hfs-alloc-trace/hfs-alloc-trace.c

   1 //
   2 //  hfs-alloc-trace.c
   3 //  hfs-alloc-trace
   4 //
   5 //  Created by Chris Suter on 8/19/15.
   6 //
   7 //
   8
   9 #include <sys/sysctl.h>
  10 #include <stdlib.h>
  11 #include <err.h>
  12 #include <stdio.h>
  13 #include <stdbool.h>
  14
  15 #include "../core/hfs_alloc_trace.h"
  16
  17 int main(void)
  18 {
  19     size_t sz = 128 * 1024;
  20     struct hfs_alloc_trace_info *info = malloc(sz);
  21
  22     if (sysctlbyname("vfs.generic.hfs.alloc_trace_info", info, &sz,
  23                      NULL, 0)) {
  24         err(1, "sysctlbyname failed");
  25     }
  26
  27     for (int i = 0; i < info->entry_count; ++i) {
  28         printf(" -- 0x%llx:%llu <%llu> --\n", info->entries[i].ptr,
  29                info->entries[i].sequence, info->entries[i].size);
  30         for (int j = 0; j < HFS_ALLOC_BACKTRACE_LEN; ++j)
  31             printf("0x%llx\n", info->entries[i].backtrace[j]);
  32     }
  33
  34     if (info->more)
  35         printf("[skipped]\n");
  36
  37     return 0;
  38 }