third_party/blink/renderer/platform/instrumentation/histogram.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/platform/instrumentation/histogram.h"

#include "base/metrics/histogram.h"
#include "base/metrics/sparse_histogram.h"
#include "base/numerics/safe_conversions.h"

namespace blink {

CustomCountHistogram::CustomCountHistogram(const char* name,
                                           base::HistogramBase::Sample32 min,
                                           base::HistogramBase::Sample32 max,
                                           int32_t bucket_count) {
  histogram_ = base::Histogram::FactoryGet(
      name, min, max, bucket_count,
      base::HistogramBase::kUmaTargetedHistogramFlag);
}

CustomCountHistogram::CustomCountHistogram(base::HistogramBase* histogram)
    : histogram_(histogram) {}

void CustomCountHistogram::Count(base::HistogramBase::Sample32 sample) {
  histogram_->Add(sample);
}

void CustomCountHistogram::CountMany(base::HistogramBase::Sample32 sample,
                                     int count) {
  histogram_->AddCount(sample, count);
}

void CustomCountHistogram::CountMicroseconds(base::TimeDelta delta) {
  Count(base::saturated_cast<base::HistogramBase::Sample32>(
      delta.InMicroseconds()));
}

}  // namespace blink