1#include <stdio.h>
2#include <stdlib.h>
3#include <fcntl.h>
4#include <string.h>
5#include <unistd.h>
6
7#define MAX_CPUS	(512)
8
9int main(int argc, char *argv[])
10{
11	double this_time, last_time;
12	char line[256], last_line[256], *p;
13	int major, minor, cpu, nr, alias;
14	unsigned long long total_entries;
15	unsigned int last_seq[MAX_CPUS], seq;
16	FILE *f;
17
18	for (nr = 0; nr < MAX_CPUS; nr++)
19		last_seq[nr] = -1;
20
21	if (argc < 2) {
22		fprintf(stderr, "%s: file\n", argv[0]);
23		return 1;
24	}
25
26	f = fopen(argv[1], "r");
27	if (!f) {
28		perror("fopen");
29		return 1;
30	}
31
32	last_time = 0;
33	alias = nr = 0;
34	total_entries = 0;
35	while ((p = fgets(line, sizeof(line), f)) != NULL) {
36		if (sscanf(p, "%3d,%3d %2d %8d %lf", &major, &minor, &cpu, &seq, &this_time) != 5)
37			break;
38
39		if (this_time < last_time) {
40			fprintf(stdout, "last: %s", last_line);
41			fprintf(stdout, "this: %s", p);
42			nr++;
43		}
44
45		last_time = this_time;
46
47		if (cpu >= MAX_CPUS) {
48			fprintf(stderr, "cpu%d too large\n", cpu);
49			break;
50		}
51
52		if (last_seq[cpu] == seq) {
53			fprintf(stdout, "alias on sequence %u\n", seq);
54			alias++;
55		}
56
57		last_seq[cpu] = seq;
58		total_entries++;
59		strcpy(last_line, line);
60	}
61
62	fprintf(stdout, "Events %Lu: %d unordered, %d aliases\n", total_entries, nr, alias);
63	fclose(f);
64
65	return nr != 0;
66}
67