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// 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_COMMON_STACK_SAMPLING_CONFIGURATION_H_
#define CHROME_COMMON_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;
// Get the synthetic field trial configuration. Returns true if a synthetic
// field trial should be registered.
bool GetSyntheticFieldTrial(std::string* trial_name,
std::string* group_name) 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_COMMON_STACK_SAMPLING_CONFIGURATION_H_