[#node-BlockfileCursor]
= xref:node.adoc[node]::BlockfileCursor
:relfileprefix: ../
:mrdocs:

Tracks the current block file and how far its undo data has been written.

== Synopsis

Declared in `<node/blockstorage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct BlockfileCursor;
----

== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:node/BlockfileCursor/file_num.adoc[`file_num`] 
| The latest blockfile number.
| xref:node/BlockfileCursor/undo_height.adoc[`undo_height`] 
| Height of the highest block in file_num whose undo data has been written.
|===



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