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Extend checkpointing to 24 hours in the past. #143

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Apr 5, 2016
Merged

Extend checkpointing to 24 hours in the past. #143

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14 changes: 6 additions & 8 deletions src/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1834,14 +1834,12 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
return true;
}

bool fScriptChecks = true;
if (fCheckpointsEnabled) {
CBlockIndex *pindexLastCheckpoint = Checkpoints::GetLastCheckpoint(chainparams.Checkpoints());
if (pindexLastCheckpoint && pindexLastCheckpoint->GetAncestor(pindex->nHeight) == pindex) {
// This block is an ancestor of a checkpoint: disable script checks
fScriptChecks = false;
}
}
const int64_t timeBarrier = GetTime() - 24 * 3600 * std::max(1, nScriptCheckThreads);
// Blocks that have varius days of POW behind them makes them secure in
// that actually online nodes checked the scripts, so during initial sync we
// don't need to check the scripts.
// All other block validity tests are still checked.
bool fScriptChecks = !fCheckpointsEnabled || block.nTime > timeBarrier;

int64_t nTime1 = GetTimeMicros(); nTimeCheck += nTime1 - nTimeStart;
LogPrint("bench", " - Sanity checks: %.2fms [%.2fs]\n", 0.001 * (nTime1 - nTimeStart), nTimeCheck * 0.000001);
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