diff --git a/qa/rpc-tests/mempool_packages.py b/qa/rpc-tests/mempool_packages.py index 34b316a6a..063308d39 100755 --- a/qa/rpc-tests/mempool_packages.py +++ b/qa/rpc-tests/mempool_packages.py @@ -64,17 +64,41 @@ class MempoolPackagesTest(BitcoinTestFramework): for x in reversed(chain): assert_equal(mempool[x]['descendantcount'], descendant_count) descendant_fees += mempool[x]['fee'] + assert_equal(mempool[x]['modifiedfee'], mempool[x]['fee']) assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees) descendant_size += mempool[x]['size'] assert_equal(mempool[x]['descendantsize'], descendant_size) descendant_count += 1 + # Check that descendant modified fees includes fee deltas from + # prioritisetransaction + self.nodes[0].prioritisetransaction(chain[-1], 0, 1000) + mempool = self.nodes[0].getrawmempool(True) + + descendant_fees = 0 + for x in reversed(chain): + descendant_fees += mempool[x]['fee'] + assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees+1000) + # Adding one more transaction on to the chain should fail. try: self.chain_transaction(self.nodes[0], txid, vout, value, fee, 1) except JSONRPCException as e: print "too-long-ancestor-chain successfully rejected" + # Check that prioritising a tx before it's added to the mempool works + self.nodes[0].generate(1) + self.nodes[0].prioritisetransaction(chain[-1], 0, 2000) + self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash()) + mempool = self.nodes[0].getrawmempool(True) + + descendant_fees = 0 + for x in reversed(chain): + descendant_fees += mempool[x]['fee'] + if (x == chain[-1]): + assert_equal(mempool[x]['modifiedfee'], mempool[x]['fee']+satoshi_round(0.00002)) + assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees+2000) + # TODO: check that node1's mempool is as expected # TODO: test ancestor size limits diff --git a/qa/rpc-tests/prioritise_transaction.py b/qa/rpc-tests/prioritise_transaction.py index f376ceee5..d9492f27a 100755 --- a/qa/rpc-tests/prioritise_transaction.py +++ b/qa/rpc-tests/prioritise_transaction.py @@ -143,5 +143,45 @@ class PrioritiseTransactionTest(BitcoinTestFramework): if (x != high_fee_tx): assert(x not in mempool) + # Create a free, low priority transaction. Should be rejected. + utxo_list = self.nodes[0].listunspent() + assert(len(utxo_list) > 0) + utxo = utxo_list[0] + + inputs = [] + outputs = {} + inputs.append({"txid" : utxo["txid"], "vout" : utxo["vout"]}) + outputs[self.nodes[0].getnewaddress()] = utxo["amount"] - self.relayfee + raw_tx = self.nodes[0].createrawtransaction(inputs, outputs) + tx_hex = self.nodes[0].signrawtransaction(raw_tx)["hex"] + txid = self.nodes[0].sendrawtransaction(tx_hex) + + # A tx that spends an in-mempool tx has 0 priority, so we can use it to + # test the effect of using prioritise transaction for mempool acceptance + inputs = [] + inputs.append({"txid": txid, "vout": 0}) + outputs = {} + outputs[self.nodes[0].getnewaddress()] = utxo["amount"] - self.relayfee + raw_tx2 = self.nodes[0].createrawtransaction(inputs, outputs) + tx2_hex = self.nodes[0].signrawtransaction(raw_tx2)["hex"] + tx2_id = self.nodes[0].decoderawtransaction(tx2_hex)["txid"] + + try: + self.nodes[0].sendrawtransaction(tx2_hex) + except JSONRPCException as exp: + assert_equal(exp.error['code'], -26) # insufficient fee + assert(tx2_id not in self.nodes[0].getrawmempool()) + else: + assert(False) + + # This is a less than 1000-byte transaction, so just set the fee + # to be the minimum for a 1000 byte transaction and check that it is + # accepted. + self.nodes[0].prioritisetransaction(tx2_id, 0, int(self.relayfee*COIN)) + + print "Assert that prioritised free transaction is accepted to mempool" + assert_equal(self.nodes[0].sendrawtransaction(tx2_hex), tx2_id) + assert(tx2_id in self.nodes[0].getrawmempool()) + if __name__ == '__main__': PrioritiseTransactionTest().main() diff --git a/qa/rpc-tests/replace-by-fee.py b/qa/rpc-tests/replace-by-fee.py index 6e9e0b304..734db33b5 100755 --- a/qa/rpc-tests/replace-by-fee.py +++ b/qa/rpc-tests/replace-by-fee.py @@ -63,8 +63,14 @@ def make_utxo(node, amount, confirmed=True, scriptPubKey=CScript([1])): # If requested, ensure txouts are confirmed. if confirmed: - while len(node.getrawmempool()): + mempool_size = len(node.getrawmempool()) + while mempool_size > 0: node.generate(1) + new_size = len(node.getrawmempool()) + # Error out if we have something stuck in the mempool, as this + # would likely be a bug. + assert(new_size < mempool_size) + mempool_size = new_size return COutPoint(int(txid, 16), 0) @@ -72,7 +78,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): def setup_network(self): self.nodes = [] - self.nodes.append(start_node(0, self.options.tmpdir, ["-maxorphantx=1000", + self.nodes.append(start_node(0, self.options.tmpdir, ["-maxorphantx=1000", "-debug", "-relaypriority=0", "-whitelist=127.0.0.1", "-limitancestorcount=50", "-limitancestorsize=101", @@ -108,6 +114,9 @@ class ReplaceByFeeTest(BitcoinTestFramework): print "Running test opt-in..." self.test_opt_in() + print "Running test prioritised transactions..." + self.test_prioritised_transactions() + print "Passed\n" def test_simple_doublespend(self): @@ -513,5 +522,72 @@ class ReplaceByFeeTest(BitcoinTestFramework): # but make sure it is accepted anyway self.nodes[0].sendrawtransaction(tx3c_hex, True) + def test_prioritised_transactions(self): + # Ensure that fee deltas used via prioritisetransaction are + # correctly used by replacement logic + + # 1. Check that feeperkb uses modified fees + tx0_outpoint = make_utxo(self.nodes[0], 1.1*COIN) + + tx1a = CTransaction() + tx1a.vin = [CTxIn(tx0_outpoint, nSequence=0)] + tx1a.vout = [CTxOut(1*COIN, CScript([b'a']))] + tx1a_hex = txToHex(tx1a) + tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, True) + + # Higher fee, but the actual fee per KB is much lower. + tx1b = CTransaction() + tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] + tx1b.vout = [CTxOut(0.001*COIN, CScript([b'a'*740000]))] + tx1b_hex = txToHex(tx1b) + + # Verify tx1b cannot replace tx1a. + try: + tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, True) + except JSONRPCException as exp: + assert_equal(exp.error['code'], -26) + else: + assert(False) + + # Use prioritisetransaction to set tx1a's fee to 0. + self.nodes[0].prioritisetransaction(tx1a_txid, 0, int(-0.1*COIN)) + + # Now tx1b should be able to replace tx1a + tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, True) + + assert(tx1b_txid in self.nodes[0].getrawmempool()) + + # 2. Check that absolute fee checks use modified fee. + tx1_outpoint = make_utxo(self.nodes[0], 1.1*COIN) + + tx2a = CTransaction() + tx2a.vin = [CTxIn(tx1_outpoint, nSequence=0)] + tx2a.vout = [CTxOut(1*COIN, CScript([b'a']))] + tx2a_hex = txToHex(tx2a) + tx2a_txid = self.nodes[0].sendrawtransaction(tx2a_hex, True) + + # Lower fee, but we'll prioritise it + tx2b = CTransaction() + tx2b.vin = [CTxIn(tx1_outpoint, nSequence=0)] + tx2b.vout = [CTxOut(1.01*COIN, CScript([b'a']))] + tx2b.rehash() + tx2b_hex = txToHex(tx2b) + + # Verify tx2b cannot replace tx2a. + try: + tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, True) + except JSONRPCException as exp: + assert_equal(exp.error['code'], -26) + else: + assert(False) + + # Now prioritise tx2b to have a higher modified fee + self.nodes[0].prioritisetransaction(tx2b.hash, 0, int(0.1*COIN)) + + # tx2b should now be accepted + tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, True) + + assert(tx2b_txid in self.nodes[0].getrawmempool()) + if __name__ == '__main__': ReplaceByFeeTest().main() diff --git a/src/main.cpp b/src/main.cpp index 41fc0b809..a43eef07b 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -800,32 +800,6 @@ void LimitMempoolSize(CTxMemPool& pool, size_t limit, unsigned long age) { pcoinsTip->Uncache(removed); } -CAmount GetMinRelayFee(const CTransaction& tx, const CTxMemPool& pool, unsigned int nBytes, bool fAllowFree) -{ - uint256 hash = tx.GetHash(); - double dPriorityDelta = 0; - CAmount nFeeDelta = 0; - pool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta); - if (dPriorityDelta > 0 || nFeeDelta > 0) - return 0; - - CAmount nMinFee = ::minRelayTxFee.GetFee(nBytes); - - if (fAllowFree) - { - // There is a free transaction area in blocks created by most miners, - // * If we are relaying we allow transactions up to DEFAULT_BLOCK_PRIORITY_SIZE - 1000 - // to be considered to fall into this category. We don't want to encourage sending - // multiple transactions instead of one big transaction to avoid fees. - if (nBytes < (DEFAULT_BLOCK_PRIORITY_SIZE - 1000)) - nMinFee = 0; - } - - if (!MoneyRange(nMinFee)) - nMinFee = MAX_MONEY; - return nMinFee; -} - /** Convert CValidationState to a human-readable message for logging */ std::string FormatStateMessage(const CValidationState &state) { @@ -968,6 +942,11 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C CAmount nValueOut = tx.GetValueOut(); CAmount nFees = nValueIn-nValueOut; + // nModifiedFees includes any fee deltas from PrioritiseTransaction + CAmount nModifiedFees = nFees; + double nPriorityDummy = 0; + pool.ApplyDeltas(hash, nPriorityDummy, nModifiedFees); + CAmount inChainInputValue; double dPriority = view.GetPriority(tx, chainActive.Height(), inChainInputValue); @@ -985,16 +964,10 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C CTxMemPoolEntry entry(tx, nFees, GetTime(), dPriority, chainActive.Height(), pool.HasNoInputsOf(tx), inChainInputValue, fSpendsCoinbase, nSigOps); unsigned int nSize = entry.GetTxSize(); - // Don't accept it if it can't get into a block - CAmount txMinFee = GetMinRelayFee(tx, pool, nSize, true); - if (fLimitFree && nFees < txMinFee) - return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "insufficient fee", false, - strprintf("%d < %d", nFees, txMinFee)); - CAmount mempoolRejectFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFee(nSize); - if (mempoolRejectFee > 0 && nFees < mempoolRejectFee) { + if (mempoolRejectFee > 0 && nModifiedFees < mempoolRejectFee) { return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "mempool min fee not met", false, strprintf("%d < %d", nFees, mempoolRejectFee)); - } else if (GetBoolArg("-relaypriority", DEFAULT_RELAYPRIORITY) && nFees < ::minRelayTxFee.GetFee(nSize) && !AllowFree(entry.GetPriority(chainActive.Height() + 1))) { + } else if (GetBoolArg("-relaypriority", DEFAULT_RELAYPRIORITY) && nModifiedFees < ::minRelayTxFee.GetFee(nSize) && !AllowFree(entry.GetPriority(chainActive.Height() + 1))) { // Require that free transactions have sufficient priority to be mined in the next block. return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "insufficient priority"); } @@ -1002,7 +975,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C // Continuously rate-limit free (really, very-low-fee) transactions // This mitigates 'penny-flooding' -- sending thousands of free transactions just to // be annoying or make others' transactions take longer to confirm. - if (fLimitFree && nFees < ::minRelayTxFee.GetFee(nSize)) + if (fLimitFree && nModifiedFees < ::minRelayTxFee.GetFee(nSize)) { static CCriticalSection csFreeLimiter; static double dFreeCount; @@ -1067,7 +1040,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C LOCK(pool.cs); if (setConflicts.size()) { - CFeeRate newFeeRate(nFees, nSize); + CFeeRate newFeeRate(nModifiedFees, nSize); set setConflictsParents; const int maxDescendantsToVisit = 100; CTxMemPool::setEntries setIterConflicting; @@ -1110,7 +1083,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C // ignored when deciding whether or not to replace, we do // require the replacement to pay more overall fees too, // mitigating most cases. - CFeeRate oldFeeRate(mi->GetFee(), mi->GetTxSize()); + CFeeRate oldFeeRate(mi->GetModifiedFee(), mi->GetTxSize()); if (newFeeRate <= oldFeeRate) { return state.DoS(0, @@ -1138,7 +1111,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C pool.CalculateDescendants(it, allConflicting); } BOOST_FOREACH(CTxMemPool::txiter it, allConflicting) { - nConflictingFees += it->GetFee(); + nConflictingFees += it->GetModifiedFee(); nConflictingSize += it->GetTxSize(); } } else { @@ -1171,16 +1144,16 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C // The replacement must pay greater fees than the transactions it // replaces - if we did the bandwidth used by those conflicting // transactions would not be paid for. - if (nFees < nConflictingFees) + if (nModifiedFees < nConflictingFees) { return state.DoS(0, error("AcceptToMemoryPool: rejecting replacement %s, less fees than conflicting txs; %s < %s", - hash.ToString(), FormatMoney(nFees), FormatMoney(nConflictingFees)), + hash.ToString(), FormatMoney(nModifiedFees), FormatMoney(nConflictingFees)), REJECT_INSUFFICIENTFEE, "insufficient fee"); } // Finally in addition to paying more fees than the conflicts the // new transaction must pay for its own bandwidth. - CAmount nDeltaFees = nFees - nConflictingFees; + CAmount nDeltaFees = nModifiedFees - nConflictingFees; if (nDeltaFees < ::minRelayTxFee.GetFee(nSize)) { return state.DoS(0, @@ -1218,7 +1191,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C LogPrint("mempool", "replacing tx %s with %s for %s BTC additional fees, %d delta bytes\n", it->GetTx().GetHash().ToString(), hash.ToString(), - FormatMoney(nFees - nConflictingFees), + FormatMoney(nModifiedFees - nConflictingFees), (int)nSize - (int)nConflictingSize); } pool.RemoveStaged(allConflicting); diff --git a/src/main.h b/src/main.h index 25a006387..7ae4893e0 100644 --- a/src/main.h +++ b/src/main.h @@ -300,8 +300,6 @@ struct CDiskTxPos : public CDiskBlockPos }; -CAmount GetMinRelayFee(const CTransaction& tx, unsigned int nBytes, bool fAllowFree); - /** * Count ECDSA signature operations the old-fashioned (pre-0.6) way * @return number of sigops this transaction's outputs will produce when spent diff --git a/src/rpcblockchain.cpp b/src/rpcblockchain.cpp index ee04636ce..73e6f8029 100644 --- a/src/rpcblockchain.cpp +++ b/src/rpcblockchain.cpp @@ -197,7 +197,7 @@ UniValue mempoolToJSON(bool fVerbose = false) info.push_back(Pair("currentpriority", e.GetPriority(chainActive.Height()))); info.push_back(Pair("descendantcount", e.GetCountWithDescendants())); info.push_back(Pair("descendantsize", e.GetSizeWithDescendants())); - info.push_back(Pair("descendantfees", e.GetFeesWithDescendants())); + info.push_back(Pair("descendantfees", e.GetModFeesWithDescendants())); const CTransaction& tx = e.GetTx(); set setDepends; BOOST_FOREACH(const CTxIn& txin, tx.vin) @@ -255,7 +255,7 @@ UniValue getrawmempool(const UniValue& params, bool fHelp) " \"currentpriority\" : n, (numeric) transaction priority now\n" " \"descendantcount\" : n, (numeric) number of in-mempool descendant transactions (including this one)\n" " \"descendantsize\" : n, (numeric) size of in-mempool descendants (including this one)\n" - " \"descendantfees\" : n, (numeric) fees of in-mempool descendants (including this one)\n" + " \"descendantfees\" : n, (numeric) modified fees (see above) of in-mempool descendants (including this one)\n" " \"depends\" : [ (array) unconfirmed transactions used as inputs for this transaction\n" " \"transactionid\", (string) parent transaction id\n" " ... ]\n" diff --git a/src/txmempool.cpp b/src/txmempool.cpp index fea5da802..c72a1e8c1 100644 --- a/src/txmempool.cpp +++ b/src/txmempool.cpp @@ -33,7 +33,7 @@ CTxMemPoolEntry::CTxMemPoolEntry(const CTransaction& _tx, const CAmount& _nFee, nCountWithDescendants = 1; nSizeWithDescendants = nTxSize; - nFeesWithDescendants = nFee; + nModFeesWithDescendants = nFee; CAmount nValueIn = tx.GetValueOut()+nFee; assert(inChainInputValue <= nValueIn); @@ -57,6 +57,7 @@ CTxMemPoolEntry::GetPriority(unsigned int currentHeight) const void CTxMemPoolEntry::UpdateFeeDelta(int64_t newFeeDelta) { + nModFeesWithDescendants += newFeeDelta - feeDelta; feeDelta = newFeeDelta; } @@ -114,7 +115,7 @@ bool CTxMemPool::UpdateForDescendants(txiter updateIt, int maxDescendantsToVisit BOOST_FOREACH(txiter cit, setAllDescendants) { if (!setExclude.count(cit->GetTx().GetHash())) { modifySize += cit->GetTxSize(); - modifyFee += cit->GetFee(); + modifyFee += cit->GetModifiedFee(); modifyCount++; cachedDescendants[updateIt].insert(cit); } @@ -244,7 +245,7 @@ void CTxMemPool::UpdateAncestorsOf(bool add, txiter it, setEntries &setAncestors } const int64_t updateCount = (add ? 1 : -1); const int64_t updateSize = updateCount * it->GetTxSize(); - const CAmount updateFee = updateCount * it->GetFee(); + const CAmount updateFee = updateCount * it->GetModifiedFee(); BOOST_FOREACH(txiter ancestorIt, setAncestors) { mapTx.modify(ancestorIt, update_descendant_state(updateSize, updateFee, updateCount)); } @@ -304,7 +305,7 @@ void CTxMemPoolEntry::SetDirty() { nCountWithDescendants = 0; nSizeWithDescendants = nTxSize; - nFeesWithDescendants = nFee; + nModFeesWithDescendants = GetModifiedFee(); } void CTxMemPoolEntry::UpdateState(int64_t modifySize, CAmount modifyFee, int64_t modifyCount) @@ -312,8 +313,7 @@ void CTxMemPoolEntry::UpdateState(int64_t modifySize, CAmount modifyFee, int64_t if (!IsDirty()) { nSizeWithDescendants += modifySize; assert(int64_t(nSizeWithDescendants) > 0); - nFeesWithDescendants += modifyFee; - assert(nFeesWithDescendants >= 0); + nModFeesWithDescendants += modifyFee; nCountWithDescendants += modifyCount; assert(int64_t(nCountWithDescendants) > 0); } @@ -372,6 +372,17 @@ bool CTxMemPool::addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, indexed_transaction_set::iterator newit = mapTx.insert(entry).first; mapLinks.insert(make_pair(newit, TxLinks())); + // Update transaction for any feeDelta created by PrioritiseTransaction + // TODO: refactor so that the fee delta is calculated before inserting + // into mapTx. + std::map >::const_iterator pos = mapDeltas.find(hash); + if (pos != mapDeltas.end()) { + const std::pair &deltas = pos->second; + if (deltas.second) { + mapTx.modify(newit, update_fee_delta(deltas.second)); + } + } + // Update cachedInnerUsage to include contained transaction's usage. // (When we update the entry for in-mempool parents, memory usage will be // further updated.) @@ -399,15 +410,6 @@ bool CTxMemPool::addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, } UpdateAncestorsOf(true, newit, setAncestors); - // Update transaction's score for any feeDelta created by PrioritiseTransaction - std::map >::const_iterator pos = mapDeltas.find(hash); - if (pos != mapDeltas.end()) { - const std::pair &deltas = pos->second; - if (deltas.second) { - mapTx.modify(newit, update_fee_delta(deltas.second)); - } - } - nTransactionsUpdated++; totalTxSize += entry.GetTxSize(); minerPolicyEstimator->processTransaction(entry, fCurrentEstimate); @@ -644,27 +646,24 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const CTxMemPool::setEntries setChildrenCheck; std::map::const_iterator iter = mapNextTx.lower_bound(COutPoint(it->GetTx().GetHash(), 0)); int64_t childSizes = 0; - CAmount childFees = 0; + CAmount childModFee = 0; for (; iter != mapNextTx.end() && iter->first.hash == it->GetTx().GetHash(); ++iter) { txiter childit = mapTx.find(iter->second.ptx->GetHash()); assert(childit != mapTx.end()); // mapNextTx points to in-mempool transactions if (setChildrenCheck.insert(childit).second) { childSizes += childit->GetTxSize(); - childFees += childit->GetFee(); + childModFee += childit->GetModifiedFee(); } } assert(setChildrenCheck == GetMemPoolChildren(it)); - // Also check to make sure size/fees is greater than sum with immediate children. + // Also check to make sure size is greater than sum with immediate children. // just a sanity check, not definitive that this calc is correct... - // also check that the size is less than the size of the entire mempool. if (!it->IsDirty()) { assert(it->GetSizeWithDescendants() >= childSizes + it->GetTxSize()); - assert(it->GetFeesWithDescendants() >= childFees + it->GetFee()); } else { assert(it->GetSizeWithDescendants() == it->GetTxSize()); - assert(it->GetFeesWithDescendants() == it->GetFee()); + assert(it->GetModFeesWithDescendants() == it->GetModifiedFee()); } - assert(it->GetFeesWithDescendants() >= 0); if (fDependsWait) waitingOnDependants.push_back(&(*it)); @@ -788,6 +787,14 @@ void CTxMemPool::PrioritiseTransaction(const uint256 hash, const string strHash, txiter it = mapTx.find(hash); if (it != mapTx.end()) { mapTx.modify(it, update_fee_delta(deltas.second)); + // Now update all ancestors' modified fees with descendants + setEntries setAncestors; + uint64_t nNoLimit = std::numeric_limits::max(); + std::string dummy; + CalculateMemPoolAncestors(*it, setAncestors, nNoLimit, nNoLimit, nNoLimit, nNoLimit, dummy, false); + BOOST_FOREACH(txiter ancestorIt, setAncestors) { + mapTx.modify(ancestorIt, update_descendant_state(0, nFeeDelta, 0)); + } } } LogPrintf("PrioritiseTransaction: %s priority += %f, fee += %d\n", strHash, dPriorityDelta, FormatMoney(nFeeDelta)); @@ -956,7 +963,7 @@ void CTxMemPool::TrimToSize(size_t sizelimit, std::vector* pvNoSpendsRe // "minimum reasonable fee rate" (ie some value under which we consider txn // to have 0 fee). This way, we don't allow txn to enter mempool with feerate // equal to txn which were removed with no block in between. - CFeeRate removed(it->GetFeesWithDescendants(), it->GetSizeWithDescendants()); + CFeeRate removed(it->GetModFeesWithDescendants(), it->GetSizeWithDescendants()); removed += minReasonableRelayFee; trackPackageRemoved(removed); maxFeeRateRemoved = std::max(maxFeeRateRemoved, removed); diff --git a/src/txmempool.h b/src/txmempool.h index 920317186..4b726cc90 100644 --- a/src/txmempool.h +++ b/src/txmempool.h @@ -44,12 +44,12 @@ class CTxMemPool; * ("descendant" transactions). * * When a new entry is added to the mempool, we update the descendant state - * (nCountWithDescendants, nSizeWithDescendants, and nFeesWithDescendants) for + * (nCountWithDescendants, nSizeWithDescendants, and nModFeesWithDescendants) for * all ancestors of the newly added transaction. * * If updating the descendant state is skipped, we can mark the entry as - * "dirty", and set nSizeWithDescendants/nFeesWithDescendants to equal nTxSize/ - * nTxFee. (This can potentially happen during a reorg, where we limit the + * "dirty", and set nSizeWithDescendants/nModFeesWithDescendants to equal nTxSize/ + * nFee+feeDelta. (This can potentially happen during a reorg, where we limit the * amount of work we're willing to do to avoid consuming too much CPU.) * */ @@ -74,11 +74,11 @@ private: // Information about descendants of this transaction that are in the // mempool; if we remove this transaction we must remove all of these // descendants as well. if nCountWithDescendants is 0, treat this entry as - // dirty, and nSizeWithDescendants and nFeesWithDescendants will not be + // dirty, and nSizeWithDescendants and nModFeesWithDescendants will not be // correct. uint64_t nCountWithDescendants; //! number of descendant transactions uint64_t nSizeWithDescendants; //! ... and size - CAmount nFeesWithDescendants; //! ... and total fees (all including us) + CAmount nModFeesWithDescendants; //! ... and total fees (all including us) public: CTxMemPoolEntry(const CTransaction& _tx, const CAmount& _nFee, @@ -104,7 +104,8 @@ public: // Adjusts the descendant state, if this entry is not dirty. void UpdateState(int64_t modifySize, CAmount modifyFee, int64_t modifyCount); - // Updates the fee delta used for mining priority score + // Updates the fee delta used for mining priority score, and the + // modified fees with descendants. void UpdateFeeDelta(int64_t feeDelta); /** We can set the entry to be dirty if doing the full calculation of in- @@ -116,7 +117,7 @@ public: uint64_t GetCountWithDescendants() const { return nCountWithDescendants; } uint64_t GetSizeWithDescendants() const { return nSizeWithDescendants; } - CAmount GetFeesWithDescendants() const { return nFeesWithDescendants; } + CAmount GetModFeesWithDescendants() const { return nModFeesWithDescendants; } bool GetSpendsCoinbase() const { return spendsCoinbase; } }; @@ -163,27 +164,27 @@ struct mempoolentry_txid } }; -/** \class CompareTxMemPoolEntryByFee +/** \class CompareTxMemPoolEntryByDescendantScore * - * Sort an entry by max(feerate of entry's tx, feerate with all descendants). + * Sort an entry by max(score/size of entry's tx, score/size with all descendants). */ -class CompareTxMemPoolEntryByFee +class CompareTxMemPoolEntryByDescendantScore { public: bool operator()(const CTxMemPoolEntry& a, const CTxMemPoolEntry& b) { - bool fUseADescendants = UseDescendantFeeRate(a); - bool fUseBDescendants = UseDescendantFeeRate(b); + bool fUseADescendants = UseDescendantScore(a); + bool fUseBDescendants = UseDescendantScore(b); - double aFees = fUseADescendants ? a.GetFeesWithDescendants() : a.GetFee(); + double aModFee = fUseADescendants ? a.GetModFeesWithDescendants() : a.GetModifiedFee(); double aSize = fUseADescendants ? a.GetSizeWithDescendants() : a.GetTxSize(); - double bFees = fUseBDescendants ? b.GetFeesWithDescendants() : b.GetFee(); + double bModFee = fUseBDescendants ? b.GetModFeesWithDescendants() : b.GetModifiedFee(); double bSize = fUseBDescendants ? b.GetSizeWithDescendants() : b.GetTxSize(); // Avoid division by rewriting (a/b > c/d) as (a*d > c*b). - double f1 = aFees * bSize; - double f2 = aSize * bFees; + double f1 = aModFee * bSize; + double f2 = aSize * bModFee; if (f1 == f2) { return a.GetTime() >= b.GetTime(); @@ -191,11 +192,11 @@ public: return f1 < f2; } - // Calculate which feerate to use for an entry (avoiding division). - bool UseDescendantFeeRate(const CTxMemPoolEntry &a) + // Calculate which score to use for an entry (avoiding division). + bool UseDescendantScore(const CTxMemPoolEntry &a) { - double f1 = (double)a.GetFee() * a.GetSizeWithDescendants(); - double f2 = (double)a.GetFeesWithDescendants() * a.GetTxSize(); + double f1 = (double)a.GetModifiedFee() * a.GetSizeWithDescendants(); + double f2 = (double)a.GetModFeesWithDescendants() * a.GetTxSize(); return f2 > f1; } }; @@ -350,7 +351,7 @@ public: // sorted by fee rate boost::multi_index::ordered_non_unique< boost::multi_index::identity, - CompareTxMemPoolEntryByFee + CompareTxMemPoolEntryByDescendantScore >, // sorted by entry time boost::multi_index::ordered_non_unique<