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Keep shared_ptrs to recently-replaced txn for compact blocks

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This commit is contained in:
Matt Corallo 2017-01-09 14:38:06 -05:00
parent edded808fc
commit 1531652e02
3 changed files with 25 additions and 2 deletions
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1
src/init.cpp
View file

@ -346,6 +346,7 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageOpt("-maxorphantx=<n>", strprintf(_("Keep at most <n> unconnectable transactions in memory (default: %u)"), DEFAULT_MAX_ORPHAN_TRANSACTIONS));
strUsage += HelpMessageOpt("-maxmempool=<n>", strprintf(_("Keep the transaction memory pool below <n> megabytes (default: %u)"), DEFAULT_MAX_MEMPOOL_SIZE));
strUsage += HelpMessageOpt("-mempoolexpiry=<n>", strprintf(_("Do not keep transactions in the mempool longer than <n> hours (default: %u)"), DEFAULT_MEMPOOL_EXPIRY));
strUsage += HelpMessageOpt("-blockreconstructionextratxn=<n>", strprintf(_("Extra transactions to keep in memory for compact block reconstructions (default: %u)"), DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN));
strUsage += HelpMessageOpt("-par=<n>", strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"),
-GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));
#ifndef WIN32

24
src/net_processing.cpp
View file

@ -59,6 +59,9 @@ map<uint256, COrphanTx> mapOrphanTransactions GUARDED_BY(cs_main);
map<COutPoint, set<map<uint256, COrphanTx>::iterator, IteratorComparator>> mapOrphanTransactionsByPrev GUARDED_BY(cs_main);
void EraseOrphansFor(NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
static size_t vExtraTxnForCompactIt = 0;
static std::vector<std::pair<uint256, CTransactionRef>> vExtraTxnForCompact GUARDED_BY(cs_main);
static const uint64_t RANDOMIZER_ID_ADDRESS_RELAY = 0x3cac0035b5866b90ULL; // SHA256("main address relay")[0:8]
// Internal stuff
@ -586,6 +589,17 @@ void UnregisterNodeSignals(CNodeSignals& nodeSignals)
// mapOrphanTransactions
//
void AddToCompactExtraTransactions(const CTransactionRef& tx)
{
size_t max_extra_txn = GetArg("-blockreconstructionextratxn", DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN);
if (max_extra_txn <= 0)
return;
if (!vExtraTxnForCompact.size())
vExtraTxnForCompact.resize(max_extra_txn);
vExtraTxnForCompact[vExtraTxnForCompactIt] = std::make_pair(tx->GetWitnessHash(), tx);
vExtraTxnForCompactIt = (vExtraTxnForCompactIt + 1) % max_extra_txn;
}
bool AddOrphanTx(const CTransactionRef& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
{
const uint256& hash = tx->GetHash();
@ -1615,7 +1629,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
pfrom->setAskFor.erase(inv.hash);
mapAlreadyAskedFor.erase(inv.hash);
if (!AlreadyHave(inv) && AcceptToMemoryPool(mempool, state, ptx, true, &fMissingInputs)) {
std::list<CTransactionRef> lRemovedTxn;
if (!AlreadyHave(inv) && AcceptToMemoryPool(mempool, state, ptx, true, &fMissingInputs, &lRemovedTxn)) {
mempool.check(pcoinsTip);
RelayTransaction(tx, connman);
for (unsigned int i = 0; i < tx.vout.size(); i++) {
@ -1653,7 +1669,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
if (setMisbehaving.count(fromPeer))
continue;
if (AcceptToMemoryPool(mempool, stateDummy, porphanTx, true, &fMissingInputs2)) {
if (AcceptToMemoryPool(mempool, stateDummy, porphanTx, true, &fMissingInputs2, &lRemovedTxn)) {
LogPrint("mempool", " accepted orphan tx %s\n", orphanHash.ToString());
RelayTransaction(orphanTx, connman);
for (unsigned int i = 0; i < orphanTx.vout.size(); i++) {
@ -1743,6 +1759,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
}
}
}
for (const CTransactionRef& tx : lRemovedTxn)
AddToCompactExtraTransactions(tx);
int nDoS = 0;
if (state.IsInvalid(nDoS))
{

2
src/net_processing.h
View file

@ -15,6 +15,8 @@ static const unsigned int DEFAULT_MAX_ORPHAN_TRANSACTIONS = 100;
static const int64_t ORPHAN_TX_EXPIRE_TIME = 20 * 60;
/** Minimum time between orphan transactions expire time checks in seconds */
static const int64_t ORPHAN_TX_EXPIRE_INTERVAL = 5 * 60;
/** Default number of orphan+recently-replaced txn to keep around for block reconstruction */
static const unsigned int DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN = 100;
/** Register with a network node to receive its signals */
void RegisterNodeSignals(CNodeSignals& nodeSignals);