Add GetTransactionAncestry to CTxMemPool for general purpose chain limit checking

2018-03-08 12:15:42 -05:00
parent 46847d69d2
commit 475a385a80
2 changed files with 16 additions and 0 deletions
@@ -1066,6 +1066,16 @@ uint64_t CTxMemPool::CalculateDescendantMaximum(txiter entry) const {
    return top->GetCountWithDescendants();
 }

+void CTxMemPool::GetTransactionAncestry(const uint256& txid, size_t& ancestors, size_t& descendants) const {
+    LOCK(cs);
+    auto it = mapTx.find(txid);
+    ancestors = descendants = 0;
+    if (it != mapTx.end()) {
+        ancestors = it->GetCountWithAncestors();
+        descendants = CalculateDescendantMaximum(it);
+    }
+}
+
 bool CTxMemPool::TransactionWithinChainLimit(const uint256& txid, size_t ancestor_limit, size_t descendant_limit) const {
    LOCK(cs);
    auto it = mapTx.find(txid);