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Merge pull request #2033 from sipa/kickconflicts

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Bugfix: remove conflicting transactions from memory pool
This commit is contained in:
Pieter Wuille 2012-11-30 17:10:07 -08:00
commit cd7fb7d1de
2 changed files with 28 additions and 3 deletions
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28
src/main.cpp
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@ -818,7 +818,7 @@ bool CTxMemPool::addUnchecked(const uint256& hash, CTransaction &tx)
}
bool CTxMemPool::remove(CTransaction &tx)
bool CTxMemPool::remove(const CTransaction &tx, bool fRecursive)
{
// Remove transaction from memory pool
{
@ -826,6 +826,13 @@ bool CTxMemPool::remove(CTransaction &tx)
uint256 hash = tx.GetHash();
if (mapTx.count(hash))
{
if (fRecursive) {
for (unsigned int i = 0; i < tx.vout.size(); i++) {
std::map<COutPoint, CInPoint>::iterator it = mapNextTx.find(COutPoint(hash, i));
if (it != mapNextTx.end())
remove(*it->second.ptx, true);
}
}
BOOST_FOREACH(const CTxIn& txin, tx.vin)
mapNextTx.erase(txin.prevout);
mapTx.erase(hash);
@ -835,6 +842,21 @@ bool CTxMemPool::remove(CTransaction &tx)
return true;
}
bool CTxMemPool::removeConflicts(const CTransaction &tx)
{
// Remove transactions which depend on inputs of tx, recursively
LOCK(cs);
BOOST_FOREACH(const CTxIn &txin, tx.vin) {
std::map<COutPoint, CInPoint>::iterator it = mapNextTx.find(txin.prevout);
if (it != mapNextTx.end()) {
const CTransaction &txConflict = *it->second.ptx;
if (txConflict != tx)
remove(txConflict, true);
}
}
return true;
}
void CTxMemPool::clear()
{
LOCK(cs);
@ -1757,8 +1779,10 @@ bool SetBestChain(CBlockIndex* pindexNew)
tx.AcceptToMemoryPool(false);
// Delete redundant memory transactions that are in the connected branch
BOOST_FOREACH(CTransaction& tx, vDelete)
BOOST_FOREACH(CTransaction& tx, vDelete) {
mempool.remove(tx);
mempool.removeConflicts(tx);
}
// Update best block in wallet (so we can detect restored wallets)
if (!fIsInitialDownload)

3
src/main.h
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@ -1831,7 +1831,8 @@ public:
bool accept(CTransaction &tx, bool fCheckInputs, bool* pfMissingInputs);
bool addUnchecked(const uint256& hash, CTransaction &tx);
bool remove(CTransaction &tx);
bool remove(const CTransaction &tx, bool fRecursive = false);
bool removeConflicts(const CTransaction &tx);
void clear();
void queryHashes(std::vector<uint256>& vtxid);
void pruneSpent(const uint256& hash, CCoins &coins);