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Fix potential division by zero in speedometer

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This commit is contained in:
Marcus Holland-Moritz 2023-07-20 15:56:46 +02:00
parent a9523fca3a
commit 1811107106
1 changed files with 5 additions and 4 deletions
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9
include/dwarfs/speedometer.h
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@ -49,10 +49,11 @@ class speedometer {
}
auto const& first = samples_.front();
auto const& last = samples_.back();
auto dt = last.first - first.first;
auto dv = last.second - first.second;
return (1000 * dv) /
std::chrono::duration_cast<std::chrono::milliseconds>(dt).count();
auto const dt = last.first - first.first;
auto const dv = last.second - first.second;
auto const elapsed_ms =
std::chrono::duration_cast<std::chrono::milliseconds>(dt).count();
return elapsed_ms > 0 ? (1000 * dv) / elapsed_ms : T();
}
void clear() { samples_.clear(); }