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Merge #8681: Performance Regression Fix: Pre-Allocate txChanged vector

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ec81881 Performance Regression Fix: Pre-Allocate txChanged vector (Jeremy Rubin)
This commit is contained in:
Pieter Wuille 2016-09-09 13:27:38 +02:00
commit 6898213409
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1 changed files with 7 additions and 4 deletions
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src/main.cpp
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@ -2787,7 +2787,7 @@ static int64_t nTimePostConnect = 0;
* Connect a new block to chainActive. pblock is either NULL or a pointer to a CBlock * 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. * corresponding to pindexNew, to bypass loading it again from disk.
*/ */
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) 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()); assert(pindexNew->pprev == chainActive.Tip());
// Read block from disk. // Read block from disk.
@ -2829,7 +2829,7 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
UpdateTip(pindexNew, chainparams); UpdateTip(pindexNew, chainparams);
for(unsigned int i=0; i < pblock->vtx.size(); i++) 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; 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 postprocess: %.2fms [%.2fs]\n", (nTime6 - nTime5) * 0.001, nTimePostConnect * 0.000001);
@ -2911,7 +2911,7 @@ static void PruneBlockIndexCandidates() {
* Try to make some progress towards making pindexMostWork the active block. * Try to make some progress towards making pindexMostWork the active block.
* pblock is either NULL or a pointer to a CBlock corresponding to pindexMostWork. * 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, std::list<CTransaction>& txConflicted, std::vector<std::tuple<CTransaction,CBlockIndex*,int> >& txChanged) 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); AssertLockHeld(cs_main);
const CBlockIndex *pindexOldTip = chainActive.Tip(); const CBlockIndex *pindexOldTip = chainActive.Tip();
@ -3013,14 +3013,17 @@ static void NotifyHeaderTip() {
bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, const CBlock *pblock, CConnman* connman) { bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, const CBlock *pblock, CConnman* connman) {
CBlockIndex *pindexMostWork = NULL; CBlockIndex *pindexMostWork = NULL;
CBlockIndex *pindexNewTip = NULL; CBlockIndex *pindexNewTip = NULL;
std::vector<std::tuple<CTransaction,CBlockIndex*,int>> txChanged;
if (pblock)
txChanged.reserve(pblock->vtx.size());
do { do {
txChanged.clear();
boost::this_thread::interruption_point(); boost::this_thread::interruption_point();
if (ShutdownRequested()) if (ShutdownRequested())
break; break;
const CBlockIndex *pindexFork; const CBlockIndex *pindexFork;
std::list<CTransaction> txConflicted; std::list<CTransaction> txConflicted;
std::vector<std::tuple<CTransaction,CBlockIndex*,int> > txChanged;
bool fInitialDownload; bool fInitialDownload;
int nNewHeight; int nNewHeight;
{ {