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Performance Regression Fix: Pre-Allocate txChanged vector

0.14
Jeremy Rubin 8 years ago
parent
commit
ec81881b86
  1. 7
      src/main.cpp

7
src/main.cpp

@ -2835,7 +2835,7 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams, @@ -2835,7 +2835,7 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
UpdateTip(pindexNew, chainparams);
for(unsigned int i=0; i < pblock->vtx.size(); i++)
txChanged.push_back(std::make_tuple(pblock->vtx[i], pindexNew, i));
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);
@ -3019,14 +3019,17 @@ static void NotifyHeaderTip() { @@ -3019,14 +3019,17 @@ static void NotifyHeaderTip() {
bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, const CBlock *pblock) {
CBlockIndex *pindexMostWork = NULL;
CBlockIndex *pindexNewTip = NULL;
std::vector<std::tuple<CTransaction,CBlockIndex*,int>> txChanged;
if (pblock)
txChanged.reserve(pblock->vtx.size());
do {
txChanged.clear();
boost::this_thread::interruption_point();
if (ShutdownRequested())
break;
const CBlockIndex *pindexFork;
std::list<CTransaction> txConflicted;
std::vector<std::tuple<CTransaction,CBlockIndex*,int> > txChanged;
bool fInitialDownload;
int nNewHeight;
{

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