remove internal tracking of mempool conflicts for reporting to wallet

src/test/blockencodings_tests.cpp

@@ -80,9 +80,9 @@ BOOST_AUTO_TEST_CASE(SimpleRoundTripTest)
 
         BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
 
-        std::vector<CTransactionRef> removed;
-        pool.removeRecursive(*block.vtx[2], &removed);
-        BOOST_CHECK_EQUAL(removed.size(), 1);
+        size_t poolSize = pool.size();
+        pool.removeRecursive(*block.vtx[2]);
+        BOOST_CHECK_EQUAL(pool.size(), poolSize - 1);
 
         CBlock block2;
         std::vector<CTransactionRef> vtx_missing;

src/test/mempool_tests.cpp

@@ -55,17 +55,17 @@ BOOST_AUTO_TEST_CASE(MempoolRemoveTest)
 
 
     CTxMemPool testPool(CFeeRate(0));
-    std::vector<CTransactionRef> removed;
 
     // Nothing in pool, remove should do nothing:
-    testPool.removeRecursive(txParent, &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 0);
+    unsigned int poolSize = testPool.size();
+    testPool.removeRecursive(txParent);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize);
 
     // Just the parent:
     testPool.addUnchecked(txParent.GetHash(), entry.FromTx(txParent));
-    testPool.removeRecursive(txParent, &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 1);
-    removed.clear();
+    poolSize = testPool.size();
+    testPool.removeRecursive(txParent);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize - 1);
 
     // Parent, children, grandchildren:
     testPool.addUnchecked(txParent.GetHash(), entry.FromTx(txParent));
@@ -75,19 +75,21 @@ BOOST_AUTO_TEST_CASE(MempoolRemoveTest)
         testPool.addUnchecked(txGrandChild[i].GetHash(), entry.FromTx(txGrandChild[i]));
     }
     // Remove Child[0], GrandChild[0] should be removed:
-    testPool.removeRecursive(txChild[0], &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 2);
-    removed.clear();
+    poolSize = testPool.size();
+    testPool.removeRecursive(txChild[0]);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize - 2);
     // ... make sure grandchild and child are gone:
-    testPool.removeRecursive(txGrandChild[0], &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 0);
-    testPool.removeRecursive(txChild[0], &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 0);
+    poolSize = testPool.size();
+    testPool.removeRecursive(txGrandChild[0]);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize);
+    poolSize = testPool.size();
+    testPool.removeRecursive(txChild[0]);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize);
     // Remove parent, all children/grandchildren should go:
-    testPool.removeRecursive(txParent, &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 5);
+    poolSize = testPool.size();
+    testPool.removeRecursive(txParent);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize - 5);
     BOOST_CHECK_EQUAL(testPool.size(), 0);
-    removed.clear();
 
     // Add children and grandchildren, but NOT the parent (simulate the parent being in a block)
     for (int i = 0; i < 3; i++)
@@ -97,10 +99,10 @@ BOOST_AUTO_TEST_CASE(MempoolRemoveTest)
     }
     // Now remove the parent, as might happen if a block-re-org occurs but the parent cannot be
     // put into the mempool (maybe because it is non-standard):
-    testPool.removeRecursive(txParent, &removed);
-    BOOST_CHECK_EQUAL(removed.size(), 6);
+    poolSize = testPool.size();
+    testPool.removeRecursive(txParent);
+    BOOST_CHECK_EQUAL(testPool.size(), poolSize - 6);
     BOOST_CHECK_EQUAL(testPool.size(), 0);
-    removed.clear();
 }
 
 template<typename name>

src/txmempool.cpp

@@ -503,7 +503,7 @@ void CTxMemPool::CalculateDescendants(txiter entryit, setEntries &setDescendants
     }
 }
 
-void CTxMemPool::removeRecursive(const CTransaction &origTx, std::vector<CTransactionRef>* removed)
+void CTxMemPool::removeRecursive(const CTransaction &origTx)
 {
     // Remove transaction from memory pool
     {
@@ -530,11 +530,6 @@ void CTxMemPool::removeRecursive(const CTransaction &origTx, std::vector<CTransa
         BOOST_FOREACH(txiter it, txToRemove) {
             CalculateDescendants(it, setAllRemoves);
         }
-        if (removed) {
-            BOOST_FOREACH(txiter it, setAllRemoves) {
-                removed->emplace_back(it->GetSharedTx());
-            }
-        }
         RemoveStaged(setAllRemoves, false);
     }
 }
@@ -576,7 +571,7 @@ void CTxMemPool::removeForReorg(const CCoinsViewCache *pcoins, unsigned int nMem
     RemoveStaged(setAllRemoves, false);
 }
 
-void CTxMemPool::removeConflicts(const CTransaction &tx, std::vector<CTransactionRef>* removed)
+void CTxMemPool::removeConflicts(const CTransaction &tx)
 {
     // Remove transactions which depend on inputs of tx, recursively
     LOCK(cs);
@@ -586,7 +581,7 @@ void CTxMemPool::removeConflicts(const CTransaction &tx, std::vector<CTransactio
             const CTransaction &txConflict = *it->second;
             if (txConflict != tx)
             {
-                removeRecursive(txConflict, removed);
+                removeRecursive(txConflict);
                 ClearPrioritisation(txConflict.GetHash());
             }
         }

src/txmempool.h

@@ -527,9 +527,9 @@ class CTxMemPool
     bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, bool fCurrentEstimate = true);
     bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, setEntries &setAncestors, bool fCurrentEstimate = true);
 
-    void removeRecursive(const CTransaction &tx, std::vector<CTransactionRef>* removed = NULL);
+    void removeRecursive(const CTransaction &tx);
     void removeForReorg(const CCoinsViewCache *pcoins, unsigned int nMemPoolHeight, int flags);
-    void removeConflicts(const CTransaction &tx, std::vector<CTransactionRef>* removed = NULL);
+    void removeConflicts(const CTransaction &tx);
     void removeForBlock(const std::vector<CTransactionRef>& vtx, unsigned int nBlockHeight,
                         bool fCurrentEstimate = true);
     void clear();