func: static void get_xbzrle_cache_stats(MigrationInfo *info)
  
  {
  
      if (migrate_use_xbzrle()) {
  
          info->has_xbzrle_cache = true;
  
          info->xbzrle_cache = g_malloc0(sizeof(*info->xbzrle_cache));
  
          info->xbzrle_cache->cache_size = migrate_xbzrle_cache_size();
  
          info->xbzrle_cache->bytes = xbzrle_mig_bytes_transferred();
  
          info->xbzrle_cache->pages = xbzrle_mig_pages_transferred();
  
          info->xbzrle_cache->cache_miss = xbzrle_mig_pages_cache_miss();
  
          info->xbzrle_cache->cache_miss_rate = xbzrle_mig_cache_miss_rate();
  
          info->xbzrle_cache->overflow = xbzrle_mig_pages_overflow();
  
      }
  
  }
  