1 // Copyright 2022 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef BASE_CPU_REDUCTION_EXPERIMENT_H_
6 #define BASE_CPU_REDUCTION_EXPERIMENT_H_
8 #include "base/base_export.h"
12 // Returns whether the cpu cycle reduction experiment is running.
13 // The goal of this experiment is to better understand the relationship between
14 // total CPU cycles used across the fleet and top-line chrome metrics.
15 BASE_EXPORT bool IsRunningCpuReductionExperiment();
17 // Must be called after FeatureList initialization and while chrome is still
19 BASE_EXPORT void InitializeCpuReductionExperiment();
21 // Returns true if the next sample should be recorded to an histogram
22 // sub-sampled under the CPU reduction experiment. Returns true randomly for
23 // ~1/1000 calls when the experiment is enabled, or always returns true when the
24 // experiment is disabled.
25 BASE_EXPORT bool ShouldLogHistogramForCpuReductionExperiment();
29 #endif // BASE_CPU_REDUCTION_EXPERIMENT_H_