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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_SYSTEM_SCHEDULER_CONFIGURATION_MANAGER_BASE_H_
#define CHROMEOS_ASH_COMPONENTS_SYSTEM_SCHEDULER_CONFIGURATION_MANAGER_BASE_H_
#include <stddef.h>
#include <optional>
#include <utility>
#include "base/component_export.h"
#include "base/observer_list.h"
namespace ash {
// A base class for SchedulerConfigurationManager.
class COMPONENT_EXPORT(CHROMEOS_ASH_COMPONENTS_SYSTEM)
SchedulerConfigurationManagerBase {
public:
class Observer : public base::CheckedObserver {
public:
// Called when SetSchedulerConfiguration D-Bus call to debugd returns.
virtual void OnConfigurationSet(bool success,
size_t num_cores_disabled) = 0;
};
SchedulerConfigurationManagerBase();
SchedulerConfigurationManagerBase(const SchedulerConfigurationManagerBase&) =
delete;
SchedulerConfigurationManagerBase& operator=(
const SchedulerConfigurationManagerBase&) = delete;
virtual ~SchedulerConfigurationManagerBase();
// Gets the most recent reply from debugd for SetSchedulerConfiguration D-Bus
// call. Returns nullopt when the D-Bus client hasn't received any replies
// yet.
virtual std::optional<std::pair<bool, size_t>> GetLastReply() const = 0;
void AddObserver(Observer* obs);
void RemoveObserver(Observer* obs);
protected:
base::ObserverList<Observer> observer_list_;
};
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_SYSTEM_SCHEDULER_CONFIGURATION_MANAGER_BASE_H_
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