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// 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 "remoting/base/running_samples.h"
#include <algorithm>
#include "base/check_op.h"
namespace remoting {
RunningSamples::RunningSamples(int window_size) : window_size_(window_size) {
DCHECK_GT(window_size, 0);
}
RunningSamples::~RunningSamples() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
void RunningSamples::Record(int64_t value) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
data_points_.push_back(value);
sum_ += value;
if (data_points_.size() > window_size_) {
sum_ -= data_points_.front();
data_points_.pop_front();
}
}
double RunningSamples::Average() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (data_points_.empty()) {
return 0;
}
return static_cast<double>(sum_) / data_points_.size();
}
int64_t RunningSamples::Max() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (data_points_.empty()) {
return 0;
}
return *std::max_element(data_points_.begin(), data_points_.end());
}
bool RunningSamples::IsEmpty() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return data_points_.empty();
}
} // namespace remoting
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