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30 lines
1.1 KiB
C++
30 lines
1.1 KiB
C++
// Copyright 2022 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_CPU_REDUCTION_EXPERIMENT_H_
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#define BASE_CPU_REDUCTION_EXPERIMENT_H_
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#include "base/base_export.h"
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namespace base {
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// Returns whether the cpu cycle reduction experiment is running.
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// The goal of this experiment is to better understand the relationship between
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// total CPU cycles used across the fleet and top-line chrome metrics.
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BASE_EXPORT bool IsRunningCpuReductionExperiment();
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// Must be called after FeatureList initialization and while chrome is still
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// single-threaded.
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BASE_EXPORT void InitializeCpuReductionExperiment();
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// Returns true if the next sample should be recorded to an histogram
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// sub-sampled under the CPU reduction experiment. Returns true randomly for
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// ~1/1000 calls when the experiment is enabled, or always returns true when the
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// experiment is disabled.
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BASE_EXPORT bool ShouldLogHistogramForCpuReductionExperiment();
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} // namespace base
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#endif // BASE_CPU_REDUCTION_EXPERIMENT_H_
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