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86 lines
3.1 KiB
86 lines
3.1 KiB
/*
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* Copyright (C) 2020 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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#ifndef ANDROID_POWERHALCONTROLLER_H
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#define ANDROID_POWERHALCONTROLLER_H
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#include <android-base/thread_annotations.h>
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#include <android/hardware/power/Boost.h>
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#include <android/hardware/power/IPower.h>
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#include <android/hardware/power/IPowerHintSession.h>
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#include <android/hardware/power/Mode.h>
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#include <powermanager/PowerHalWrapper.h>
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namespace android {
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namespace power {
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// -------------------------------------------------------------------------------------------------
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// Connects to underlying Power HAL handles.
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class HalConnector {
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public:
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HalConnector() = default;
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virtual ~HalConnector() = default;
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virtual std::unique_ptr<HalWrapper> connect();
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virtual void reset();
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};
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// -------------------------------------------------------------------------------------------------
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// Controller for Power HAL handle.
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// This relies on HalConnector to connect to the underlying Power HAL
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// service and reconnects to it after each failed api call. This also ensures
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// connecting to the service is thread-safe.
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class PowerHalController : public HalWrapper {
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public:
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PowerHalController() : PowerHalController(std::make_unique<HalConnector>()) {}
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explicit PowerHalController(std::unique_ptr<HalConnector> connector)
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: mHalConnector(std::move(connector)) {}
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virtual ~PowerHalController() = default;
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void init();
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virtual HalResult<void> setBoost(hardware::power::Boost boost, int32_t durationMs) override;
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virtual HalResult<void> setMode(hardware::power::Mode mode, bool enabled) override;
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virtual HalResult<sp<hardware::power::IPowerHintSession>> createHintSession(
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int32_t tgid, int32_t uid, const std::vector<int32_t>& threadIds,
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int64_t durationNanos) override;
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virtual HalResult<int64_t> getHintSessionPreferredRate() override;
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private:
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std::mutex mConnectedHalMutex;
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std::unique_ptr<HalConnector> mHalConnector;
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// Shared pointers to keep global pointer and allow local copies to be used in
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// different threads
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std::shared_ptr<HalWrapper> mConnectedHal GUARDED_BY(mConnectedHalMutex) = nullptr;
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const std::shared_ptr<HalWrapper> mDefaultHal = std::make_shared<EmptyHalWrapper>();
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std::shared_ptr<HalWrapper> initHal();
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template <typename T>
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HalResult<T> processHalResult(HalResult<T> result, const char* functionName);
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};
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// -------------------------------------------------------------------------------------------------
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}; // namespace power
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}; // namespace android
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#endif // ANDROID_POWERHALCONTROLLER_H
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