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Reduce cs_main locks during ConnectTip/SyncWithWallets

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This commit is contained in:
Jonas Schnelli 2016-04-26 13:55:13 +02:00
parent 0d0abcac1e
commit b3b3c2a562
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GPG Key ID: 29D4BCB6416F53EC
7 changed files with 49 additions and 54 deletions
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40
src/main.cpp
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@ -1541,7 +1541,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const C
}
}
SyncWithWallets(tx, NULL, NULL);
SyncWithWallets(tx, NULL);
return true;
}
@ -2770,7 +2770,7 @@ bool static DisconnectTip(CValidationState& state, const CChainParams& chainpara
// Let wallets know transactions went from 1-confirmed to
// 0-confirmed or conflicted:
BOOST_FOREACH(const CTransaction &tx, block.vtx) {
SyncWithWallets(tx, pindexDelete->pprev, NULL);
SyncWithWallets(tx, pindexDelete->pprev);
}
return true;
}
@ -2785,7 +2785,7 @@ static int64_t nTimePostConnect = 0;
* Connect a new block to chainActive. pblock is either NULL or a pointer to a CBlock
* corresponding to pindexNew, to bypass loading it again from disk.
*/
bool static ConnectTip(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexNew, const CBlock* pblock)
bool static ConnectTip(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexNew, const CBlock* pblock, std::list<CTransaction> &txConflicted, std::vector<std::tuple<CTransaction,CBlockIndex*,int> > &txChanged)
{
assert(pindexNew->pprev == chainActive.Tip());
// Read block from disk.
@ -2821,20 +2821,13 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
return false;
int64_t nTime5 = GetTimeMicros(); nTimeChainState += nTime5 - nTime4;
LogPrint("bench", " - Writing chainstate: %.2fms [%.2fs]\n", (nTime5 - nTime4) * 0.001, nTimeChainState * 0.000001);
// Remove conflicting transactions from the mempool.
list<CTransaction> txConflicted;
// Remove conflicting transactions from the mempool.;
mempool.removeForBlock(pblock->vtx, pindexNew->nHeight, txConflicted, !IsInitialBlockDownload());
// Update chainActive & related variables.
UpdateTip(pindexNew, chainparams);
// Tell wallet about transactions that went from mempool
// to conflicted:
BOOST_FOREACH(const CTransaction &tx, txConflicted) {
SyncWithWallets(tx, pindexNew, NULL);
}
// ... and about transactions that got confirmed:
BOOST_FOREACH(const CTransaction &tx, pblock->vtx) {
SyncWithWallets(tx, pindexNew, pblock);
}
for(unsigned int i=0; i < pblock->vtx.size(); i++)
txChanged.push_back(std::make_tuple(pblock->vtx[i], pindexNew, i));
int64_t nTime6 = GetTimeMicros(); nTimePostConnect += nTime6 - nTime5; nTimeTotal += nTime6 - nTime1;
LogPrint("bench", " - Connect postprocess: %.2fms [%.2fs]\n", (nTime6 - nTime5) * 0.001, nTimePostConnect * 0.000001);
@ -2916,7 +2909,7 @@ static void PruneBlockIndexCandidates() {
* Try to make some progress towards making pindexMostWork the active block.
* pblock is either NULL or a pointer to a CBlock corresponding to pindexMostWork.
*/
static bool ActivateBestChainStep(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexMostWork, const CBlock* pblock, bool& fInvalidFound)
static bool ActivateBestChainStep(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexMostWork, const CBlock* pblock, bool& fInvalidFound, std::list<CTransaction>& txConflicted, std::vector<std::tuple<CTransaction,CBlockIndex*,int> >& txChanged)
{
AssertLockHeld(cs_main);
const CBlockIndex *pindexOldTip = chainActive.Tip();
@ -2949,7 +2942,7 @@ static bool ActivateBestChainStep(CValidationState& state, const CChainParams& c
// Connect new blocks.
BOOST_REVERSE_FOREACH(CBlockIndex *pindexConnect, vpindexToConnect) {
if (!ConnectTip(state, chainparams, pindexConnect, pindexConnect == pindexMostWork ? pblock : NULL)) {
if (!ConnectTip(state, chainparams, pindexConnect, pindexConnect == pindexMostWork ? pblock : NULL, txConflicted, txChanged)) {
if (state.IsInvalid()) {
// The block violates a consensus rule.
if (!state.CorruptionPossible())
@ -3024,6 +3017,8 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
break;
const CBlockIndex *pindexFork;
std::list<CTransaction> txConflicted;
std::vector<std::tuple<CTransaction,CBlockIndex*,int> > txChanged;
bool fInitialDownload;
int nNewHeight;
{
@ -3038,7 +3033,7 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
return true;
bool fInvalidFound = false;
if (!ActivateBestChainStep(state, chainparams, pindexMostWork, pblock && pblock->GetHash() == pindexMostWork->GetBlockHash() ? pblock : NULL, fInvalidFound))
if (!ActivateBestChainStep(state, chainparams, pindexMostWork, pblock && pblock->GetHash() == pindexMostWork->GetBlockHash() ? pblock : NULL, fInvalidFound, txConflicted, txChanged))
return false;
if (fInvalidFound) {
@ -3053,6 +3048,17 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
// When we reach this point, we switched to a new tip (stored in pindexNewTip).
// Notifications/callbacks that can run without cs_main
// throw all transactions though the signal-interface
// while _not_ holding the cs_main lock
BOOST_FOREACH(const CTransaction &tx, txConflicted)
{
SyncWithWallets(tx, pindexNewTip);
}
// ... and about transactions that got confirmed:
for(unsigned int i = 0; i < txChanged.size(); i++)
SyncWithWallets(std::get<0>(txChanged[i]), std::get<1>(txChanged[i]), std::get<2>(txChanged[i]));
// Always notify the UI if a new block tip was connected
if (pindexFork != pindexNewTip) {
uiInterface.NotifyBlockTip(fInitialDownload, pindexNewTip);

4
src/validationinterface.cpp
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@ -48,6 +48,6 @@ void UnregisterAllValidationInterfaces() {
g_signals.UpdatedBlockTip.disconnect_all_slots();
}
void SyncWithWallets(const CTransaction &tx, const CBlockIndex *pindex, const CBlock *pblock) {
g_signals.SyncTransaction(tx, pindex, pblock);
void SyncWithWallets(const CTransaction &tx, const CBlockIndex *pindex, int posInBlock) {
g_signals.SyncTransaction(tx, pindex, posInBlock);
}

6
src/validationinterface.h
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@ -28,12 +28,12 @@ void UnregisterValidationInterface(CValidationInterface* pwalletIn);
/** Unregister all wallets from core */
void UnregisterAllValidationInterfaces();
/** Push an updated transaction to all registered wallets */
void SyncWithWallets(const CTransaction& tx, const CBlockIndex *pindex, const CBlock* pblock = NULL);
void SyncWithWallets(const CTransaction& tx, const CBlockIndex *pindex, int posInBlock = -1);
class CValidationInterface {
protected:
virtual void UpdatedBlockTip(const CBlockIndex *pindex) {}
virtual void SyncTransaction(const CTransaction &tx, const CBlockIndex *pindex, const CBlock *pblock) {}
virtual void SyncTransaction(const CTransaction &tx, const CBlockIndex *pindex, int posInBlock) {}
virtual void SetBestChain(const CBlockLocator &locator) {}
virtual void UpdatedTransaction(const uint256 &hash) {}
virtual void Inventory(const uint256 &hash) {}
@ -50,7 +50,7 @@ struct CMainSignals {
/** Notifies listeners of updated block chain tip */
boost::signals2::signal<void (const CBlockIndex *)> UpdatedBlockTip;
/** Notifies listeners of updated transaction data (transaction, and optionally the block it is found in. */
boost::signals2::signal<void (const CTransaction &, const CBlockIndex *pindex, const CBlock *)> SyncTransaction;
boost::signals2::signal<void (const CTransaction &, const CBlockIndex *pindex, int posInBlock)> SyncTransaction;
/** Notifies listeners of an updated transaction without new data (for now: a coinbase potentially becoming visible). */
boost::signals2::signal<void (const uint256 &)> UpdatedTransaction;
/** Notifies listeners of a new active block chain. */

43
src/wallet/wallet.cpp
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@ -886,18 +886,18 @@ bool CWallet::LoadToWallet(const CWalletTx& wtxIn)
* pblock is optional, but should be provided if the transaction is known to be in a block.
* If fUpdate is true, existing transactions will be updated.
*/
bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlockIndex* pIndex, int posInBlock, bool fUpdate)
{
{
AssertLockHeld(cs_wallet);
if (pblock) {
if (posInBlock != -1) {
BOOST_FOREACH(const CTxIn& txin, tx.vin) {
std::pair<TxSpends::const_iterator, TxSpends::const_iterator> range = mapTxSpends.equal_range(txin.prevout);
while (range.first != range.second) {
if (range.first->second != tx.GetHash()) {
LogPrintf("Transaction %s (in block %s) conflicts with wallet transaction %s (both spend %s:%i)\n", tx.GetHash().ToString(), pblock->GetHash().ToString(), range.first->second.ToString(), range.first->first.hash.ToString(), range.first->first.n);
MarkConflicted(pblock->GetHash(), range.first->second);
LogPrintf("Transaction %s (in block %s) conflicts with wallet transaction %s (both spend %s:%i)\n", tx.GetHash().ToString(), pIndex->GetBlockHash().ToString(), range.first->second.ToString(), range.first->first.hash.ToString(), range.first->first.n);
MarkConflicted(pIndex->GetBlockHash(), range.first->second);
}
range.first++;
}
@ -911,8 +911,8 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
CWalletTx wtx(this,tx);
// Get merkle branch if transaction was found in a block
if (pblock)
wtx.SetMerkleBranch(*pblock);
if (posInBlock != -1)
wtx.SetMerkleBranch(pIndex, posInBlock);
return AddToWallet(wtx, false);
}
@ -1037,11 +1037,11 @@ void CWallet::MarkConflicted(const uint256& hashBlock, const uint256& hashTx)
}
}
void CWallet::SyncTransaction(const CTransaction& tx, const CBlockIndex *pindex, const CBlock* pblock)
void CWallet::SyncTransaction(const CTransaction& tx, const CBlockIndex *pindex, int posInBlock)
{
LOCK2(cs_main, cs_wallet);
if (!AddToWalletIfInvolvingMe(tx, pblock, true))
if (!AddToWalletIfInvolvingMe(tx, pindex, posInBlock, true))
return; // Not one of ours
// If a transaction changes 'conflicted' state, that changes the balance
@ -1399,9 +1399,10 @@ int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
CBlock block;
ReadBlockFromDisk(block, pindex, Params().GetConsensus());
BOOST_FOREACH(CTransaction& tx, block.vtx)
int posInBlock;
for (posInBlock = 0; posInBlock < (int)block.vtx.size(); posInBlock++)
{
if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
if (AddToWalletIfInvolvingMe(block.vtx[posInBlock], pindex, posInBlock, fUpdate))
ret++;
}
pindex = chainActive.Next(pindex);
@ -3526,31 +3527,19 @@ CWalletKey::CWalletKey(int64_t nExpires)
nTimeExpires = nExpires;
}
int CMerkleTx::SetMerkleBranch(const CBlock& block)
int CMerkleTx::SetMerkleBranch(const CBlockIndex* pindex, int posInBlock)
{
AssertLockHeld(cs_main);
CBlock blockTmp;
// Update the tx's hashBlock
hashBlock = block.GetHash();
hashBlock = pindex->GetBlockHash();
// Locate the transaction
for (nIndex = 0; nIndex < (int)block.vtx.size(); nIndex++)
if (block.vtx[nIndex] == *(CTransaction*)this)
break;
if (nIndex == (int)block.vtx.size())
{
nIndex = -1;
LogPrintf("ERROR: SetMerkleBranch(): couldn't find tx in block\n");
return 0;
}
// set the position of the transaction in the block
nIndex = posInBlock;
// Is the tx in a block that's in the main chain
BlockMap::iterator mi = mapBlockIndex.find(hashBlock);
if (mi == mapBlockIndex.end())
return 0;
const CBlockIndex* pindex = (*mi).second;
if (!pindex || !chainActive.Contains(pindex))
if (!chainActive.Contains(pindex))
return 0;
return chainActive.Height() - pindex->nHeight + 1;

6
src/wallet/wallet.h
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@ -200,7 +200,7 @@ public:
READWRITE(nIndex);
}
int SetMerkleBranch(const CBlock& block);
int SetMerkleBranch(const CBlockIndex* pIndex, int posInBlock);
/**
* Return depth of transaction in blockchain:
@ -731,8 +731,8 @@ public:
void MarkDirty();
bool AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose=true);
bool LoadToWallet(const CWalletTx& wtxIn);
void SyncTransaction(const CTransaction& tx, const CBlockIndex *pindex, const CBlock* pblock);
bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate);
void SyncTransaction(const CTransaction& tx, const CBlockIndex *pindex, int posInBlock);
bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlockIndex* pIndex, int posInBlock, bool fUpdate);
int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
void ReacceptWalletTransactions();
void ResendWalletTransactions(int64_t nBestBlockTime);

2
src/zmq/zmqnotificationinterface.cpp
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@ -141,7 +141,7 @@ void CZMQNotificationInterface::UpdatedBlockTip(const CBlockIndex *pindex)
}
}
void CZMQNotificationInterface::SyncTransaction(const CTransaction& tx, const CBlockIndex* pindex, const CBlock* pblock)
void CZMQNotificationInterface::SyncTransaction(const CTransaction& tx, const CBlockIndex* pindex, int posInBlock)
{
for (std::list<CZMQAbstractNotifier*>::iterator i = notifiers.begin(); i!=notifiers.end(); )
{

2
src/zmq/zmqnotificationinterface.h
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@ -24,7 +24,7 @@ protected:
void Shutdown();
// CValidationInterface
void SyncTransaction(const CTransaction& tx, const CBlockIndex *pindex, const CBlock* pblock);
void SyncTransaction(const CTransaction& tx, const CBlockIndex *pindex, int posInBlock);
void UpdatedBlockTip(const CBlockIndex *pindex);
private: