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fix: avoid potential divide-by-zero in H/s stats calculation

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Kittywhiskers Van Gogh 2024-12-08 10:14:46 +00:00
parent 7c00c868d8
commit b39c6b9909
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1 changed files with 16 additions and 13 deletions
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29
src/init.cpp
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@ -848,20 +848,23 @@ static void PeriodicStats(NodeContext& node)
LogPrintf("%s: GetUTXOStats failed\n", __func__);
}
// short version of GetNetworkHashPS(120, -1);
CBlockIndex *tip = chainman.ActiveChain().Tip();
CBlockIndex *pindex = tip;
int64_t minTime = pindex->GetBlockTime();
int64_t maxTime = minTime;
for (int i = 0; i < 120 && pindex->pprev != nullptr; i++) {
pindex = pindex->pprev;
int64_t time = pindex->GetBlockTime();
minTime = std::min(time, minTime);
maxTime = std::max(time, maxTime);
}
arith_uint256 workDiff = tip->nChainWork - pindex->nChainWork;
int64_t timeDiff = maxTime - minTime;
double nNetworkHashPS = workDiff.getdouble() / timeDiff;
double nNetworkHashPS = [&]() {
// Short version of GetNetworkHashPS(120, -1);
CBlockIndex *pindex = tip;
int64_t minTime = pindex->GetBlockTime();
int64_t maxTime = minTime;
for (int i = 0; i < 120 && pindex->pprev != nullptr; i++) {
pindex = pindex->pprev;
int64_t time = pindex->GetBlockTime();
minTime = std::min(time, minTime);
maxTime = std::max(time, maxTime);
}
if (minTime == maxTime) return 0.0;
arith_uint256 workDiff = tip->nChainWork - pindex->nChainWork;
int64_t timeDiff = maxTime - minTime;
return workDiff.getdouble() / timeDiff;
}();
::g_stats_client->gaugeDouble("network.hashesPerSecond", nNetworkHashPS);
::g_stats_client->gaugeDouble("network.terahashesPerSecond", nNetworkHashPS / 1e12);