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This eliminates the primary leak that causes the orphan map to 

always grow to its maximum size.

This does not go so far as to attempt to connect orphans made
 connectable by a new block.

Keeping the orphan map less full helps improve the reliability
 of relaying chains of transactions.
This commit is contained in:
Gregory Maxwell 2016-06-10 20:41:49 +00:00
parent 1b0bcc5f95
commit db0ffe80a0
1 changed files with 21 additions and 0 deletions
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21
src/main.cpp
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@ -2345,6 +2345,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
CCheckQueueControl<CScriptCheck> control(fScriptChecks && nScriptCheckThreads ? &scriptcheckqueue : NULL);
std::vector<uint256> vOrphanErase;
std::vector<int> prevheights;
CAmount nFees = 0;
int nInputs = 0;
@ -2377,6 +2378,17 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
prevheights[j] = view.AccessCoins(tx.vin[j].prevout.hash)->nHeight;
}
// Which orphan pool entries must we evict?
for (size_t j = 0; j < tx.vin.size(); j++) {
auto itByPrev = mapOrphanTransactionsByPrev.find(tx.vin[j].prevout);
if (itByPrev == mapOrphanTransactionsByPrev.end()) continue;
for (auto mi = itByPrev->second.begin(); mi != itByPrev->second.end(); ++mi) {
const CTransaction& orphanTx = (*mi)->second.tx;
const uint256& orphanHash = orphanTx.GetHash();
vOrphanErase.push_back(orphanHash);
}
}
if (!SequenceLocks(tx, nLockTimeFlags, &prevheights, *pindex)) {
return state.DoS(100, error("%s: contains a non-BIP68-final transaction", __func__),
REJECT_INVALID, "bad-txns-nonfinal");
@ -2464,6 +2476,15 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
GetMainSignals().UpdatedTransaction(hashPrevBestCoinBase);
hashPrevBestCoinBase = block.vtx[0].GetHash();
// Erase orphan transactions include or precluded by this block
if (vOrphanErase.size()) {
int nErased = 0;
BOOST_FOREACH(uint256 &orphanHash, vOrphanErase) {
nErased += EraseOrphanTx(orphanHash);
}
LogPrint("mempool", "Erased %d orphan tx included or conflicted by block\n", nErased);
}
int64_t nTime6 = GetTimeMicros(); nTimeCallbacks += nTime6 - nTime5;
LogPrint("bench", " - Callbacks: %.2fms [%.2fs]\n", 0.001 * (nTime6 - nTime5), nTimeCallbacks * 0.000001);