blob: 5689f43176af9d1480c8adee6f90343870178ff7 [file] [log] [blame]
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
int main(int argc, char *argv[])
{
double this_time, last_time;
char line[256], last_line[256], *p;
int major, minor, cpu, nr, alias;
long MAX_CPUS;
unsigned long long total_entries;
unsigned int *last_seq;
unsigned int seq;
FILE *f;
#ifdef _SC_NPROCESSORS_CONF
MAX_CPUS = sysconf(_SC_NPROCESSORS_CONF);
if (MAX_CPUS < 1)
{
fprintf(stderr, "Could not determine number of CPUs online:\n%s\n",
strerror (errno));
fprintf(stderr, "Assuming 1024\n");
MAX_CPUS = 1024;
}
#else
MAX_CPUS = CPU_SETSIZE;
#endif
last_seq = malloc( sizeof(unsigned int) * MAX_CPUS );
for (nr = 0; nr < MAX_CPUS; nr++)
last_seq[nr] = -1;
if (argc < 2) {
fprintf(stderr, "%s: file\n", argv[0]);
return 1;
}
f = fopen(argv[1], "r");
if (!f) {
perror("fopen");
return 1;
}
last_time = 0;
alias = nr = 0;
total_entries = 0;
while ((p = fgets(line, sizeof(line), f)) != NULL) {
if (sscanf(p, "%3d,%3d %5d %8d %lf", &major, &minor, &cpu, &seq, &this_time) != 5)
break;
if (this_time < last_time) {
fprintf(stdout, "last: %s", last_line);
fprintf(stdout, "this: %s", p);
nr++;
}
last_time = this_time;
if (cpu >= MAX_CPUS) {
fprintf(stderr, "cpu%d too large\n", cpu);
break;
}
if (last_seq[cpu] == seq) {
fprintf(stdout, "alias on sequence %u\n", seq);
alias++;
}
last_seq[cpu] = seq;
total_entries++;
strcpy(last_line, line);
}
fprintf(stdout, "Events %Lu: %d unordered, %d aliases\n", total_entries, nr, alias);
fclose(f);
return nr != 0;
}