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Fix possible numeric underflow in sampler:43 #31

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Jan 7, 2022
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Fix possible numeric underflow in sampler:43 #31

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4 changes: 2 additions & 2 deletions src/sampler.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -39,8 +39,8 @@ impl<'a> Sampler<'a> {
/// Should be called when a workload iteration finished.
/// If there comes the time, it will send the stats to the output.
pub async fn cycle_completed(&mut self, cycle: u64, now: Instant) {
let current_interval_duration = now - self.last_snapshot_time;
let current_interval_cycle_count = cycle - self.last_snapshot_cycle;
let current_interval_duration = now.saturating_duration_since(self.last_snapshot_time);
let current_interval_cycle_count = cycle.saturating_sub(self.last_snapshot_cycle);

// Don't snapshot if we're too close to the end of the run,
// to avoid excessively small samples:
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