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
main(int argc,char * argv[])9 int 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