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 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
