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Keep blocks as shared_ptrs, instead of copying txn in ConnectTip

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This commit is contained in:
Matt Corallo 2016-10-15 12:12:50 -04:00
parent 6fdd43b968
commit fd9d89070a
1 changed files with 16 additions and 9 deletions
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25
src/validation.cpp
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@ -2158,7 +2158,7 @@ static int64_t nTimePostConnect = 0;
*/
struct ConnectTrace {
std::vector<CTransactionRef> txConflicted;
std::vector<std::tuple<CTransactionRef,CBlockIndex*,int>> txChanged;
std::vector<std::pair<CBlockIndex*, std::shared_ptr<const CBlock> > > blocksConnected;
};
/**
@ -2170,11 +2170,15 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
assert(pindexNew->pprev == chainActive.Tip());
// Read block from disk.
int64_t nTime1 = GetTimeMicros();
CBlock block;
if (!pblock) {
if (!ReadBlockFromDisk(block, pindexNew, chainparams.GetConsensus()))
std::shared_ptr<CBlock> pblockNew = std::make_shared<CBlock>();
connectTrace.blocksConnected.emplace_back(pindexNew, pblockNew);
if (!ReadBlockFromDisk(*pblockNew, pindexNew, chainparams.GetConsensus()))
return AbortNode(state, "Failed to read block");
pblock = &block;
pblock = pblockNew.get();
} else {
//TODO: This copy is a major performance regression, but ProcessNewBlock callers need updated to fix this
connectTrace.blocksConnected.emplace_back(pindexNew, std::make_shared<const CBlock>(*pblock));
}
// Apply the block atomically to the chain state.
int64_t nTime2 = GetTimeMicros(); nTimeReadFromDisk += nTime2 - nTime1;
@ -2205,9 +2209,6 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
// Update chainActive & related variables.
UpdateTip(pindexNew, chainparams);
for (unsigned int i=0; i < pblock->vtx.size(); i++)
connectTrace.txChanged.emplace_back(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);
LogPrint("bench", "- Connect block: %.2fms [%.2fs]\n", (nTime6 - nTime1) * 0.001, nTimeTotal * 0.000001);
@ -2329,6 +2330,8 @@ static bool ActivateBestChainStep(CValidationState& state, const CChainParams& c
state = CValidationState();
fInvalidFound = true;
fContinue = false;
// If we didn't actually connect the block, don't notify listeners about it
connectTrace.blocksConnected.pop_back();
break;
} else {
// A system error occurred (disk space, database error, ...).
@ -2431,8 +2434,12 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
GetMainSignals().SyncTransaction(*tx, pindexNewTip, CMainSignals::SYNC_TRANSACTION_NOT_IN_BLOCK);
}
// ... and about transactions that got confirmed:
for (unsigned int i = 0; i < connectTrace.txChanged.size(); i++)
GetMainSignals().SyncTransaction(*std::get<0>(connectTrace.txChanged[i]), std::get<1>(connectTrace.txChanged[i]), std::get<2>(connectTrace.txChanged[i]));
for (const auto& pair : connectTrace.blocksConnected) {
assert(pair.second);
const CBlock& block = *(pair.second);
for (unsigned int i = 0; i < block.vtx.size(); i++)
GetMainSignals().SyncTransaction(*block.vtx[i], pair.first, i);
}
// Notify external listeners about the new tip.
GetMainSignals().UpdatedBlockTip(pindexNewTip, pindexFork, fInitialDownload);