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fix crashes with small log counts

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This commit is contained in:
Robin Appelman 2024-07-30 14:46:33 +02:00
commit 1af348c35b
1 changed files with 7 additions and 3 deletions
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10
src/timegraph.rs
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@ -1,4 +1,5 @@
use hdrhistogram::Histogram; use hdrhistogram::Histogram;
use std::cmp::max;
use time::OffsetDateTime; use time::OffsetDateTime;
pub struct TimeGraph { pub struct TimeGraph {
@ -11,10 +12,13 @@ impl TimeGraph {
pub fn new(start: OffsetDateTime, end: OffsetDateTime) -> Self { pub fn new(start: OffsetDateTime, end: OffsetDateTime) -> Self {
let histogram = Histogram::new_with_bounds( let histogram = Histogram::new_with_bounds(
1, 1,
end.unix_timestamp() as u64 - start.unix_timestamp() as u64 + 1, max(
end.unix_timestamp() as u64 - start.unix_timestamp() as u64 + 1,
4,
),
3, 3,
) )
.unwrap(); .expect("Failed to build histogram");
TimeGraph { TimeGraph {
histogram, histogram,
start: start.unix_timestamp() as u64, start: start.unix_timestamp() as u64,
@ -32,7 +36,7 @@ impl TimeGraph {
let step = (self.end - self.start + 1) / buckets as u64; let step = (self.end - self.start + 1) / buckets as u64;
self.histogram self.histogram
.iter_linear(step) .iter_linear(max(1, step))
.map(|val| val.count_since_last_iteration()) .map(|val| val.count_since_last_iteration())
} }