diff options
| -rw-r--r-- | src/test/mempool_tests.cpp | 104 | ||||
| -rw-r--r-- | src/txmempool.cpp | 4 | ||||
| -rw-r--r-- | src/txmempool.h | 32 |
3 files changed, 137 insertions, 3 deletions
diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp index ebdf7dbaa2..c8b43df26c 100644 --- a/src/test/mempool_tests.cpp +++ b/src/test/mempool_tests.cpp @@ -317,6 +317,110 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest) CheckSort<mining_score>(pool, sortedOrder); } +BOOST_AUTO_TEST_CASE(MempoolAncestorIndexingTest) +{ + CTxMemPool pool(CFeeRate(0)); + TestMemPoolEntryHelper entry; + entry.hadNoDependencies = true; + + /* 3rd highest fee */ + CMutableTransaction tx1 = CMutableTransaction(); + tx1.vout.resize(1); + tx1.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx1.vout[0].nValue = 10 * COIN; + pool.addUnchecked(tx1.GetHash(), entry.Fee(10000LL).Priority(10.0).FromTx(tx1)); + + /* highest fee */ + CMutableTransaction tx2 = CMutableTransaction(); + tx2.vout.resize(1); + tx2.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx2.vout[0].nValue = 2 * COIN; + pool.addUnchecked(tx2.GetHash(), entry.Fee(20000LL).Priority(9.0).FromTx(tx2)); + uint64_t tx2Size = ::GetSerializeSize(tx2, SER_NETWORK, PROTOCOL_VERSION); + + /* lowest fee */ + CMutableTransaction tx3 = CMutableTransaction(); + tx3.vout.resize(1); + tx3.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx3.vout[0].nValue = 5 * COIN; + pool.addUnchecked(tx3.GetHash(), entry.Fee(0LL).Priority(100.0).FromTx(tx3)); + + /* 2nd highest fee */ + CMutableTransaction tx4 = CMutableTransaction(); + tx4.vout.resize(1); + tx4.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx4.vout[0].nValue = 6 * COIN; + pool.addUnchecked(tx4.GetHash(), entry.Fee(15000LL).Priority(1.0).FromTx(tx4)); + + /* equal fee rate to tx1, but newer */ + CMutableTransaction tx5 = CMutableTransaction(); + tx5.vout.resize(1); + tx5.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx5.vout[0].nValue = 11 * COIN; + pool.addUnchecked(tx5.GetHash(), entry.Fee(10000LL).FromTx(tx5)); + BOOST_CHECK_EQUAL(pool.size(), 5); + + std::vector<std::string> sortedOrder; + sortedOrder.resize(5); + sortedOrder[0] = tx2.GetHash().ToString(); // 20000 + sortedOrder[1] = tx4.GetHash().ToString(); // 15000 + // tx1 and tx5 are both 10000 + // Ties are broken by hash, not timestamp, so determine which + // hash comes first. + if (tx1.GetHash() < tx5.GetHash()) { + sortedOrder[2] = tx1.GetHash().ToString(); + sortedOrder[3] = tx5.GetHash().ToString(); + } else { + sortedOrder[2] = tx5.GetHash().ToString(); + sortedOrder[3] = tx1.GetHash().ToString(); + } + sortedOrder[4] = tx3.GetHash().ToString(); // 0 + + CheckSort<ancestor_score>(pool, sortedOrder); + + /* low fee parent with high fee child */ + /* tx6 (0) -> tx7 (high) */ + CMutableTransaction tx6 = CMutableTransaction(); + tx6.vout.resize(1); + tx6.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx6.vout[0].nValue = 20 * COIN; + uint64_t tx6Size = ::GetSerializeSize(tx6, SER_NETWORK, PROTOCOL_VERSION); + + pool.addUnchecked(tx6.GetHash(), entry.Fee(0LL).FromTx(tx6)); + BOOST_CHECK_EQUAL(pool.size(), 6); + sortedOrder.push_back(tx6.GetHash().ToString()); + CheckSort<ancestor_score>(pool, sortedOrder); + + CMutableTransaction tx7 = CMutableTransaction(); + tx7.vin.resize(1); + tx7.vin[0].prevout = COutPoint(tx6.GetHash(), 0); + tx7.vin[0].scriptSig = CScript() << OP_11; + tx7.vout.resize(1); + tx7.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; + tx7.vout[0].nValue = 10 * COIN; + uint64_t tx7Size = ::GetSerializeSize(tx7, SER_NETWORK, PROTOCOL_VERSION); + + /* set the fee to just below tx2's feerate when including ancestor */ + CAmount fee = (20000/tx2Size)*(tx7Size + tx6Size) - 1; + + //CTxMemPoolEntry entry7(tx7, fee, 2, 10.0, 1, true); + pool.addUnchecked(tx7.GetHash(), entry.Fee(fee).FromTx(tx7)); + BOOST_CHECK_EQUAL(pool.size(), 7); + sortedOrder.insert(sortedOrder.begin()+1, tx7.GetHash().ToString()); + CheckSort<ancestor_score>(pool, sortedOrder); + + /* after tx6 is mined, tx7 should move up in the sort */ + std::vector<CTransaction> vtx; + vtx.push_back(tx6); + std::list<CTransaction> dummy; + pool.removeForBlock(vtx, 1, dummy, false); + + sortedOrder.erase(sortedOrder.begin()+1); + sortedOrder.pop_back(); + sortedOrder.insert(sortedOrder.begin(), tx7.GetHash().ToString()); + CheckSort<ancestor_score>(pool, sortedOrder); +} + BOOST_AUTO_TEST_CASE(MempoolSizeLimitTest) { diff --git a/src/txmempool.cpp b/src/txmempool.cpp index f7961a6b80..48fbe56023 100644 --- a/src/txmempool.cpp +++ b/src/txmempool.cpp @@ -866,8 +866,8 @@ bool CCoinsViewMemPool::HaveCoins(const uint256 &txid) const { size_t CTxMemPool::DynamicMemoryUsage() const { LOCK(cs); - // Estimate the overhead of mapTx to be 12 pointers + an allocation, as no exact formula for boost::multi_index_contained is implemented. - return memusage::MallocUsage(sizeof(CTxMemPoolEntry) + 12 * sizeof(void*)) * mapTx.size() + memusage::DynamicUsage(mapNextTx) + memusage::DynamicUsage(mapDeltas) + memusage::DynamicUsage(mapLinks) + cachedInnerUsage; + // Estimate the overhead of mapTx to be 15 pointers + an allocation, as no exact formula for boost::multi_index_contained is implemented. + return memusage::MallocUsage(sizeof(CTxMemPoolEntry) + 15 * sizeof(void*)) * mapTx.size() + memusage::DynamicUsage(mapNextTx) + memusage::DynamicUsage(mapDeltas) + memusage::DynamicUsage(mapLinks) + cachedInnerUsage; } void CTxMemPool::RemoveStaged(setEntries &stage, bool updateDescendants) { diff --git a/src/txmempool.h b/src/txmempool.h index 0db3d5bd27..3f80a6ec24 100644 --- a/src/txmempool.h +++ b/src/txmempool.h @@ -244,10 +244,34 @@ public: } }; +class CompareTxMemPoolEntryByAncestorFee +{ +public: + bool operator()(const CTxMemPoolEntry& a, const CTxMemPoolEntry& b) + { + double aFees = a.GetModFeesWithAncestors(); + double aSize = a.GetSizeWithAncestors(); + + double bFees = b.GetModFeesWithAncestors(); + double bSize = b.GetSizeWithAncestors(); + + // Avoid division by rewriting (a/b > c/d) as (a*d > c*b). + double f1 = aFees * bSize; + double f2 = aSize * bFees; + + if (f1 == f2) { + return a.GetTx().GetHash() < b.GetTx().GetHash(); + } + + return f1 > f2; + } +}; + // Multi_index tag names struct descendant_score {}; struct entry_time {}; struct mining_score {}; +struct ancestor_score {}; class CBlockPolicyEstimator; @@ -380,12 +404,18 @@ public: boost::multi_index::tag<entry_time>, boost::multi_index::identity<CTxMemPoolEntry>, CompareTxMemPoolEntryByEntryTime - >, + >, // sorted by score (for mining prioritization) boost::multi_index::ordered_unique< boost::multi_index::tag<mining_score>, boost::multi_index::identity<CTxMemPoolEntry>, CompareTxMemPoolEntryByScore + >, + // sorted by fee rate with ancestors + boost::multi_index::ordered_non_unique< + boost::multi_index::tag<ancestor_score>, + boost::multi_index::identity<CTxMemPoolEntry>, + CompareTxMemPoolEntryByAncestorFee > > > indexed_transaction_set; 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