98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/*
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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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#include "Settings.h"
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namespace swappy {
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std::unique_ptr<Settings> Settings::instance;
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Settings* Settings::getInstance() {
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if (!instance) {
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instance = std::make_unique<Settings>(ConstructorTag{});
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}
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return instance.get();
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}
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void Settings::reset() { instance.reset(); }
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void Settings::addListener(Listener listener) {
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std::lock_guard<std::mutex> lock(mMutex);
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mListeners.emplace_back(std::move(listener));
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}
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void Settings::removeAllListeners() {
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std::lock_guard<std::mutex> lock(mMutex);
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mListeners.clear();
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}
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void Settings::setDisplayTimings(const DisplayTimings& displayTimings) {
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{
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std::lock_guard<std::mutex> lock(mMutex);
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mDisplayTimings = displayTimings;
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}
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// Notify the listeners without the lock held
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notifyListeners();
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}
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void Settings::setSwapDuration(uint64_t swapNs) {
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{
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std::lock_guard<std::mutex> lock(mMutex);
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mSwapDuration = std::chrono::nanoseconds(swapNs);
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}
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// Notify the listeners without the lock held
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notifyListeners();
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}
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void Settings::setUseAffinity(bool tf) {
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{
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std::lock_guard<std::mutex> lock(mMutex);
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mUseAffinity = tf;
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}
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// Notify the listeners without the lock held
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notifyListeners();
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}
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const Settings::DisplayTimings& Settings::getDisplayTimings() const {
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std::lock_guard<std::mutex> lock(mMutex);
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return mDisplayTimings;
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}
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std::chrono::nanoseconds Settings::getSwapDuration() const {
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std::lock_guard<std::mutex> lock(mMutex);
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return mSwapDuration;
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}
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bool Settings::getUseAffinity() const {
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std::lock_guard<std::mutex> lock(mMutex);
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return mUseAffinity;
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}
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void Settings::notifyListeners() {
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// Grab a local copy of the listeners
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std::vector<Listener> listeners;
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{
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std::lock_guard<std::mutex> lock(mMutex);
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listeners = mListeners;
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}
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// Call the listeners without the lock held
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for (const auto& listener : listeners) {
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listener();
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}
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}
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} // namespace swappy
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