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Add a score index to the mempool.

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The score index is meant to represent the order of priority for being included in a block for miners.  Initially this is set to the transactions modified (by any feeDelta) fee rate.  Index improvements and unit tests by sdaftuar.
This commit is contained in:
Alex Morcos
2015-10-26 14:06:06 -04:00
parent c49d5bc9e6
commit f3fe83673e
4 changed files with 106 additions and 12 deletions
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52
src/test/mempool_tests.cpp
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@@ -102,12 +102,13 @@ BOOST_AUTO_TEST_CASE(MempoolRemoveTest)
removed.clear();
}
template<int index>
void CheckSort(CTxMemPool &pool, std::vector<std::string> &sortedOrder)
{
BOOST_CHECK_EQUAL(pool.size(), sortedOrder.size());
CTxMemPool::indexed_transaction_set::nth_index<1>::type::iterator it = pool.mapTx.get<1>().begin();
typename CTxMemPool::indexed_transaction_set::nth_index<index>::type::iterator it = pool.mapTx.get<index>().begin();
int count=0;
for (; it != pool.mapTx.get<1>().end(); ++it, ++count) {
for (; it != pool.mapTx.get<index>().end(); ++it, ++count) {
BOOST_CHECK_EQUAL(it->GetTx().GetHash().ToString(), sortedOrder[count]);
}
}
@@ -163,7 +164,7 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
sortedOrder[2] = tx1.GetHash().ToString(); // 10000
sortedOrder[3] = tx4.GetHash().ToString(); // 15000
sortedOrder[4] = tx2.GetHash().ToString(); // 20000
CheckSort(pool, sortedOrder);
CheckSort<1>(pool, sortedOrder);
/* low fee but with high fee child */
/* tx6 -> tx7 -> tx8, tx9 -> tx10 */
@@ -175,7 +176,7 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
BOOST_CHECK_EQUAL(pool.size(), 6);
// Check that at this point, tx6 is sorted low
sortedOrder.insert(sortedOrder.begin(), tx6.GetHash().ToString());
CheckSort(pool, sortedOrder);
CheckSort<1>(pool, sortedOrder);
CTxMemPool::setEntries setAncestors;
setAncestors.insert(pool.mapTx.find(tx6.GetHash()));
@@ -201,7 +202,7 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
sortedOrder.erase(sortedOrder.begin());
sortedOrder.push_back(tx6.GetHash().ToString());
sortedOrder.push_back(tx7.GetHash().ToString());
CheckSort(pool, sortedOrder);
CheckSort<1>(pool, sortedOrder);
/* low fee child of tx7 */
CMutableTransaction tx8 = CMutableTransaction();
@@ -216,7 +217,7 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
// Now tx8 should be sorted low, but tx6/tx both high
sortedOrder.insert(sortedOrder.begin(), tx8.GetHash().ToString());
CheckSort(pool, sortedOrder);
CheckSort<1>(pool, sortedOrder);
/* low fee child of tx7 */
CMutableTransaction tx9 = CMutableTransaction();
@@ -231,7 +232,7 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
// tx9 should be sorted low
BOOST_CHECK_EQUAL(pool.size(), 9);
sortedOrder.insert(sortedOrder.begin(), tx9.GetHash().ToString());
CheckSort(pool, sortedOrder);
CheckSort<1>(pool, sortedOrder);
std::vector<std::string> snapshotOrder = sortedOrder;
@@ -273,7 +274,7 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
sortedOrder.insert(sortedOrder.begin()+5, tx9.GetHash().ToString());
sortedOrder.insert(sortedOrder.begin()+6, tx8.GetHash().ToString());
sortedOrder.insert(sortedOrder.begin()+7, tx10.GetHash().ToString()); // tx10 is just before tx6
CheckSort(pool, sortedOrder);
CheckSort<1>(pool, sortedOrder);
// there should be 10 transactions in the mempool
BOOST_CHECK_EQUAL(pool.size(), 10);
@@ -281,9 +282,42 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
// Now try removing tx10 and verify the sort order returns to normal
std::list<CTransaction> removed;
pool.remove(pool.mapTx.find(tx10.GetHash())->GetTx(), removed, true);
CheckSort(pool, snapshotOrder);
CheckSort<1>(pool, snapshotOrder);
pool.remove(pool.mapTx.find(tx9.GetHash())->GetTx(), removed, true);
pool.remove(pool.mapTx.find(tx8.GetHash())->GetTx(), removed, true);
/* Now check the sort on the mining score index.
* Final order should be:
*
* tx7 (2M)
* tx2 (20k)
* tx4 (15000)
* tx1/tx5 (10000)
* tx3/6 (0)
* (Ties resolved by hash)
*/
sortedOrder.clear();
sortedOrder.push_back(tx7.GetHash().ToString());
sortedOrder.push_back(tx2.GetHash().ToString());
sortedOrder.push_back(tx4.GetHash().ToString());
if (tx1.GetHash() < tx5.GetHash()) {
sortedOrder.push_back(tx5.GetHash().ToString());
sortedOrder.push_back(tx1.GetHash().ToString());
} else {
sortedOrder.push_back(tx1.GetHash().ToString());
sortedOrder.push_back(tx5.GetHash().ToString());
}
if (tx3.GetHash() < tx6.GetHash()) {
sortedOrder.push_back(tx6.GetHash().ToString());
sortedOrder.push_back(tx3.GetHash().ToString());
} else {
sortedOrder.push_back(tx3.GetHash().ToString());
sortedOrder.push_back(tx6.GetHash().ToString());
}
CheckSort<3>(pool, sortedOrder);
}
BOOST_AUTO_TEST_CASE(MempoolSizeLimitTest)
{
CTxMemPool pool(CFeeRate(1000));