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Merge pull request #7062
901b01dRemove GetMinRelayFee (Suhas Daftuar)27fae34Use fee deltas for determining mempool acceptance (Suhas Daftuar)9ef2a25Update replace-by-fee logic to use fee deltas (Suhas Daftuar)eb30666Fix mempool limiting for PrioritiseTransaction (Suhas Daftuar)
This commit is contained in:
Wladimir J. van der Laan
commit
c24337964f
@ -64,17 +64,41 @@ class MempoolPackagesTest(BitcoinTestFramework):
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for x in reversed(chain):
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assert_equal(mempool[x]['descendantcount'], descendant_count)
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descendant_fees += mempool[x]['fee']
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assert_equal(mempool[x]['modifiedfee'], mempool[x]['fee'])
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assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees)
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descendant_size += mempool[x]['size']
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assert_equal(mempool[x]['descendantsize'], descendant_size)
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descendant_count += 1
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# Check that descendant modified fees includes fee deltas from
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# prioritisetransaction
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self.nodes[0].prioritisetransaction(chain[-1], 0, 1000)
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mempool = self.nodes[0].getrawmempool(True)
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descendant_fees = 0
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for x in reversed(chain):
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descendant_fees += mempool[x]['fee']
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assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees+1000)
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# Adding one more transaction on to the chain should fail.
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try:
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self.chain_transaction(self.nodes[0], txid, vout, value, fee, 1)
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except JSONRPCException as e:
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print "too-long-ancestor-chain successfully rejected"
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# Check that prioritising a tx before it's added to the mempool works
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self.nodes[0].generate(1)
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self.nodes[0].prioritisetransaction(chain[-1], 0, 2000)
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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mempool = self.nodes[0].getrawmempool(True)
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descendant_fees = 0
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for x in reversed(chain):
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descendant_fees += mempool[x]['fee']
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if (x == chain[-1]):
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assert_equal(mempool[x]['modifiedfee'], mempool[x]['fee']+satoshi_round(0.00002))
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assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees+2000)
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# TODO: check that node1's mempool is as expected
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# TODO: test ancestor size limits
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@ -143,5 +143,45 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
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if (x != high_fee_tx):
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assert(x not in mempool)
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# Create a free, low priority transaction. Should be rejected.
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utxo_list = self.nodes[0].listunspent()
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assert(len(utxo_list) > 0)
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utxo = utxo_list[0]
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inputs = []
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outputs = {}
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inputs.append({"txid" : utxo["txid"], "vout" : utxo["vout"]})
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outputs[self.nodes[0].getnewaddress()] = utxo["amount"] - self.relayfee
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raw_tx = self.nodes[0].createrawtransaction(inputs, outputs)
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tx_hex = self.nodes[0].signrawtransaction(raw_tx)["hex"]
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txid = self.nodes[0].sendrawtransaction(tx_hex)
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# A tx that spends an in-mempool tx has 0 priority, so we can use it to
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# test the effect of using prioritise transaction for mempool acceptance
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inputs = []
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inputs.append({"txid": txid, "vout": 0})
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outputs = {}
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outputs[self.nodes[0].getnewaddress()] = utxo["amount"] - self.relayfee
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raw_tx2 = self.nodes[0].createrawtransaction(inputs, outputs)
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tx2_hex = self.nodes[0].signrawtransaction(raw_tx2)["hex"]
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tx2_id = self.nodes[0].decoderawtransaction(tx2_hex)["txid"]
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try:
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self.nodes[0].sendrawtransaction(tx2_hex)
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except JSONRPCException as exp:
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assert_equal(exp.error['code'], -26) # insufficient fee
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assert(tx2_id not in self.nodes[0].getrawmempool())
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else:
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assert(False)
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# This is a less than 1000-byte transaction, so just set the fee
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# to be the minimum for a 1000 byte transaction and check that it is
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# accepted.
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self.nodes[0].prioritisetransaction(tx2_id, 0, int(self.relayfee*COIN))
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print "Assert that prioritised free transaction is accepted to mempool"
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assert_equal(self.nodes[0].sendrawtransaction(tx2_hex), tx2_id)
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assert(tx2_id in self.nodes[0].getrawmempool())
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if __name__ == '__main__':
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PrioritiseTransactionTest().main()
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@ -63,8 +63,14 @@ def make_utxo(node, amount, confirmed=True, scriptPubKey=CScript([1])):
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# If requested, ensure txouts are confirmed.
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if confirmed:
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while len(node.getrawmempool()):
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mempool_size = len(node.getrawmempool())
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while mempool_size > 0:
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node.generate(1)
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new_size = len(node.getrawmempool())
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# Error out if we have something stuck in the mempool, as this
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# would likely be a bug.
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assert(new_size < mempool_size)
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mempool_size = new_size
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return COutPoint(int(txid, 16), 0)
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@ -72,7 +78,7 @@ class ReplaceByFeeTest(BitcoinTestFramework):
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def setup_network(self):
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self.nodes = []
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self.nodes.append(start_node(0, self.options.tmpdir, ["-maxorphantx=1000",
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self.nodes.append(start_node(0, self.options.tmpdir, ["-maxorphantx=1000", "-debug",
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"-relaypriority=0", "-whitelist=127.0.0.1",
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"-limitancestorcount=50",
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"-limitancestorsize=101",
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@ -108,6 +114,9 @@ class ReplaceByFeeTest(BitcoinTestFramework):
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print "Running test opt-in..."
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self.test_opt_in()
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print "Running test prioritised transactions..."
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self.test_prioritised_transactions()
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print "Passed\n"
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def test_simple_doublespend(self):
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@ -513,5 +522,72 @@ class ReplaceByFeeTest(BitcoinTestFramework):
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# but make sure it is accepted anyway
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self.nodes[0].sendrawtransaction(tx3c_hex, True)
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def test_prioritised_transactions(self):
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# Ensure that fee deltas used via prioritisetransaction are
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# correctly used by replacement logic
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# 1. Check that feeperkb uses modified fees
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tx0_outpoint = make_utxo(self.nodes[0], 1.1*COIN)
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tx1a = CTransaction()
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tx1a.vin = [CTxIn(tx0_outpoint, nSequence=0)]
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tx1a.vout = [CTxOut(1*COIN, CScript([b'a']))]
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tx1a_hex = txToHex(tx1a)
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tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, True)
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# Higher fee, but the actual fee per KB is much lower.
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tx1b = CTransaction()
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tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)]
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tx1b.vout = [CTxOut(0.001*COIN, CScript([b'a'*740000]))]
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tx1b_hex = txToHex(tx1b)
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# Verify tx1b cannot replace tx1a.
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try:
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tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, True)
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except JSONRPCException as exp:
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assert_equal(exp.error['code'], -26)
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else:
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assert(False)
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# Use prioritisetransaction to set tx1a's fee to 0.
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self.nodes[0].prioritisetransaction(tx1a_txid, 0, int(-0.1*COIN))
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# Now tx1b should be able to replace tx1a
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tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, True)
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assert(tx1b_txid in self.nodes[0].getrawmempool())
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# 2. Check that absolute fee checks use modified fee.
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tx1_outpoint = make_utxo(self.nodes[0], 1.1*COIN)
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tx2a = CTransaction()
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tx2a.vin = [CTxIn(tx1_outpoint, nSequence=0)]
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tx2a.vout = [CTxOut(1*COIN, CScript([b'a']))]
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tx2a_hex = txToHex(tx2a)
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tx2a_txid = self.nodes[0].sendrawtransaction(tx2a_hex, True)
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# Lower fee, but we'll prioritise it
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tx2b = CTransaction()
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tx2b.vin = [CTxIn(tx1_outpoint, nSequence=0)]
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tx2b.vout = [CTxOut(1.01*COIN, CScript([b'a']))]
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tx2b.rehash()
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tx2b_hex = txToHex(tx2b)
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# Verify tx2b cannot replace tx2a.
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try:
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tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, True)
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except JSONRPCException as exp:
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assert_equal(exp.error['code'], -26)
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else:
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assert(False)
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# Now prioritise tx2b to have a higher modified fee
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self.nodes[0].prioritisetransaction(tx2b.hash, 0, int(0.1*COIN))
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# tx2b should now be accepted
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tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, True)
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assert(tx2b_txid in self.nodes[0].getrawmempool())
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if __name__ == '__main__':
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ReplaceByFeeTest().main()
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57
src/main.cpp
57
src/main.cpp
@ -800,32 +800,6 @@ void LimitMempoolSize(CTxMemPool& pool, size_t limit, unsigned long age) {
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pcoinsTip->Uncache(removed);
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}
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CAmount GetMinRelayFee(const CTransaction& tx, const CTxMemPool& pool, unsigned int nBytes, bool fAllowFree)
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{
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uint256 hash = tx.GetHash();
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double dPriorityDelta = 0;
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CAmount nFeeDelta = 0;
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pool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta);
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if (dPriorityDelta > 0 || nFeeDelta > 0)
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return 0;
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CAmount nMinFee = ::minRelayTxFee.GetFee(nBytes);
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if (fAllowFree)
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{
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// There is a free transaction area in blocks created by most miners,
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// * If we are relaying we allow transactions up to DEFAULT_BLOCK_PRIORITY_SIZE - 1000
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// to be considered to fall into this category. We don't want to encourage sending
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// multiple transactions instead of one big transaction to avoid fees.
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if (nBytes < (DEFAULT_BLOCK_PRIORITY_SIZE - 1000))
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nMinFee = 0;
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}
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if (!MoneyRange(nMinFee))
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nMinFee = MAX_MONEY;
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return nMinFee;
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}
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/** Convert CValidationState to a human-readable message for logging */
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std::string FormatStateMessage(const CValidationState &state)
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{
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@ -968,6 +942,11 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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CAmount nValueOut = tx.GetValueOut();
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CAmount nFees = nValueIn-nValueOut;
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// nModifiedFees includes any fee deltas from PrioritiseTransaction
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CAmount nModifiedFees = nFees;
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double nPriorityDummy = 0;
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pool.ApplyDeltas(hash, nPriorityDummy, nModifiedFees);
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CAmount inChainInputValue;
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double dPriority = view.GetPriority(tx, chainActive.Height(), inChainInputValue);
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@ -985,16 +964,10 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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CTxMemPoolEntry entry(tx, nFees, GetTime(), dPriority, chainActive.Height(), pool.HasNoInputsOf(tx), inChainInputValue, fSpendsCoinbase, nSigOps);
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unsigned int nSize = entry.GetTxSize();
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// Don't accept it if it can't get into a block
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CAmount txMinFee = GetMinRelayFee(tx, pool, nSize, true);
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if (fLimitFree && nFees < txMinFee)
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return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "insufficient fee", false,
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strprintf("%d < %d", nFees, txMinFee));
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CAmount mempoolRejectFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFee(nSize);
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if (mempoolRejectFee > 0 && nFees < mempoolRejectFee) {
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if (mempoolRejectFee > 0 && nModifiedFees < mempoolRejectFee) {
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return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "mempool min fee not met", false, strprintf("%d < %d", nFees, mempoolRejectFee));
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} else if (GetBoolArg("-relaypriority", DEFAULT_RELAYPRIORITY) && nFees < ::minRelayTxFee.GetFee(nSize) && !AllowFree(entry.GetPriority(chainActive.Height() + 1))) {
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} else if (GetBoolArg("-relaypriority", DEFAULT_RELAYPRIORITY) && nModifiedFees < ::minRelayTxFee.GetFee(nSize) && !AllowFree(entry.GetPriority(chainActive.Height() + 1))) {
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// Require that free transactions have sufficient priority to be mined in the next block.
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return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "insufficient priority");
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}
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@ -1002,7 +975,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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// Continuously rate-limit free (really, very-low-fee) transactions
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// This mitigates 'penny-flooding' -- sending thousands of free transactions just to
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// be annoying or make others' transactions take longer to confirm.
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if (fLimitFree && nFees < ::minRelayTxFee.GetFee(nSize))
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if (fLimitFree && nModifiedFees < ::minRelayTxFee.GetFee(nSize))
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{
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static CCriticalSection csFreeLimiter;
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static double dFreeCount;
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@ -1067,7 +1040,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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LOCK(pool.cs);
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if (setConflicts.size())
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{
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CFeeRate newFeeRate(nFees, nSize);
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CFeeRate newFeeRate(nModifiedFees, nSize);
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set<uint256> setConflictsParents;
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const int maxDescendantsToVisit = 100;
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CTxMemPool::setEntries setIterConflicting;
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@ -1110,7 +1083,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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// ignored when deciding whether or not to replace, we do
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// require the replacement to pay more overall fees too,
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// mitigating most cases.
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CFeeRate oldFeeRate(mi->GetFee(), mi->GetTxSize());
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CFeeRate oldFeeRate(mi->GetModifiedFee(), mi->GetTxSize());
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if (newFeeRate <= oldFeeRate)
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{
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return state.DoS(0,
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@ -1138,7 +1111,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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pool.CalculateDescendants(it, allConflicting);
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}
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BOOST_FOREACH(CTxMemPool::txiter it, allConflicting) {
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nConflictingFees += it->GetFee();
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nConflictingFees += it->GetModifiedFee();
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nConflictingSize += it->GetTxSize();
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}
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} else {
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@ -1171,16 +1144,16 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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// The replacement must pay greater fees than the transactions it
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// replaces - if we did the bandwidth used by those conflicting
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// transactions would not be paid for.
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if (nFees < nConflictingFees)
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if (nModifiedFees < nConflictingFees)
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{
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return state.DoS(0, error("AcceptToMemoryPool: rejecting replacement %s, less fees than conflicting txs; %s < %s",
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hash.ToString(), FormatMoney(nFees), FormatMoney(nConflictingFees)),
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hash.ToString(), FormatMoney(nModifiedFees), FormatMoney(nConflictingFees)),
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REJECT_INSUFFICIENTFEE, "insufficient fee");
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}
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// Finally in addition to paying more fees than the conflicts the
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// new transaction must pay for its own bandwidth.
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CAmount nDeltaFees = nFees - nConflictingFees;
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CAmount nDeltaFees = nModifiedFees - nConflictingFees;
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if (nDeltaFees < ::minRelayTxFee.GetFee(nSize))
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{
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return state.DoS(0,
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@ -1218,7 +1191,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
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LogPrint("mempool", "replacing tx %s with %s for %s BTC additional fees, %d delta bytes\n",
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it->GetTx().GetHash().ToString(),
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hash.ToString(),
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FormatMoney(nFees - nConflictingFees),
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FormatMoney(nModifiedFees - nConflictingFees),
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(int)nSize - (int)nConflictingSize);
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}
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pool.RemoveStaged(allConflicting);
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@ -300,8 +300,6 @@ struct CDiskTxPos : public CDiskBlockPos
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};
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CAmount GetMinRelayFee(const CTransaction& tx, unsigned int nBytes, bool fAllowFree);
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/**
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* Count ECDSA signature operations the old-fashioned (pre-0.6) way
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* @return number of sigops this transaction's outputs will produce when spent
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@ -197,7 +197,7 @@ UniValue mempoolToJSON(bool fVerbose = false)
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info.push_back(Pair("currentpriority", e.GetPriority(chainActive.Height())));
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info.push_back(Pair("descendantcount", e.GetCountWithDescendants()));
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info.push_back(Pair("descendantsize", e.GetSizeWithDescendants()));
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info.push_back(Pair("descendantfees", e.GetFeesWithDescendants()));
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info.push_back(Pair("descendantfees", e.GetModFeesWithDescendants()));
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const CTransaction& tx = e.GetTx();
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set<string> setDepends;
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BOOST_FOREACH(const CTxIn& txin, tx.vin)
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@ -255,7 +255,7 @@ UniValue getrawmempool(const UniValue& params, bool fHelp)
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" \"currentpriority\" : n, (numeric) transaction priority now\n"
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" \"descendantcount\" : n, (numeric) number of in-mempool descendant transactions (including this one)\n"
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" \"descendantsize\" : n, (numeric) size of in-mempool descendants (including this one)\n"
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" \"descendantfees\" : n, (numeric) fees of in-mempool descendants (including this one)\n"
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" \"descendantfees\" : n, (numeric) modified fees (see above) of in-mempool descendants (including this one)\n"
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" \"depends\" : [ (array) unconfirmed transactions used as inputs for this transaction\n"
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" \"transactionid\", (string) parent transaction id\n"
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" ... ]\n"
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@ -33,7 +33,7 @@ CTxMemPoolEntry::CTxMemPoolEntry(const CTransaction& _tx, const CAmount& _nFee,
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nCountWithDescendants = 1;
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nSizeWithDescendants = nTxSize;
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nFeesWithDescendants = nFee;
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nModFeesWithDescendants = nFee;
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CAmount nValueIn = tx.GetValueOut()+nFee;
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assert(inChainInputValue <= nValueIn);
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@ -57,6 +57,7 @@ CTxMemPoolEntry::GetPriority(unsigned int currentHeight) const
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void CTxMemPoolEntry::UpdateFeeDelta(int64_t newFeeDelta)
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{
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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<uint256, std::pair<double, CAmount> >::const_iterator pos = mapDeltas.find(hash);
|
||||
if (pos != mapDeltas.end()) {
|
||||
const std::pair<double, CAmount> &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<uint256, std::pair<double, CAmount> >::const_iterator pos = mapDeltas.find(hash);
|
||||
if (pos != mapDeltas.end()) {
|
||||
const std::pair<double, CAmount> &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<COutPoint, CInPoint>::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<uint64_t>::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<uint256>* 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);
|
||||
|
||||
@ -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<CTxMemPoolEntry>,
|
||||
CompareTxMemPoolEntryByFee
|
||||
CompareTxMemPoolEntryByDescendantScore
|
||||
>,
|
||||
// sorted by entry time
|
||||
boost::multi_index::ordered_non_unique<
|
||||
|
||||
Loading…
Reference in New Issue
Block a user