| Index: webrtc/base/analytics/percentile_filter.h
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| diff --git a/webrtc/base/analytics/percentile_filter.h b/webrtc/base/analytics/percentile_filter.h
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| deleted file mode 100644
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| index 7cfba5ad0039024e3de568de35cf81c4da361d57..0000000000000000000000000000000000000000
|
| --- a/webrtc/base/analytics/percentile_filter.h
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| +++ /dev/null
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| @@ -1,115 +0,0 @@
|
| -/*
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| - * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
|
| - *
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| - * Use of this source code is governed by a BSD-style license
|
| - * that can be found in the LICENSE file in the root of the source
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| - * tree. An additional intellectual property rights grant can be found
|
| - * in the file PATENTS. All contributing project authors may
|
| - * be found in the AUTHORS file in the root of the source tree.
|
| - */
|
| -
|
| -#ifndef WEBRTC_BASE_ANALYTICS_PERCENTILE_FILTER_H_
|
| -#define WEBRTC_BASE_ANALYTICS_PERCENTILE_FILTER_H_
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| -
|
| -#include <stdint.h>
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| -
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| -#include <iterator>
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| -#include <set>
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| -
|
| -#include "webrtc/base/checks.h"
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| -
|
| -namespace webrtc {
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| -
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| -// Class to efficiently get the percentile value from a group of observations.
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| -// The percentile is the value below which a given percentage of the
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| -// observations fall.
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| -template <typename T>
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| -class PercentileFilter {
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| - public:
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| - // Construct filter. |percentile| should be between 0 and 1.
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| - explicit PercentileFilter(float percentile);
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| -
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| - // Insert one observation. The complexity of this operation is logarithmic in
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| - // the size of the container.
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| - void Insert(const T& value);
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| -
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| - // Remove one observation or return false if |value| doesn't exist in the
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| - // container. The complexity of this operation is logarithmic in the size of
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| - // the container.
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| - bool Erase(const T& value);
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| -
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| - // Get the percentile value. The complexity of this operation is constant.
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| - T GetPercentileValue() const;
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| -
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| - private:
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| - // Update iterator and index to point at target percentile value.
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| - void UpdatePercentileIterator();
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| -
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| - const float percentile_;
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| - std::multiset<T> set_;
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| - // Maintain iterator and index of current target percentile value.
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| - typename std::multiset<T>::iterator percentile_it_;
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| - int64_t percentile_index_;
|
| -};
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| -
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| -template <typename T>
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| -PercentileFilter<T>::PercentileFilter(float percentile)
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| - : percentile_(percentile),
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| - percentile_it_(set_.begin()),
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| - percentile_index_(0) {
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| - RTC_CHECK_GE(percentile, 0.0f);
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| - RTC_CHECK_LE(percentile, 1.0f);
|
| -}
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| -
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| -template <typename T>
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| -void PercentileFilter<T>::Insert(const T& value) {
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| - // Insert element at the upper bound.
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| - set_.insert(value);
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| - if (set_.size() == 1u) {
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| - // First element inserted - initialize percentile iterator and index.
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| - percentile_it_ = set_.begin();
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| - percentile_index_ = 0;
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| - } else if (value < *percentile_it_) {
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| - // If new element is before us, increment |percentile_index_|.
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| - ++percentile_index_;
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| - }
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| - UpdatePercentileIterator();
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| -}
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| -
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| -template <typename T>
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| -bool PercentileFilter<T>::Erase(const T& value) {
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| - typename std::multiset<T>::const_iterator it = set_.lower_bound(value);
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| - // Ignore erase operation if the element is not present in the current set.
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| - if (it == set_.end() || *it != value)
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| - return false;
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| - if (it == percentile_it_) {
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| - // If same iterator, update to the following element. Index is not
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| - // affected.
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| - percentile_it_ = set_.erase(it);
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| - } else {
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| - set_.erase(it);
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| - // If erased element was before us, decrement |percentile_index_|.
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| - if (value <= *percentile_it_)
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| - --percentile_index_;
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| - }
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| - UpdatePercentileIterator();
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| - return true;
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| -}
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| -
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| -template <typename T>
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| -void PercentileFilter<T>::UpdatePercentileIterator() {
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| - if (set_.empty())
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| - return;
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| - const int64_t index = static_cast<int64_t>(percentile_ * (set_.size() - 1));
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| - std::advance(percentile_it_, index - percentile_index_);
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| - percentile_index_ = index;
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| -}
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| -
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| -template <typename T>
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| -T PercentileFilter<T>::GetPercentileValue() const {
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| - return set_.empty() ? 0 : *percentile_it_;
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| -}
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| -
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| -} // namespace webrtc
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| -
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| -#endif // WEBRTC_BASE_ANALYTICS_PERCENTILE_FILTER_H_
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|
|