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Adds AddSamples function to SamplesStatsCounter.

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this allows merging two stats counter objects, will be used in a future
CL to merge statistics for multiple video layers.

Bug: webrtc:10365
Change-Id: Iee9c48b68dfd7ba29537c14fc5f4a7c1c333d145
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/131942
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Yves Gerey <yvesg@google.com>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27534}
This commit is contained in:
Sebastian Jansson 2019-04-09 15:38:07 +02:00 committed by Commit Bot
parent 7a930da66b
commit d93a004086
2 changed files with 13 additions and 0 deletions
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10
rtc_base/numerics/samples_stats_counter.cc
View File

@ -38,6 +38,16 @@ void SamplesStatsCounter::AddSample(double value) {
sum_squared_ += value * value;
}
void SamplesStatsCounter::AddSamples(const SamplesStatsCounter& other) {
for (double sample : other.samples_)
samples_.push_back(sample);
sorted_ = false;
max_ = std::max(max_, other.max_);
min_ = std::min(min_, other.min_);
sum_ += other.sum_;
sum_squared_ += other.sum_squared_;
}
double SamplesStatsCounter::GetPercentile(double percentile) {
RTC_DCHECK(!IsEmpty());
RTC_CHECK_GE(percentile, 0);

3
rtc_base/numerics/samples_stats_counter.h
View File

@ -31,6 +31,9 @@ class SamplesStatsCounter {
// Adds sample to the stats in amortized O(1) time.
void AddSample(double value);
// Adds samples from another counter.
void AddSamples(const SamplesStatsCounter& other);
// Returns if there are any values in O(1) time.
bool IsEmpty() const { return samples_.empty(); }