Function dir_from_offset

src/traffic_cache_tool/CacheDefs.h:400–411

#define dir_in_seg(_s, _i) ((CacheDirEntry *)(((char *)(_s)) + (SIZEOF_DIR * (_i))))

inline CacheDirEntry *
dir_from_offset(int64_t i, CacheDirEntry *seg)
{
#if DIR_DEPTH < 5
  if (!i)
    return nullptr;
  return dir_in_seg(seg, i);
#else
  i = i + ((i - 1) / (DIR_DEPTH - 1));
  return dir_in_seg(seg, i);
#endif
}

inline CacheDirEntry *
dir_bucket(int64_t b, CacheDirEntry *seg)