| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_ |
| #define CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_ |
| |
| #include "base/macros.h" |
| #include "base/profiler/stack_sampling_profiler.h" |
| |
| // Chooses a configuration for the stack sampling profiler for browser process |
| // startup. This must live outside of ChromeBrowserMainParts so it can be |
| // friended by ChromeMetricsServiceAccessor. |
| class StackSamplingConfiguration { |
| public: |
| StackSamplingConfiguration(); |
| |
| // Get the stack sampling params to use for this session. |
| base::StackSamplingProfiler::SamplingParams GetSamplingParams() const; |
| |
| // Returns true if the profiler should be started at all. |
| bool IsProfilerEnabled() const; |
| |
| // Register the chosen configuration as a synthetic field trial. |
| void RegisterSyntheticFieldTrial() const; |
| |
| private: |
| enum ProfileConfiguration { |
| PROFILE_DISABLED, |
| PROFILE_CONTROL, |
| PROFILE_NO_SAMPLES, // Run the profiler thread, but don't collect profiles. |
| PROFILE_5HZ, |
| PROFILE_10HZ, |
| PROFILE_100HZ |
| }; |
| |
| static ProfileConfiguration GenerateConfiguration(); |
| |
| const ProfileConfiguration configuration_; |
| |
| DISALLOW_COPY_AND_ASSIGN(StackSamplingConfiguration); |
| }; |
| |
| #endif // CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_ |