[#CTxMemPool-CalculateDescendantData]
= xref:CTxMemPool.adoc[CTxMemPool]::CalculateDescendantData
:relfileprefix: ../
:mrdocs:

Compute the count, aggregate size, and aggregate fee of an entry's in‐mempool descendants.

== Synopsis

Declared in `<txmempool.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7f95135d1868), requires_capability(0x7f9501b10c48), requires_capability(0x7f950ec76e38), requires_capability(0x7f9525ea6b88), requires_capability(0x7f95150962c8), requires_capability(0x7f950826a568), requires_capability(0x7f94f856dc78), requires_capability(0x7f9513c57e68)]]
std::tuple<size_t, size_t, CAmount>
CalculateDescendantData(xref:CTxMemPoolEntry.adoc[CTxMemPoolEntry] const& entry) const;
----

== Return Value

A tuple of descendant count, descendant size, and descendant fees.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *entry*
| The entry whose descendant data is computed.
|===


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