chromium/base/metrics/bucket_ranges.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// BucketRanges stores the vector of ranges that delimit what samples are
// tallied in the corresponding buckets of a histogram. Histograms that have
// same ranges for all their corresponding buckets should share the same
// BucketRanges object.
//
// E.g. A 5 buckets LinearHistogram with 1 as minimal value and 4 as maximal
// value will need a BucketRanges with 6 ranges:
// 0, 1, 2, 3, 4, INT_MAX
//
// TODO(kaiwang): Currently we keep all negative values in 0~1 bucket. Consider
// changing 0 to INT_MIN.

#ifndef BASE_METRICS_BUCKET_RANGES_H_
#define BASE_METRICS_BUCKET_RANGES_H_

#include <limits.h>
#include <stddef.h>
#include <stdint.h>

#include <atomic>
#include <vector>

#include "base/base_export.h"
#include "base/check_op.h"
#include "base/metrics/histogram_base.h"

namespace base {

class BASE_EXPORT BucketRanges { … };

}  // namespace base

#endif  // BASE_METRICS_BUCKET_RANGES_H_