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Diffstat (limited to 'include/powermanager/PowerHalController.h')
-rw-r--r-- | include/powermanager/PowerHalController.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/include/powermanager/PowerHalController.h b/include/powermanager/PowerHalController.h new file mode 100644 index 0000000000..71a36d09e5 --- /dev/null +++ b/include/powermanager/PowerHalController.h @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2020 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_POWERHALCONTROLLER_H +#define ANDROID_POWERHALCONTROLLER_H + +#include <android-base/thread_annotations.h> +#include <android/hardware/power/Boost.h> +#include <android/hardware/power/IPower.h> +#include <android/hardware/power/IPowerHintSession.h> +#include <android/hardware/power/Mode.h> +#include <powermanager/PowerHalWrapper.h> + +namespace android { + +namespace power { + +// ------------------------------------------------------------------------------------------------- + +// Connects to underlying Power HAL handles. +class HalConnector { +public: + HalConnector() = default; + virtual ~HalConnector() = default; + + virtual std::unique_ptr<HalWrapper> connect(); + virtual void reset(); +}; + +// ------------------------------------------------------------------------------------------------- + +// Controller for Power HAL handle. +// This relies on HalConnector to connect to the underlying Power HAL +// service and reconnects to it after each failed api call. This also ensures +// connecting to the service is thread-safe. +class PowerHalController : public HalWrapper { +public: + PowerHalController() : PowerHalController(std::make_unique<HalConnector>()) {} + explicit PowerHalController(std::unique_ptr<HalConnector> connector) + : mHalConnector(std::move(connector)) {} + virtual ~PowerHalController() = default; + + void init(); + + virtual HalResult<void> setBoost(hardware::power::Boost boost, int32_t durationMs) override; + virtual HalResult<void> setMode(hardware::power::Mode mode, bool enabled) override; + virtual HalResult<sp<hardware::power::IPowerHintSession>> createHintSession( + int32_t tgid, int32_t uid, const std::vector<int32_t>& threadIds, + int64_t durationNanos) override; + virtual HalResult<int64_t> getHintSessionPreferredRate() override; + +private: + std::mutex mConnectedHalMutex; + std::unique_ptr<HalConnector> mHalConnector; + + // Shared pointers to keep global pointer and allow local copies to be used in + // different threads + std::shared_ptr<HalWrapper> mConnectedHal GUARDED_BY(mConnectedHalMutex) = nullptr; + const std::shared_ptr<HalWrapper> mDefaultHal = std::make_shared<EmptyHalWrapper>(); + + std::shared_ptr<HalWrapper> initHal(); + template <typename T> + HalResult<T> processHalResult(HalResult<T> result, const char* functionName); +}; + +// ------------------------------------------------------------------------------------------------- + +}; // namespace power + +}; // namespace android + +#endif // ANDROID_POWERHALCONTROLLER_H |