diff --git a/src/miner.cpp b/src/miner.cpp index 27a1fbcf8..c6db00d30 100644 --- a/src/miner.cpp +++ b/src/miner.cpp @@ -27,6 +27,7 @@ #include #include +#include using namespace std; @@ -40,48 +41,18 @@ using namespace std; // transactions in the memory pool. When we select transactions from the // pool, we select by highest priority or fee rate, so we might consider // transactions that depend on transactions that aren't yet in the block. -// The COrphan class keeps track of these 'temporary orphans' while -// CreateBlock is figuring out which transactions to include. -// -class COrphan -{ -public: - const CTransaction* ptx; - set setDependsOn; - CFeeRate feeRate; - double dPriority; - - COrphan(const CTransaction* ptxIn) : ptx(ptxIn), feeRate(0), dPriority(0) - { - } -}; uint64_t nLastBlockTx = 0; uint64_t nLastBlockSize = 0; -// We want to sort transactions by priority and fee rate, so: -typedef boost::tuple TxPriority; -class TxPriorityCompare +class ScoreCompare { - bool byFee; - public: - TxPriorityCompare(bool _byFee) : byFee(_byFee) { } + ScoreCompare() {} - bool operator()(const TxPriority& a, const TxPriority& b) + bool operator()(const CTxMemPool::txiter a, const CTxMemPool::txiter b) { - if (byFee) - { - if (a.get<1>() == b.get<1>()) - return a.get<0>() < b.get<0>(); - return a.get<1>() < b.get<1>(); - } - else - { - if (a.get<0>() == b.get<0>()) - return a.get<1>() < b.get<1>(); - return a.get<0>() < b.get<0>(); - } + return CompareTxMemPoolEntryByScore()(*b,*a); // Convert to less than } }; @@ -141,6 +112,22 @@ CBlockTemplate* CreateNewBlock(const CChainParams& chainparams, const CScript& s nBlockMinSize = std::min(nBlockMaxSize, nBlockMinSize); // Collect memory pool transactions into the block + CTxMemPool::setEntries inBlock; + CTxMemPool::setEntries waitSet; + + // This vector will be sorted into a priority queue: + vector vecPriority; + TxCoinAgePriorityCompare pricomparer; + std::map waitPriMap; + typedef std::map::iterator waitPriIter; + double actualPriority = -1; + + std::priority_queue, ScoreCompare> clearedTxs; + bool fPrintPriority = GetBoolArg("-printpriority", DEFAULT_PRINTPRIORITY); + uint64_t nBlockSize = 1000; + uint64_t nBlockTx = 0; + unsigned int nBlockSigOps = 100; + int lastFewTxs = 0; CAmount nFees = 0; { @@ -149,157 +136,102 @@ CBlockTemplate* CreateNewBlock(const CChainParams& chainparams, const CScript& s const int nHeight = pindexPrev->nHeight + 1; pblock->nTime = GetAdjustedTime(); const int64_t nMedianTimePast = pindexPrev->GetMedianTimePast(); - CCoinsViewCache view(pcoinsTip); - - // Priority order to process transactions - list vOrphan; // list memory doesn't move - map > mapDependers; - bool fPrintPriority = GetBoolArg("-printpriority", DEFAULT_PRINTPRIORITY); - - // This vector will be sorted into a priority queue: - vector vecPriority; - vecPriority.reserve(mempool.mapTx.size()); - for (CTxMemPool::indexed_transaction_set::iterator mi = mempool.mapTx.begin(); - mi != mempool.mapTx.end(); ++mi) - { - const CTransaction& tx = mi->GetTx(); - - int64_t nLockTimeCutoff = (STANDARD_LOCKTIME_VERIFY_FLAGS & LOCKTIME_MEDIAN_TIME_PAST) - ? nMedianTimePast - : pblock->GetBlockTime(); - - if (tx.IsCoinBase() || !IsFinalTx(tx, nHeight, nLockTimeCutoff)) - continue; - - COrphan* porphan = NULL; - double dPriority = 0; - CAmount nTotalIn = 0; - bool fMissingInputs = false; - BOOST_FOREACH(const CTxIn& txin, tx.vin) - { - // Read prev transaction - if (!view.HaveCoins(txin.prevout.hash)) - { - // This should never happen; all transactions in the memory - // pool should connect to either transactions in the chain - // or other transactions in the memory pool. - if (!mempool.mapTx.count(txin.prevout.hash)) - { - LogPrintf("ERROR: mempool transaction missing input\n"); - if (fDebug) assert("mempool transaction missing input" == 0); - fMissingInputs = true; - if (porphan) - vOrphan.pop_back(); - break; - } - - // Has to wait for dependencies - if (!porphan) - { - // Use list for automatic deletion - vOrphan.push_back(COrphan(&tx)); - porphan = &vOrphan.back(); - } - mapDependers[txin.prevout.hash].push_back(porphan); - porphan->setDependsOn.insert(txin.prevout.hash); - nTotalIn += mempool.mapTx.find(txin.prevout.hash)->GetTx().vout[txin.prevout.n].nValue; - continue; - } - const CCoins* coins = view.AccessCoins(txin.prevout.hash); - assert(coins); - - CAmount nValueIn = coins->vout[txin.prevout.n].nValue; - nTotalIn += nValueIn; - - int nConf = nHeight - coins->nHeight; - - dPriority += (double)nValueIn * nConf; - } - if (fMissingInputs) continue; - - // Priority is sum(valuein * age) / modified_txsize - unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); - dPriority = tx.ComputePriority(dPriority, nTxSize); - - uint256 hash = tx.GetHash(); - mempool.ApplyDeltas(hash, dPriority, nTotalIn); - CFeeRate feeRate(nTotalIn-tx.GetValueOut(), nTxSize); + int64_t nLockTimeCutoff = (STANDARD_LOCKTIME_VERIFY_FLAGS & LOCKTIME_MEDIAN_TIME_PAST) + ? nMedianTimePast + : pblock->GetBlockTime(); - if (porphan) + bool fPriorityBlock = nBlockPrioritySize > 0; + if (fPriorityBlock) { + vecPriority.reserve(mempool.mapTx.size()); + for (CTxMemPool::indexed_transaction_set::iterator mi = mempool.mapTx.begin(); + mi != mempool.mapTx.end(); ++mi) { - porphan->dPriority = dPriority; - porphan->feeRate = feeRate; + double dPriority = mi->GetPriority(nHeight); + CAmount dummy; + mempool.ApplyDeltas(mi->GetTx().GetHash(), dPriority, dummy); + vecPriority.push_back(TxCoinAgePriority(dPriority, mi)); } - else - vecPriority.push_back(TxPriority(dPriority, feeRate, &(mi->GetTx()))); + std::make_heap(vecPriority.begin(), vecPriority.end(), pricomparer); } - // Collect transactions into block - uint64_t nBlockSize = 1000; - uint64_t nBlockTx = 0; - int nBlockSigOps = 100; - bool fSortedByFee = (nBlockPrioritySize <= 0); + CTxMemPool::indexed_transaction_set::nth_index<3>::type::iterator mi = mempool.mapTx.get<3>().begin(); + CTxMemPool::txiter iter; - TxPriorityCompare comparer(fSortedByFee); - std::make_heap(vecPriority.begin(), vecPriority.end(), comparer); - - while (!vecPriority.empty()) + while (mi != mempool.mapTx.get<3>().end() || !clearedTxs.empty()) { - // Take highest priority transaction off the priority queue: - double dPriority = vecPriority.front().get<0>(); - CFeeRate feeRate = vecPriority.front().get<1>(); - const CTransaction& tx = *(vecPriority.front().get<2>()); - - std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer); - vecPriority.pop_back(); - - // Size limits - unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); - if (nBlockSize + nTxSize >= nBlockMaxSize) - continue; + bool priorityTx = false; + if (fPriorityBlock && !vecPriority.empty()) { // add a tx from priority queue to fill the blockprioritysize + priorityTx = true; + iter = vecPriority.front().second; + actualPriority = vecPriority.front().first; + std::pop_heap(vecPriority.begin(), vecPriority.end(), pricomparer); + vecPriority.pop_back(); + } + else if (clearedTxs.empty()) { // add tx with next highest score + iter = mempool.mapTx.project<0>(mi); + mi++; + } + else { // try to add a previously postponed child tx + iter = clearedTxs.top(); + clearedTxs.pop(); + } - // Legacy limits on sigOps: - unsigned int nTxSigOps = GetLegacySigOpCount(tx); - if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS) - continue; + if (inBlock.count(iter)) + continue; // could have been added to the priorityBlock - // Skip free transactions if we're past the minimum block size: - const uint256& hash = tx.GetHash(); - double dPriorityDelta = 0; - CAmount nFeeDelta = 0; - mempool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta); - if (fSortedByFee && (dPriorityDelta <= 0) && (nFeeDelta <= 0) && (feeRate < ::minRelayTxFee) && (nBlockSize + nTxSize >= nBlockMinSize)) - continue; + const CTransaction& tx = iter->GetTx(); - // Prioritise by fee once past the priority size or we run out of high-priority - // transactions: - if (!fSortedByFee && - ((nBlockSize + nTxSize >= nBlockPrioritySize) || !AllowFree(dPriority))) + bool fOrphan = false; + BOOST_FOREACH(CTxMemPool::txiter parent, mempool.GetMemPoolParents(iter)) { - fSortedByFee = true; - comparer = TxPriorityCompare(fSortedByFee); - std::make_heap(vecPriority.begin(), vecPriority.end(), comparer); + if (!inBlock.count(parent)) { + fOrphan = true; + break; + } } - - if (!view.HaveInputs(tx)) + if (fOrphan) { + if (priorityTx) + waitPriMap.insert(std::make_pair(iter,actualPriority)); + else + waitSet.insert(iter); continue; + } - CAmount nTxFees = view.GetValueIn(tx)-tx.GetValueOut(); - - nTxSigOps += GetP2SHSigOpCount(tx, view); - if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS) + unsigned int nTxSize = iter->GetTxSize(); + if (fPriorityBlock && + (nBlockSize + nTxSize >= nBlockPrioritySize || !AllowFree(actualPriority))) { + fPriorityBlock = false; + waitPriMap.clear(); + } + if (!priorityTx && + (iter->GetModifiedFee() < ::minRelayTxFee.GetFee(nTxSize) && nBlockSize >= nBlockMinSize)) { + break; + } + if (nBlockSize + nTxSize >= nBlockMaxSize) { + if (nBlockSize > nBlockMaxSize - 100 || lastFewTxs > 50) { + break; + } + // Once we're within 1000 bytes of a full block, only look at 50 more txs + // to try to fill the remaining space. + if (nBlockSize > nBlockMaxSize - 1000) { + lastFewTxs++; + } continue; + } - // Note that flags: we don't want to set mempool/IsStandard() - // policy here, but we still have to ensure that the block we - // create only contains transactions that are valid in new blocks. - CValidationState state; - if (!CheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS, true)) + if (!IsFinalTx(tx, nHeight, nLockTimeCutoff)) continue; - UpdateCoins(tx, state, view, nHeight); + unsigned int nTxSigOps = iter->GetSigOpCount(); + if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS) { + if (nBlockSigOps > MAX_BLOCK_SIGOPS - 2) { + break; + } + continue; + } + CAmount nTxFees = iter->GetFee(); // Added pblock->vtx.push_back(tx); pblocktemplate->vTxFees.push_back(nTxFees); @@ -311,31 +243,37 @@ CBlockTemplate* CreateNewBlock(const CChainParams& chainparams, const CScript& s if (fPrintPriority) { + double dPriority = iter->GetPriority(nHeight); + CAmount dummy; + mempool.ApplyDeltas(tx.GetHash(), dPriority, dummy); LogPrintf("priority %.1f fee %s txid %s\n", - dPriority, feeRate.ToString(), tx.GetHash().ToString()); + dPriority , CFeeRate(iter->GetModifiedFee(), nTxSize).ToString(), tx.GetHash().ToString()); } + inBlock.insert(iter); + // Add transactions that depend on this one to the priority queue - if (mapDependers.count(hash)) + BOOST_FOREACH(CTxMemPool::txiter child, mempool.GetMemPoolChildren(iter)) { - BOOST_FOREACH(COrphan* porphan, mapDependers[hash]) - { - if (!porphan->setDependsOn.empty()) - { - porphan->setDependsOn.erase(hash); - if (porphan->setDependsOn.empty()) - { - vecPriority.push_back(TxPriority(porphan->dPriority, porphan->feeRate, porphan->ptx)); - std::push_heap(vecPriority.begin(), vecPriority.end(), comparer); - } + if (fPriorityBlock) { + waitPriIter wpiter = waitPriMap.find(child); + if (wpiter != waitPriMap.end()) { + vecPriority.push_back(TxCoinAgePriority(wpiter->second,child)); + std::push_heap(vecPriority.begin(), vecPriority.end(), pricomparer); + waitPriMap.erase(wpiter); + } + } + else { + if (waitSet.count(child)) { + clearedTxs.push(child); + waitSet.erase(child); } } } } - nLastBlockTx = nBlockTx; nLastBlockSize = nBlockSize; - LogPrintf("CreateNewBlock(): total size %u\n", nBlockSize); + LogPrintf("CreateNewBlock(): total size %u txs: %u fees: %ld sigops %d\n", nBlockSize, nBlockTx, nFees, nBlockSigOps); // Compute final coinbase transaction. txNew.vout[0].nValue = nFees + GetBlockSubsidy(nHeight, chainparams.GetConsensus()); @@ -351,8 +289,9 @@ CBlockTemplate* CreateNewBlock(const CChainParams& chainparams, const CScript& s pblocktemplate->vTxSigOps[0] = GetLegacySigOpCount(pblock->vtx[0]); CValidationState state; - if (!TestBlockValidity(state, chainparams, *pblock, pindexPrev, false, false)) - throw std::runtime_error("CreateNewBlock(): TestBlockValidity failed"); + if (!TestBlockValidity(state, chainparams, *pblock, pindexPrev, false, false)) { + throw std::runtime_error(strprintf("%s: TestBlockValidity failed: %s", __func__, FormatStateMessage(state))); + } } return pblocktemplate.release(); diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp index 531cd59d5..19ddb5b79 100644 --- a/src/test/miner_tests.cpp +++ b/src/test/miner_tests.cpp @@ -120,7 +120,22 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) tx.vout[0].nValue -= 1000000; hash = tx.GetHash(); bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx)); + // If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails + mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx)); + tx.vin[0].prevout.hash = hash; + } + BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error); + mempool.clear(); + + tx.vin[0].prevout.hash = txFirst[0]->GetHash(); + tx.vout[0].nValue = 5000000000LL; + for (unsigned int i = 0; i < 1001; ++i) + { + tx.vout[0].nValue -= 1000000; + hash = tx.GetHash(); + bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase + // If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes + mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOps(20).FromTx(tx)); tx.vin[0].prevout.hash = hash; } BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); @@ -141,18 +156,17 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) tx.vout[0].nValue -= 10000000; hash = tx.GetHash(); bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx)); + mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx)); tx.vin[0].prevout.hash = hash; } BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); delete pblocktemplate; mempool.clear(); - // orphan in mempool + // orphan in mempool, template creation fails hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx)); - BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); - delete pblocktemplate; + mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).FromTx(tx)); + BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error); mempool.clear(); // child with higher priority than parent @@ -160,7 +174,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) tx.vin[0].prevout.hash = txFirst[1]->GetHash(); tx.vout[0].nValue = 4900000000LL; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); + mempool.addUnchecked(hash, entry.Fee(100000000LL).Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); tx.vin[0].prevout.hash = hash; tx.vin.resize(2); tx.vin[1].scriptSig = CScript() << OP_1; @@ -168,23 +182,23 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) tx.vin[1].prevout.n = 0; tx.vout[0].nValue = 5900000000LL; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); + mempool.addUnchecked(hash, entry.Fee(400000000LL).Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); delete pblocktemplate; mempool.clear(); - // coinbase in mempool + // coinbase in mempool, template creation fails tx.vin.resize(1); tx.vin[0].prevout.SetNull(); tx.vin[0].scriptSig = CScript() << OP_0 << OP_1; tx.vout[0].nValue = 0; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(false).FromTx(tx)); - BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); - delete pblocktemplate; + // give it a fee so it'll get mined + mempool.addUnchecked(hash, entry.Fee(100000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx)); + BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error); mempool.clear(); - // invalid (pre-p2sh) txn in mempool + // invalid (pre-p2sh) txn in mempool, template creation fails tx.vin[0].prevout.hash = txFirst[0]->GetHash(); tx.vin[0].prevout.n = 0; tx.vin[0].scriptSig = CScript() << OP_1; @@ -192,28 +206,26 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) script = CScript() << OP_0; tx.vout[0].scriptPubKey = GetScriptForDestination(CScriptID(script)); hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); + mempool.addUnchecked(hash, entry.Fee(10000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); tx.vin[0].prevout.hash = hash; tx.vin[0].scriptSig = CScript() << std::vector(script.begin(), script.end()); tx.vout[0].nValue -= 1000000; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(false).FromTx(tx)); - BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); - delete pblocktemplate; + mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx)); + BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error); mempool.clear(); - // double spend txn pair in mempool + // double spend txn pair in mempool, template creation fails tx.vin[0].prevout.hash = txFirst[0]->GetHash(); tx.vin[0].scriptSig = CScript() << OP_1; tx.vout[0].nValue = 4900000000LL; tx.vout[0].scriptPubKey = CScript() << OP_1; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); + mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); tx.vout[0].scriptPubKey = CScript() << OP_2; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); - BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey)); - delete pblocktemplate; + mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); + BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error); mempool.clear(); // subsidy changing @@ -237,7 +249,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) tx.vout[0].scriptPubKey = CScript() << OP_1; tx.nLockTime = chainActive.Tip()->nHeight+1; hash = tx.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); + mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx)); BOOST_CHECK(!CheckFinalTx(tx, LOCKTIME_MEDIAN_TIME_PAST)); // time locked @@ -251,7 +263,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) tx2.vout[0].scriptPubKey = CScript() << OP_1; tx2.nLockTime = chainActive.Tip()->GetMedianTimePast()+1; hash = tx2.GetHash(); - mempool.addUnchecked(hash, entry.Time(GetTime()).SpendsCoinbase(true).FromTx(tx2)); + mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx2)); BOOST_CHECK(!CheckFinalTx(tx2, LOCKTIME_MEDIAN_TIME_PAST)); BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));