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[mempool] simplify some check() logic

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No transaction in the mempool should ever be a coinbase.

Since mempoolDuplicate's backend is the chainstate coins view, it should
always contain the coins available.
This commit is contained in:
glozow 2021-10-04 12:58:50 +01:00
parent 9e8d7ad5d9
commit ed6115f1ea
1 changed files with 6 additions and 8 deletions
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14
src/txmempool.cpp
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@ -704,14 +704,12 @@ void CTxMemPool::check(CChainState& active_chainstate) const
if (it2 != mapTx.end()) {
const CTransaction& tx2 = it2->GetTx();
assert(tx2.vout.size() > txin.prevout.n && !tx2.vout[txin.prevout.n].IsNull());
// We are iterating through the mempool entries sorted in order by ancestor count.
// All parents must have been checked before their children and their coins added to
// the mempoolDuplicate coins cache.
assert(mempoolDuplicate.HaveCoin(txin.prevout));
setParentCheck.insert(*it2);
} else {
assert(active_coins_tip.HaveCoin(txin.prevout));
}
// We are iterating through the mempool entries sorted in order by ancestor count.
// All parents must have been checked before their children and their coins added to
// the mempoolDuplicate coins cache.
assert(mempoolDuplicate.HaveCoin(txin.prevout));
// Check whether its inputs are marked in mapNextTx.
auto it3 = mapNextTx.find(txin.prevout);
assert(it3 != mapNextTx.end());
@ -766,8 +764,8 @@ void CTxMemPool::check(CChainState& active_chainstate) const
TxValidationState dummy_state; // Not used. CheckTxInputs() should always pass
CAmount txfee = 0;
bool fCheckResult = tx.IsCoinBase() || Consensus::CheckTxInputs(tx, dummy_state, mempoolDuplicate, spendheight, txfee);
assert(fCheckResult);
assert(!tx.IsCoinBase());
assert(Consensus::CheckTxInputs(tx, dummy_state, mempoolDuplicate, spendheight, txfee));
for (const auto& input: tx.vin) mempoolDuplicate.SpendCoin(input.prevout);
AddCoins(mempoolDuplicate, tx, std::numeric_limits<int>::max());
}