Function dir_init_segment

src/iocore/cache/CacheDir.cc:219–232

adds all the directory entries in a segment to the segment freelist

// adds all the directory entries
// in a segment to the segment freelist
void
dir_init_segment(int s, Stripe *stripe)
{
  stripe->directory.header->freelist[s] = 0;
  Dir *seg                              = stripe->directory.get_segment(s);
  int  l, b;
  memset(static_cast<void *>(seg), 0, SIZEOF_DIR * DIR_DEPTH * stripe->directory.buckets);
  for (l = 1; l < DIR_DEPTH; l++) {
    for (b = 0; b < stripe->directory.buckets; b++) {
      Dir *bucket = dir_bucket(b, seg);
      dir_free_entry(dir_bucket_row(bucket, l), s, stripe);
    }
  }
}

// break the infinite loop in directory entries
// Note : abuse of the token bit in dir entries