Merge bitcoin#29260: refactor: remove CTxMemPool::queryHashes()

282b12d refactor: remove CTxMemPool::queryHashes() (stickies-v)

Pull request description:

  `CTxMemPool::queryHashes()` is only used in `MempoolToJSON()`, where it can just as easily be replaced with the more general `CTxMemPool::entryAll()`. No behaviour change, just cleans up the code.

ACKs for top commit:
  dergoegge:
    Code review ACK 282b12d
  TheCharlatan:
    ACK 282b12d
  glozow:
    ACK 282b12d. Looks like there's no conflicts.

Tree-SHA512: 16160dec8e1f2457fa0f62dc96d2d2efd92c4bab810ecdb0e08918b8e85a667702c8e41421eeb4ea6abe92a5956a2a39a7a6368514973b78be0d22de2ad299b2

src/rpc/mempool.cpp

@@ -353,17 +353,15 @@ UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose, bool include_mempoo
         }
         return o;
     } else {
+        UniValue a(UniValue::VARR);
         uint64_t mempool_sequence;
-        std::vector<uint256> vtxid;
         {
             LOCK(pool.cs);
-            pool.queryHashes(vtxid);
+            for (const CTxMemPoolEntry& e : pool.entryAll()) {
+                a.push_back(e.GetTx().GetHash().ToString());
+            }
             mempool_sequence = pool.GetSequence();
         }
-        UniValue a(UniValue::VARR);
-        for (const uint256& hash : vtxid)
-            a.push_back(hash.ToString());
-
         if (!include_mempool_sequence) {
             return a;
         } else {

src/test/fuzz/tx_pool.cpp

@@ -101,9 +101,7 @@ void Finish(FuzzedDataProvider& fuzzed_data_provider, MockedTxPool& tx_pool, Cha
     if (!info_all.empty()) {
         const auto& tx_to_remove = *PickValue(fuzzed_data_provider, info_all).tx;
         WITH_LOCK(tx_pool.cs, tx_pool.removeRecursive(tx_to_remove, MemPoolRemovalReason::BLOCK /* dummy */));
-        std::vector<uint256> all_txids;
-        tx_pool.queryHashes(all_txids);
-        assert(all_txids.size() < info_all.size());
+        assert(tx_pool.size() < info_all.size());
         WITH_LOCK(::cs_main, tx_pool.check(chainstate.CoinsTip(), chainstate.m_chain.Height() + 1));
     }
     SyncWithValidationInterfaceQueue();

src/txmempool.cpp

@@ -803,19 +803,6 @@ std::vector<CTxMemPool::indexed_transaction_set::const_iterator> CTxMemPool::Get
     return iters;
 }
 
-void CTxMemPool::queryHashes(std::vector<uint256>& vtxid) const
-{
-    LOCK(cs);
-    auto iters = GetSortedDepthAndScore();
-
-    vtxid.clear();
-    vtxid.reserve(mapTx.size());
-
-    for (auto it : iters) {
-        vtxid.push_back(it->GetTx().GetHash());
-    }
-}
-
 static TxMempoolInfo GetInfo(CTxMemPool::indexed_transaction_set::const_iterator it) {
     return TxMempoolInfo{it->GetSharedTx(), it->GetTime(), it->GetFee(), it->GetTxSize(), it->GetModifiedFee() - it->GetFee()};
 }

src/txmempool.h

@@ -485,7 +485,6 @@ class CTxMemPool
     void removeForBlock(const std::vector<CTransactionRef>& vtx, unsigned int nBlockHeight) EXCLUSIVE_LOCKS_REQUIRED(cs);
 
     bool CompareDepthAndScore(const uint256& hasha, const uint256& hashb, bool wtxid=false);
-    void queryHashes(std::vector<uint256>& vtxid) const;
     bool isSpent(const COutPoint& outpoint) const;
     unsigned int GetTransactionsUpdated() const;
     void AddTransactionsUpdated(unsigned int n);