doc: IsSnapshotActive

src/validation.h

@@ -919,6 +919,8 @@ public:
         return m_blockman.m_block_index;
     }
 
+    //! @returns true if a snapshot-based chainstate is in use. Also implies
+    //!          that a background validation chainstate is also in use.
     bool IsSnapshotActive() const;
 
     std::optional<uint256> SnapshotBlockhash() const;