/*
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* Copyright 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "Thread.h"
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#include <cstdint>
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#include <mutex>
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#include <string>
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#include <vector>
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#include <chrono>
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namespace swappy {
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class Settings {
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private:
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// Allows construction with std::unique_ptr from a static method, but disallows construction
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// outside of the class since no one else can construct a ConstructorTag
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struct ConstructorTag {
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};
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public:
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explicit Settings(ConstructorTag) {};
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static Settings *getInstance();
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using Listener = std::function<void()>;
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void addListener(Listener listener);
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void setRefreshPeriod(std::chrono::nanoseconds period);
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void setSwapIntervalNS(uint64_t swap_ns);
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void setUseAffinity(bool);
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std::chrono::nanoseconds getRefreshPeriod() const;
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uint64_t getSwapIntervalNS() const;
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bool getUseAffinity() const;
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private:
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void notifyListeners();
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mutable std::mutex mMutex;
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std::vector<Listener> mListeners GUARDED_BY(mMutex);
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std::chrono::nanoseconds
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mRefreshPeriod GUARDED_BY(mMutex) = std::chrono::nanoseconds{12'345'678};
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uint64_t mSwapIntervalNS GUARDED_BY(mMutex) = 16666667L;
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bool mUseAffinity GUARDED_BY(mMutex) = true;
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};
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} // namespace swappy
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