1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <fcntl.h> 4 #include <string.h> 5 #include <unistd.h> 6 #include <errno.h> 7 8 int main(int argc, char *argv[]) 9 { 10 double this_time, last_time; 11 char line[256], last_line[256], *p; 12 int major, minor, cpu, nr, alias; 13 long MAX_CPUS; 14 unsigned long long total_entries; 15 unsigned int *last_seq; 16 unsigned int seq; 17 FILE *f; 18 19 #ifdef _SC_NPROCESSORS_ONLN 20 MAX_CPUS = sysconf(_SC_NPROCESSORS_ONLN); 21 if (MAX_CPUS < 1) 22 { 23 fprintf(stderr, "Could not determine number of CPUs online:\n%s\n", 24 strerror (errno)); 25 fprintf(stderr, "Assuming 1024\n"); 26 MAX_CPUS = 1024; 27 } 28 #else 29 MAX_CPUS = CPU_SETSIZE; 30 #endif 31 32 last_seq = malloc( sizeof(unsigned int) * MAX_CPUS ); 33 for (nr = 0; nr < MAX_CPUS; nr++) 34 last_seq[nr] = -1; 35 36 if (argc < 2) { 37 fprintf(stderr, "%s: file\n", argv[0]); 38 return 1; 39 } 40 41 f = fopen(argv[1], "r"); 42 if (!f) { 43 perror("fopen"); 44 return 1; 45 } 46 47 last_time = 0; 48 alias = nr = 0; 49 total_entries = 0; 50 while ((p = fgets(line, sizeof(line), f)) != NULL) { 51 if (sscanf(p, "%3d,%3d %5d %8d %lf", &major, &minor, &cpu, &seq, &this_time) != 5) 52 break; 53 54 if (this_time < last_time) { 55 fprintf(stdout, "last: %s", last_line); 56 fprintf(stdout, "this: %s", p); 57 nr++; 58 } 59 60 last_time = this_time; 61 62 if (cpu >= MAX_CPUS) { 63 fprintf(stderr, "cpu%d too large\n", cpu); 64 break; 65 } 66 67 if (last_seq[cpu] == seq) { 68 fprintf(stdout, "alias on sequence %u\n", seq); 69 alias++; 70 } 71 72 last_seq[cpu] = seq; 73 total_entries++; 74 strcpy(last_line, line); 75 } 76 77 fprintf(stdout, "Events %Lu: %d unordered, %d aliases\n", total_entries, nr, alias); 78 fclose(f); 79 80 return nr != 0; 81 } 82
