1 files changed, 7 insertions, 0 deletions
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 4334ebde6d..c3da69c3f0 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -1137,3 +1137,10 @@ void CTxMemPool::TrimToSize(size_t sizelimit, std::vector<uint256>* pvNoSpendsRe
     if (maxFeeRateRemoved > CFeeRate(0))
         LogPrint("mempool", "Removed %u txn, rolling minimum fee bumped to %s\n", nTxnRemoved, maxFeeRateRemoved.ToString());
 }
+
+bool CTxMemPool::TransactionWithinChainLimit(const uint256& txid, size_t chainLimit) const {
+    LOCK(cs);
+    auto it = mapTx.find(txid);
+    return it == mapTx.end() || (it->GetCountWithAncestors() < chainLimit &&
+       it->GetCountWithDescendants() < chainLimit);
+}