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Make CTxMemPool::check more thourough by using CheckInputs

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This commit is contained in:
Matt Corallo 2014-11-11 21:06:15 -08:00
parent 723d12c098
commit b7b4318f3a
1 changed files with 29 additions and 1 deletions
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30
src/txmempool.cpp
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@ -6,7 +6,7 @@
#include "txmempool.h" #include "txmempool.h"
#include "clientversion.h" #include "clientversion.h"
#include "main.h" // for COINBASE_MATURITY #include "main.h"
#include "streams.h" #include "streams.h"
#include "util.h" #include "util.h"
#include "utilmoneystr.h" #include "utilmoneystr.h"
@ -539,17 +539,22 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
uint64_t checkTotal = 0; uint64_t checkTotal = 0;
CCoinsViewCache mempoolDuplicate(const_cast<CCoinsViewCache*>(pcoins));
LOCK(cs); LOCK(cs);
list<const CTxMemPoolEntry*> waitingOnDependants;
for (std::map<uint256, CTxMemPoolEntry>::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) { for (std::map<uint256, CTxMemPoolEntry>::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) {
unsigned int i = 0; unsigned int i = 0;
checkTotal += it->second.GetTxSize(); checkTotal += it->second.GetTxSize();
const CTransaction& tx = it->second.GetTx(); const CTransaction& tx = it->second.GetTx();
bool fDependsWait = false;
BOOST_FOREACH(const CTxIn &txin, tx.vin) { BOOST_FOREACH(const CTxIn &txin, tx.vin) {
// Check that every mempool transaction's inputs refer to available coins, or other mempool tx's. // Check that every mempool transaction's inputs refer to available coins, or other mempool tx's.
std::map<uint256, CTxMemPoolEntry>::const_iterator it2 = mapTx.find(txin.prevout.hash); std::map<uint256, CTxMemPoolEntry>::const_iterator it2 = mapTx.find(txin.prevout.hash);
if (it2 != mapTx.end()) { if (it2 != mapTx.end()) {
const CTransaction& tx2 = it2->second.GetTx(); const CTransaction& tx2 = it2->second.GetTx();
assert(tx2.vout.size() > txin.prevout.n && !tx2.vout[txin.prevout.n].IsNull()); assert(tx2.vout.size() > txin.prevout.n && !tx2.vout[txin.prevout.n].IsNull());
fDependsWait = true;
} else { } else {
const CCoins* coins = pcoins->AccessCoins(txin.prevout.hash); const CCoins* coins = pcoins->AccessCoins(txin.prevout.hash);
assert(coins && coins->IsAvailable(txin.prevout.n)); assert(coins && coins->IsAvailable(txin.prevout.n));
@ -561,6 +566,29 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
assert(it3->second.n == i); assert(it3->second.n == i);
i++; i++;
} }
if (fDependsWait)
waitingOnDependants.push_back(&it->second);
else {
CValidationState state; CTxUndo undo;
assert(CheckInputs(tx, state, mempoolDuplicate, false, 0, false, NULL));
UpdateCoins(tx, state, mempoolDuplicate, undo, 1000000);
}
}
unsigned int stepsSinceLastRemove = 0;
while (!waitingOnDependants.empty()) {
const CTxMemPoolEntry* entry = waitingOnDependants.front();
waitingOnDependants.pop_front();
CValidationState state;
if (!mempoolDuplicate.HaveInputs(entry->GetTx())) {
waitingOnDependants.push_back(entry);
stepsSinceLastRemove++;
assert(stepsSinceLastRemove < waitingOnDependants.size());
} else {
assert(CheckInputs(entry->GetTx(), state, mempoolDuplicate, false, 0, false, NULL));
CTxUndo undo;
UpdateCoins(entry->GetTx(), state, mempoolDuplicate, undo, 1000000);
stepsSinceLastRemove = 0;
}
} }
for (std::map<COutPoint, CInPoint>::const_iterator it = mapNextTx.begin(); it != mapNextTx.end(); it++) { for (std::map<COutPoint, CInPoint>::const_iterator it = mapNextTx.begin(); it != mapNextTx.end(); it++) {
uint256 hash = it->second.ptx->GetHash(); uint256 hash = it->second.ptx->GetHash();