsOut = 0;
48  for (f = 0; f < SAMPLE_PERIOD; f++)
49    t->SampleOctets[f] = 0;
50  t->OctetsPerSecond = t->BestOctetsPerSecond = t->nSample = 0;
51  memset(&t->Timer, '\0', sizeof t->Timer);
52  t->Timer.name = "throughput";
53  t->uptime = 0;
54  t->rolling = 0;
55  throughput_stop(t);
56}
57
58void
59throughput_disp(struct pppThroughput *t, struct prompt *prompt)
60{
61  int secs_up;
62
63  secs_up = t->uptime ? time(NULL) - t->uptime : 0;
64  prompt_Printf(prompt, "Connect time: %d secs\n", secs_up);
65  if (secs_up == 0)
66    secs_up = 1;
67  prompt_Printf(prompt, "%ld octets in, %ld octets out\n",
68                t->OctetsIn, t->OctetsOut);
69  if (t->rolling) {
70    prompt_Printf(prompt, "  overall   %5ld bytes/sec\n",
71                  (t->OctetsIn+t->OctetsOut)/secs_up);
72    prompt_Printf(prompt, "  currently %5d bytes/sec\n", t->OctetsPerSecond);
73    prompt_Printf(prompt, "  peak      %5d bytes/sec\n",
74                  t->BestOctetsPerSecond);
75  } else
76    prompt_Printf(prompt, "Overall %ld bytes/sec\n",
77                  (t->OctetsIn+t->OctetsOut)/secs_up);
78}
79
80
81void
82throughput_log(struct pppThroughput *t, int level, const char *title)
83{
84  if (t->uptime) {
85    int secs_up;
86
87    secs_up = t->uptime ? time(NULL) - t->uptime : 0;
88    if (title)
89      log_Printf(level, "%s: Connect time: %d secs: %ld octets in, %ld octets"
90                " out\n", title, secs_up, t->OctetsIn, t->OctetsOut);
91    else
92      log_Printf(level, "Connect time: %d secs: %ld octets in, %ld octets out\n",
93                secs_up, t->OctetsIn, t->OctetsOut);
94    if (secs_up == 0)
95      secs_up = 1;
96    if (t->rolling)
97      log_Printf(level, " total %ld bytes/sec, peak %d bytes/sec\n",
98                (t->OctetsIn+t->OctetsOut)/secs_up, t->BestOctetsPerSecond);
99    else
100      log_Printf(level, " total %ld bytes/sec\n",
101                (t->OctetsIn+t->OctetsOut)/secs_up);
102  }
103}
104
105static void
106throughput_sampler(void *v)
107{
108  struct pppThroughput *t = (struct pppThroughput *)v;
109  u_long old;
110
111  timer_Stop(&t->Timer);
112
113  old = t->SampleOctets[t->nSample];
114  t->SampleOctets[t->nSample] = t->OctetsIn + t->OctetsOut;
115  t->OctetsPerSecond = (t->SampleOctets[t->nSample] - old) / SAMPLE_PERIOD;
116  if (t->BestOctetsPerSecond < t->OctetsPerSecond)
117    t->BestOctetsPerSecond = t->OctetsPerSecond;
118  if (++t->nSample == SAMPLE_PERIOD)
119    t->nSample = 0;
120
121  timer_Start(&t->Timer);
122}
123
124void
125throughput_start(struct pppThroughput *t, const char *name, int rolling)
126{
127  timer_Stop(&t->Timer);
128  throughput_init(t);
129  t->rolling = rolling ? 1 : 0;
130  time(&t->uptime);
131  if (t->rolling) {
132    t->Timer.load = SECTICKS;
133    t->Timer.func = throughput_sampler;
134    t->Timer.name = name;
135    t->Timer.arg = t;
136    timer_Start(&t->Timer);
137  }
138}
139
140void
141throughput_stop(struct pppThroughput *t)
142{
143  timer_Stop(&t->Timer);
144}
145
146void
147throughput_addin(struct pppThroughput *t, int n)
148{
149  t->OctetsIn += n;
150}
151
152void
153throughput_addout(struct pppThroughput *t, int n)
154{
155  t->OctetsOut += n;
156}
157