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Merge #10557: Make check to distinguish between orphan txs and old txs more efficient.

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18bacec6c Make check to distinguish between orphan txs and old txs more efficient. (Alex Morcos)

Tree-SHA512: b6b4bad89aa561975dce7b68b2fdad5623af5ebcb9c38fd6a72b5f6d0544ed441df4865591ac018f7ae0df9b5c60820cb4d9e55664f5667c9268458df70fd554
This commit is contained in:
Pieter Wuille 2017-07-14 11:54:09 -07:00
commit 66270a416e
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1 changed files with 8 additions and 12 deletions
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20
src/validation.cpp
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@ -532,24 +532,20 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
CCoinsViewMemPool viewMemPool(pcoinsTip, pool);
view.SetBackend(viewMemPool);
// do we already have it?
for (size_t out = 0; out < tx.vout.size(); out++) {
COutPoint outpoint(hash, out);
bool had_coin_in_cache = pcoinsTip->HaveCoinInCache(outpoint);
if (view.HaveCoin(outpoint)) {
if (!had_coin_in_cache) {
coins_to_uncache.push_back(outpoint);
}
return state.Invalid(false, REJECT_DUPLICATE, "txn-already-known");
}
}
// do all inputs exist?
for (const CTxIn txin : tx.vin) {
if (!pcoinsTip->HaveCoinInCache(txin.prevout)) {
coins_to_uncache.push_back(txin.prevout);
}
if (!view.HaveCoin(txin.prevout)) {
// Are inputs missing because we already have the tx?
for (size_t out = 0; out < tx.vout.size(); out++) {
// Optimistically just do efficient check of cache for outputs
if (pcoinsTip->HaveCoinInCache(COutPoint(hash, out))) {
return state.Invalid(false, REJECT_DUPLICATE, "txn-already-known");
}
}
// Otherwise assume this might be an orphan tx for which we just haven't seen parents yet
if (pfMissingInputs) {
*pfMissingInputs = true;
}