source: examples/event/rate.c @ 57bbf89

4.0.1-hotfixescachetimestampsdevelopdpdk-ndagetsilivegetfragoffhelplibtrace4ndag_formatpfringrc-4.0.1rc-4.0.2rc-4.0.3rc-4.0.4ringdecrementfixringperformanceringtimestampfixes
Last change on this file since 57bbf89 was e81d1af, checked in by Daniel Lawson <dlawson@…>, 16 years ago

s/stdint.h/inttypes.h/

  • Property mode set to 100644
File size: 5.0 KB
Line 
1/*
2 * This file is part of libtrace
3 *
4 * Copyright (c) 2004 The University of Waikato, Hamilton, New Zealand.
5 * Authors: Daniel Lawson
6 *          Perry Lorier
7 *         
8 * All rights reserved.
9 *
10 * This code has been developed by the University of Waikato WAND
11 * research group. For further information please see http://www.wand.net.nz/
12 *
13 * libtrace is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * libtrace is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with libtrace; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
26 *
27 * $Id$
28 *
29 */
30
31#include <stdio.h>
32#include <stdlib.h>
33#include <assert.h>
34#include <string.h>
35#include <sys/types.h>
36#include <netinet/in.h>
37#include <netinet/in_systm.h>
38#include <netinet/ip.h>
39#include <signal.h>
40#include <setjmp.h>
41#include <unistd.h>
42#include <sys/time.h>
43#include <inttypes.h>
44#include "libtrace.h"
45#include "dagformat.h"
46
47struct libtrace_t *trace;
48
49#define SCANSIZE 4096
50
51#define ALPHA 0.9
52
53char *buffer[SCANSIZE];
54
55static int docalc = 0;
56
57typedef enum counter_type {
58        BYTES = 0,
59        PACKETS = 1
60} counter_type_t;
61
62typedef enum counter_frame {
63        INSTANT = 0,
64        SMOOTHED = 1
65} counter_frame_t;
66
67#define MAXCOUNTERTYPE (PACKETS + 1)
68#define MAXCOUNTERFRAME (SMOOTHED + 1)
69
70int32_t counter[MAXCOUNTERTYPE][MAXCOUNTERFRAME];
71
72int32_t event_read_packet(struct libtrace_t *trace, struct libtrace_packet_t *packet);
73
74struct timeval current,last,diff,total;
75
76void alarmsig(int sig) {
77        docalc++;
78}
79
80void secondreport() {
81
82        static int hdrcount = 10;
83
84        if (hdrcount >= 10) {
85                printf("Byte count: smoothed[instant]       Packet count: smoothed[instant]\n");
86                hdrcount = 0;
87        }
88        hdrcount++;
89        counter[BYTES][SMOOTHED] = ALPHA * counter[BYTES][SMOOTHED] + (1 - ALPHA) * counter[BYTES][INSTANT];
90        counter[PACKETS][SMOOTHED] = ALPHA * counter[PACKETS][SMOOTHED] + (1 - ALPHA) * counter[PACKETS][INSTANT];
91
92        printf("\t\t%d[%d]\t\t\t%d[%d] \n", 
93                        counter[BYTES][SMOOTHED], 
94                        counter[BYTES][INSTANT],
95                        counter[PACKETS][SMOOTHED],
96                        counter[PACKETS][INSTANT]);
97        counter[BYTES][INSTANT] = 0;
98        counter[PACKETS][INSTANT] = 0;
99        docalc=0;
100}
101int main(int argc, char *argv[]) {
102
103        char *uri = 0;
104        int psize = 0;
105        struct sigaction sigact;
106        struct libtrace_ip *ipptr = 0;
107        struct libtrace_packet_t packet;
108
109        struct itimerval itv;
110
111        /*
112         * Set up a timer to expire every second, for reporting
113         */
114        sigact.sa_handler = alarmsig;
115        sigact.sa_flags = SA_RESTART;
116        if(sigaction(SIGALRM, &sigact, NULL) < 0)
117                perror("sigaction");
118        itv.it_interval.tv_sec = 1;
119        itv.it_interval.tv_usec = 0;
120        itv.it_value.tv_sec = 1;
121        itv.it_value.tv_usec = 0;
122        if (setitimer(ITIMER_REAL, &itv, NULL) < 0)
123                perror("setitimer");
124
125        if (argc == 2) {
126                uri = strdup(argv[1]);
127        }
128
129        // create an trace to uri
130        trace = trace_create(uri);
131
132        if(!trace) {
133                fprintf(stderr,"Bad trace, check your input uri (%s)\n",uri);
134                exit(0);
135        }
136
137
138        for (;;) {
139                if ((psize = event_read_packet(trace,&packet)) < 0) {
140                        break;
141                }
142                if (psize == 0) {
143                        continue;
144                }
145
146                if((ipptr = trace_get_ip(&packet)) == 0) {
147                        continue;
148                }
149               
150                counter[BYTES][INSTANT] += ntohs(ipptr->ip_len);
151                counter[PACKETS][INSTANT] ++;
152
153                if(docalc) {
154                        secondreport();
155                }
156
157
158        }
159
160        trace_destroy(trace);
161        return 0;
162}
163
164
165int32_t event_read_packet(struct libtrace_t *trace, struct libtrace_packet_t *packet) {
166        struct libtrace_eventobj_t obj;
167        struct timeval etv;
168        int32_t sleepusec = 0;
169        fd_set rfds;
170
171        FD_ZERO(&rfds);
172
173        for (;;) {
174                obj = trace_event(trace,packet);
175                if (obj.size <= 0) {
176                        return obj.size;
177                }
178                if (obj.type == TRACE_EVENT_IOWAIT) {
179                        // select() on fd
180                        FD_ZERO(&rfds);
181                        FD_SET(obj.fd,&rfds);
182                        select(obj.fd + 1, &rfds,NULL,NULL,0);
183                        continue;
184                } else if (obj.type == TRACE_EVENT_SLEEP) {
185                        // sleep on seconds
186                        // Use select for better precision.
187                        etv.tv_sec = (int) obj.seconds;
188                        etv.tv_usec = (int) ((obj.seconds - etv.tv_sec) * 1000000.0);
189                        select(0,NULL,NULL,NULL,&etv);
190                        continue;
191                } else if (obj.type == TRACE_EVENT_PACKET) {
192                        return packet->size;
193                } else {
194                        fprintf(stderr,"Unknown event type %d\n",obj.type);
195                        return -1;
196                }
197        }
198
199}
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