> For the complete documentation index, see [llms.txt](https://kelby.gitbook.io/monero/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kelby.gitbook.io/monero/wang-luo-chuan-shu/blockqueue.md). # block\_queue ``` struct span { uint64_t start_block_height; std::vector hashes; std::vector blocks; boost::uuids::uuid connection_id; uint64_t nblocks; float rate; size_t size; boost::posix_time::ptime time; }; typedef std::set block_map; ``` ``` block_map blocks; ``` add\_blocks flush\_spans flush\_stale\_spans remove\_span remove\_spans get\_max\_block\_height print get\_overview reserve\_span is\_blockchain\_placeholder get\_start\_gap\_span get\_next\_span\_if\_scheduled set\_span\_hashes get\_next\_span has\_next\_span get\_data\_size get\_num\_filled\_spans\_prefix get\_num\_filled\_spans get\_last\_known\_hash has\_spans get\_speed foreach requested