Merge "MH2 | Implement wakelock processing thread" (82b655e6) · Commits · e / os / android_hardware_interfaces

sensors/2.0/multihal/Android.bp

+4 −1

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@ cc_defaults {
		"libpower",
		"libutils",
		],
		cflags: ["-DLOG_TAG=\"SensorsMultiHal\""],
		}

		cc_binary {
		@@ -45,7 +46,6 @@ cc_binary {
		],
		init_rc: ["android.hardware.sensors@2.0-service-multihal.rc"],
		vintf_fragments: ["android.hardware.sensors@2.0-multihal.xml"],
		cflags: ["-DLOG_TAG=\"SensorsMultiHal\""],
		}

		cc_library_headers {
		@@ -66,4 +66,7 @@ cc_test_library {
		export_header_lib_headers: [
		"android.hardware.sensors@2.0-multihal.header",
		],
		shared_libs: [
		"libutils",
		],
		}

sensors/2.0/multihal/HalProxy.cpp

+118 −37

Original line number	Diff line number	Diff line
		@@ -24,6 +24,7 @@

		#include <dlfcn.h>

		#include <cinttypes>
		#include <fstream>
		#include <functional>
		#include <thread>
		@@ -35,6 +36,9 @@ namespace V2_0 {
		namespace implementation {

		using ::android::hardware::sensors::V2_0::EventQueueFlagBits;
		using ::android::hardware::sensors::V2_0::WakeLockQueueFlagBits;
		using ::android::hardware::sensors::V2_0::implementation::getTimeNow;
		using ::android::hardware::sensors::V2_0::implementation::kWakelockTimeoutNs;

		typedef ISensorsSubHal(SensorsHalGetSubHalFunc)(uint32_t);

		@@ -53,23 +57,23 @@ uint32_t setSubHalIndex(uint32_t sensorHandle, size_t subHalIndex) {
		HalProxy::HalProxy() {
		const char* kMultiHalConfigFile = "/vendor/etc/sensors/hals.conf";
		initializeSubHalListFromConfigFile(kMultiHalConfigFile);
		initializeSubHalCallbacksAndSensorList();
		init();
		}

		HalProxy::HalProxy(std::vector<ISensorsSubHal*>& subHalList) : mSubHalList(subHalList) {
		initializeSubHalCallbacksAndSensorList();
		init();
		}

		HalProxy::~HalProxy() {
		{
		std::lock_guard<std::mutex> lockGuard(mEventQueueWriteMutex);
		mPendingWritesRun = false;
		mThreadsRun.store(false);
		mWakelockCV.notify_one();
		mEventQueueWriteCV.notify_one();
		}
		if (mPendingWritesThread.joinable()) {
		mPendingWritesThread.join();
		}
		// TODO: Cleanup wakeup thread once it is implemented
		if (mWakelockThread.joinable()) {
		mWakelockThread.join();
		}
		}

		Return<void> HalProxy::getSensorsList(getSensorsList_cb _hidl_cb) {
		@@ -140,7 +144,7 @@ Return<Result> HalProxy::initialize(
		}

		mPendingWritesThread = std::thread(startPendingWritesThread, this);
		// TODO: start threads to read wake locks.
		mWakelockThread = std::thread(startWakelockThread, this);

		for (size_t i = 0; i < mSubHalList.size(); i++) {
		auto subHal = mSubHalList[i];
		@@ -322,7 +326,7 @@ void HalProxy::initializeSensorList() {
		}
		}

		void HalProxy::initializeSubHalCallbacksAndSensorList() {
		void HalProxy::init() {
		initializeSubHalCallbacks();
		initializeSensorList();
		}
		@@ -334,11 +338,12 @@ void HalProxy::startPendingWritesThread(HalProxy* halProxy) {
		void HalProxy::handlePendingWrites() {
		// TODO: Find a way to optimize locking strategy maybe using two mutexes instead of one.
		std::unique_lock<std::mutex> lock(mEventQueueWriteMutex);
		while (mPendingWritesRun) {
		while (mThreadsRun.load()) {
		mEventQueueWriteCV.wait(
		lock, [&] { return !mPendingWriteEventsQueue.empty() \|\| !mPendingWritesRun; });
		if (!mPendingWriteEventsQueue.empty() && mPendingWritesRun) {
		std::vector<Event>& pendingWriteEvents = mPendingWriteEventsQueue.front();
		lock, [&] { return !mPendingWriteEventsQueue.empty() \|\| !mThreadsRun.load(); });
		if (mThreadsRun.load()) {
		std::vector<Event>& pendingWriteEvents = mPendingWriteEventsQueue.front().first;
		size_t numWakeupEvents = mPendingWriteEventsQueue.front().second;
		size_t eventQueueSize = mEventQueue->getQuantumCount();
		size_t numToWrite = std::min(pendingWriteEvents.size(), eventQueueSize);
		lock.unlock();
		@@ -348,10 +353,16 @@ void HalProxy::handlePendingWrites() {
		pendingWriteEvents.data(), numToWrite,
		static_cast<uint32_t>(EventQueueFlagBits::EVENTS_READ),
		static_cast<uint32_t>(EventQueueFlagBits::READ_AND_PROCESS),
		kWakelockTimeoutNs, mEventQueueFlag)) {
		kPendingWriteTimeoutNs, mEventQueueFlag)) {
		ALOGE("Dropping %zu events after blockingWrite failed.", numToWrite);
		if (numWakeupEvents > 0) {
		if (pendingWriteEvents.size() > eventQueueSize) {
		decrementRefCountAndMaybeReleaseWakelock(
		countNumWakeupEvents(pendingWriteEvents, eventQueueSize));
		} else {
		mEventQueueFlag->wake(static_cast<uint32_t>(EventQueueFlagBits::READ_AND_PROCESS));
		decrementRefCountAndMaybeReleaseWakelock(numWakeupEvents);
		}
		}
		}
		lock.lock();
		if (pendingWriteEvents.size() > eventQueueSize) {
		@@ -366,9 +377,60 @@ void HalProxy::handlePendingWrites() {
		}
		}

		void HalProxy::postEventsToMessageQueue(const std::vector<Event>& events) {
		void HalProxy::startWakelockThread(HalProxy* halProxy) {
		halProxy->handleWakelocks();
		}

		void HalProxy::handleWakelocks() {
		std::unique_lock<std::recursive_mutex> lock(mWakelockMutex);
		while (mThreadsRun.load()) {
		mWakelockCV.wait(lock, [&] { return mWakelockRefCount > 0 \|\| !mThreadsRun.load(); });
		if (mThreadsRun.load()) {
		int64_t timeLeft;
		if (sharedWakelockDidTimeout(&timeLeft)) {
		resetSharedWakelock();
		} else {
		uint32_t numWakeLocksProcessed;
		lock.unlock();
		bool success = mWakeLockQueue->readBlocking(
		&numWakeLocksProcessed, 1, 0,
		static_cast<uint32_t>(WakeLockQueueFlagBits::DATA_WRITTEN), timeLeft);
		lock.lock();
		if (success) {
		decrementRefCountAndMaybeReleaseWakelock(
		static_cast<size_t>(numWakeLocksProcessed));
		}
		}
		}
		}
		resetSharedWakelock();
		}

		bool HalProxy::sharedWakelockDidTimeout(int64_t* timeLeft) {
		bool didTimeout;
		int64_t duration = getTimeNow() - mWakelockTimeoutStartTime;
		if (duration > kWakelockTimeoutNs) {
		didTimeout = true;
		} else {
		didTimeout = false;
		*timeLeft = kWakelockTimeoutNs - duration;
		}
		return didTimeout;
		}

		void HalProxy::resetSharedWakelock() {
		std::lock_guard<std::recursive_mutex> lockGuard(mWakelockMutex);
		decrementRefCountAndMaybeReleaseWakelock(mWakelockRefCount);
		mWakelockTimeoutResetTime = getTimeNow();
		}

		void HalProxy::postEventsToMessageQueue(const std::vector<Event>& events, size_t numWakeupEvents,
		ScopedWakelock wakelock) {
		size_t numToWrite = 0;
		std::lock_guard<std::mutex> lock(mEventQueueWriteMutex);
		if (wakelock.isLocked()) {
		incrementRefCountAndMaybeAcquireWakelock(numWakeupEvents);
		}
		if (mPendingWriteEventsQueue.empty()) {
		numToWrite = std::min(events.size(), mEventQueue->availableToWrite());
		if (numToWrite > 0) {
		@@ -384,28 +446,37 @@ void HalProxy::postEventsToMessageQueue(const std::vector<Event>& events) {
		if (numToWrite < events.size()) {
		// TODO: Bound the mPendingWriteEventsQueue so that we do not trigger OOMs if framework
		// stalls
		mPendingWriteEventsQueue.push(
		std::vector<Event>(events.begin() + numToWrite, events.end()));
		std::vector<Event> eventsLeft(events.begin() + numToWrite, events.end());
		mPendingWriteEventsQueue.push({eventsLeft, numWakeupEvents});
		mEventQueueWriteCV.notify_one();
		}
		}

		// TODO: Implement the wakelock timeout in these next two methods. Also pass in the subhal
		// index for better tracking.

		void HalProxy::incrementRefCountAndMaybeAcquireWakelock() {
		std::lock_guard<std::mutex> lockGuard(mWakelockRefCountMutex);
		bool HalProxy::incrementRefCountAndMaybeAcquireWakelock(size_t delta,
		int64_t* timeoutStart /* = nullptr */) {
		if (!mThreadsRun.load()) return false;
		std::lock_guard<std::recursive_mutex> lockGuard(mWakelockMutex);
		if (mWakelockRefCount == 0) {
		acquire_wake_lock(PARTIAL_WAKE_LOCK, kWakeLockName);
		acquire_wake_lock(PARTIAL_WAKE_LOCK, kWakelockName);
		mWakelockCV.notify_one();
		}
		mWakelockRefCount++;
		mWakelockTimeoutStartTime = getTimeNow();
		mWakelockRefCount += delta;
		if (timeoutStart != nullptr) {
		*timeoutStart = mWakelockTimeoutStartTime;
		}
		return true;
		}

		void HalProxy::decrementRefCountAndMaybeReleaseWakelock() {
		std::lock_guard<std::mutex> lockGuard(mWakelockRefCountMutex);
		mWakelockRefCount--;
		void HalProxy::decrementRefCountAndMaybeReleaseWakelock(size_t delta,
		int64_t timeoutStart /* = -1 */) {
		if (!mThreadsRun.load()) return;
		std::lock_guard<std::recursive_mutex> lockGuard(mWakelockMutex);
		if (timeoutStart == -1) timeoutStart = mWakelockTimeoutResetTime;
		if (mWakelockRefCount == 0 \|\| timeoutStart < mWakelockTimeoutResetTime) return;
		mWakelockRefCount -= std::min(mWakelockRefCount, delta);
		if (mWakelockRefCount == 0) {
		release_wake_lock(kWakeLockName);
		release_wake_lock(kWakelockName);
		}
		}

		@@ -427,6 +498,17 @@ ISensorsSubHal* HalProxy::getSubHalForSensorHandle(uint32_t sensorHandle) {
		return mSubHalList[static_cast<size_t>(sensorHandle >> 24)];
		}

		size_t HalProxy::countNumWakeupEvents(const std::vector<Event>& events, size_t n) {
		size_t numWakeupEvents = 0;
		for (size_t i = 0; i < n; i++) {
		int32_t sensorHandle = events[i].sensorHandle;
		if (mSensors[sensorHandle].flags & static_cast<uint32_t>(V1_0::SensorFlagBits::WAKE_UP)) {
		numWakeupEvents++;
		}
		}
		return numWakeupEvents;
		}

		uint32_t HalProxy::clearSubHalIndex(uint32_t sensorHandle) {
		return sensorHandle & (~kSensorHandleSubHalIndexMask);
		}
		@@ -436,7 +518,7 @@ bool HalProxy::subHalIndexIsClear(uint32_t sensorHandle) {
		}

		void HalProxyCallback::postEvents(const std::vector<Event>& events, ScopedWakelock wakelock) {
		(void)wakelock;
		if (events.empty() \|\| !mHalProxy->areThreadsRunning()) return;
		size_t numWakeupEvents;
		std::vector<Event> processedEvents = processEvents(events, &numWakeupEvents);
		if (numWakeupEvents > 0) {
		@@ -450,8 +532,7 @@ void HalProxyCallback::postEvents(const std::vector<Event>& events, ScopedWakelo
		" w/ index %zu.",
		mSubHalIndex);
		}

		mHalProxy->postEventsToMessageQueue(processedEvents);
		mHalProxy->postEventsToMessageQueue(events, numWakeupEvents, std::move(wakelock));
		}

		ScopedWakelock HalProxyCallback::createScopedWakelock(bool lock) {
		@@ -461,13 +542,13 @@ ScopedWakelock HalProxyCallback::createScopedWakelock(bool lock) {

		std::vector<Event> HalProxyCallback::processEvents(const std::vector<Event>& events,
		size_t* numWakeupEvents) const {
		std::vector<Event> eventsOut;
		*numWakeupEvents = 0;
		std::vector<Event> eventsOut;
		for (Event event : events) {
		event.sensorHandle = setSubHalIndex(event.sensorHandle, mSubHalIndex);
		eventsOut.push_back(event);
		if ((mHalProxy->getSensorInfo(event.sensorHandle).flags & V1_0::SensorFlagBits::WAKE_UP) !=
		0) {
		const SensorInfo& sensor = mHalProxy->getSensorInfo(event.sensorHandle);
		if ((sensor.flags & V1_0::SensorFlagBits::WAKE_UP) != 0) {
		(*numWakeupEvents)++;
		}
		}

sensors/2.0/multihal/ScopedWakelock.cpp

+8 −4

Original line number	Diff line number	Diff line
		@@ -22,18 +22,22 @@ namespace sensors {
		namespace V2_0 {
		namespace implementation {

		int64_t getTimeNow() {
		return std::chrono::duration_cast<std::chrono::nanoseconds>(
		std::chrono::system_clock::now().time_since_epoch())
		.count();
		}

		ScopedWakelock::ScopedWakelock(IScopedWakelockRefCounter* refCounter, bool locked)
		: mRefCounter(refCounter), mLocked(locked) {
		// TODO: Move this implementation into HalProxy object instead
		if (mLocked) {
		mRefCounter->incrementRefCountAndMaybeAcquireWakelock();
		mLocked = mRefCounter->incrementRefCountAndMaybeAcquireWakelock(1, &mCreatedAtTimeNs);
		}
		}

		ScopedWakelock::~ScopedWakelock() {
		// TODO: Move this implementation into HalProxy object instead
		if (mLocked) {
		mRefCounter->decrementRefCountAndMaybeReleaseWakelock();
		mRefCounter->decrementRefCountAndMaybeReleaseWakelock(1, mCreatedAtTimeNs);
		}
		}

sensors/2.0/multihal/include/HalProxy.h

+86 −38

Original line number	Diff line number	Diff line
		@@ -16,9 +16,11 @@

		#pragma once

		#include "ScopedWakelock.h"
		#include "SubHal.h"

		#include <android/hardware/sensors/2.0/ISensors.h>
		#include <android/hardware/sensors/2.0/types.h>
		#include <fmq/MessageQueue.h>
		#include <hardware_legacy/power.h>
		#include <hidl/MQDescriptor.h>
		@@ -30,6 +32,7 @@
		#include <mutex>
		#include <queue>
		#include <thread>
		#include <utility>

		namespace android {
		namespace hardware {
		@@ -100,45 +103,41 @@ class HalProxy : public ISensors, public IScopedWakelockRefCounter {
		Return<void> onDynamicSensorsDisconnected(const hidl_vec<int32_t>& dynamicSensorHandlesRemoved,
		int32_t subHalIndex);

		// Below methods follow IScopedWakelockRefCounter

		/**
		* Increment ref count and maybe acquire wakelock.
		*/
		void incrementRefCountAndMaybeAcquireWakelock() override;

		/**
		* Decrement ref count and maybe release wakelock.
		*/
		void decrementRefCountAndMaybeReleaseWakelock() override;

		// Below methods are for HalProxyCallback

		/**
		* Post events to the event message queue if there is room to write them. Otherwise post the
		* remaining events to a background thread for a blocking write with a 5 second timeout.
		* remaining events to a background thread for a blocking write with a kPendingWriteTimeoutNs
		* timeout.
		*
		* @param events The list of events to post to the message queue.
		* @param numWakeupEvents The number of wakeup events in events.
		* @param wakelock The wakelock associated with this post of events.
		*/
		void postEventsToMessageQueue(const std::vector<Event>& events);
		void postEventsToMessageQueue(const std::vector<Event>& events, size_t numWakeupEvents,
		ScopedWakelock wakelock);

		/**
		* Get the SensorInfo object associated with the sensorHandle.
		* Get the sensor info associated with that sensorHandle.
		*
		* @param sensorHandle The sensorHandle for the sensor.
		* @param sensorHandle The sensor handle.
		*
		* @return The sensor info for the sensor.
		* @return The sensor info object in the mapping.
		*/
		const SensorInfo& getSensorInfo(uint32_t sensorHandle) const {
		return mSensors.at(sensorHandle);
		}
		const SensorInfo& getSensorInfo(uint32_t sensorHandle) { return mSensors[sensorHandle]; }

		bool areThreadsRunning() { return mThreadsRun.load(); }

		// Below methods are from IScopedWakelockRefCounter interface
		bool incrementRefCountAndMaybeAcquireWakelock(size_t delta,
		int64_t* timeoutStart = nullptr) override;

		void decrementRefCountAndMaybeReleaseWakelock(size_t delta, int64_t timeoutStart = -1) override;

		private:
		using EventMessageQueue = MessageQueue<Event, kSynchronizedReadWrite>;
		using WakeLockMessageQueue = MessageQueue<uint32_t, kSynchronizedReadWrite>;

		const char* kWakeLockName = "SensorsHAL_WAKEUP";

		/**
		* The Event FMQ where sensor events are written
		*/
		@@ -185,23 +184,17 @@ class HalProxy : public ISensors, public IScopedWakelockRefCounter {
		//! The single subHal that supports directChannel reporting.
		ISensorsSubHal* mDirectChannelSubHal = nullptr;

		//! The mutex for the event queue.
		std::mutex mEventQueueMutex;

		//! The timeout for each pending write on background thread for events.
		static const int64_t kWakelockTimeoutNs = 5 * INT64_C(1000000000) /* 5 seconds */;

		//! The scoped wakelock ref count.
		size_t mWakelockRefCount = 0;

		//! The mutex guarding the mWakelockRefCount variable
		std::mutex mWakelockRefCountMutex;
		static const int64_t kPendingWriteTimeoutNs = 5 * INT64_C(1000000000) /* 5 seconds */;

		//! The bit mask used to get the subhal index from a sensor handle.
		static constexpr uint32_t kSensorHandleSubHalIndexMask = 0xFF000000;

		//! The events that were not able to be written to fmq right away
		std::queue<std::vector<Event>> mPendingWriteEventsQueue;
		/**
		* A FIFO queue of pairs of vector of events and the number of wakeup events in that vector
		* which are waiting to be written to the events fmq in the background thread.
		*/
		std::queue<std::pair<std::vector<Event>, size_t>> mPendingWriteEventsQueue;

		//! The mutex protecting writing to the fmq and the pending events queue
		std::mutex mEventQueueWriteMutex;
		@@ -212,12 +205,32 @@ class HalProxy : public ISensors, public IScopedWakelockRefCounter {
		//! The thread object ptr that handles pending writes
		std::thread mPendingWritesThread;

		//! The bool indicating whether to end the pending writes background thread or not
		bool mPendingWritesRun = true;
		//! The thread object that handles wakelocks
		std::thread mWakelockThread;

		//! The bool indicating whether to end the threads started in initialize
		std::atomic_bool mThreadsRun = true;

		//! The mutex protecting access to the dynamic sensors added and removed methods.
		std::mutex mDynamicSensorsMutex;

		// WakelockRefCount membar vars below

		//! The mutex protecting the wakelock refcount and subsequent wakelock releases and
		//! acquisitions
		std::recursive_mutex mWakelockMutex;

		std::condition_variable_any mWakelockCV;

		//! The refcount of how many ScopedWakelocks and pending wakeup events are active
		size_t mWakelockRefCount = 0;

		int64_t mWakelockTimeoutStartTime = getTimeNow();

		int64_t mWakelockTimeoutResetTime = getTimeNow();

		const char* kWakelockName = "SensorsMultiHal";

		/**
		* Initialize the list of SubHal objects in mSubHalList by reading from dynamic libraries
		* listed in a config file.
		@@ -236,9 +249,9 @@ class HalProxy : public ISensors, public IScopedWakelockRefCounter {
		void initializeSensorList();

		/**
		* Calls the above two helper methods which are shared in both ctors.
		* Calls the helper methods that all ctors use.
		*/
		void initializeSubHalCallbacksAndSensorList();
		void init();

		/**
		* Starts the thread that handles pending writes to event fmq.
		@@ -250,6 +263,31 @@ class HalProxy : public ISensors, public IScopedWakelockRefCounter {
		//! Handles the pending writes on events to eventqueue.
		void handlePendingWrites();

		/**
		* Starts the thread that handles decrementing the ref count on wakeup events processed by the
		* framework and timing out wakelocks.
		*
		* @param halProxy The HalProxy object pointer.
		*/
		static void startWakelockThread(HalProxy* halProxy);

		//! Handles the wakelocks.
		void handleWakelocks();

		/**
		* @param timeLeft The variable that should be set to the timeleft before timeout will occur or
		* unmodified if timeout occurred.
		*
		* @return true if the shared wakelock has been held passed the timeout and should be released
		*/
		bool sharedWakelockDidTimeout(int64_t* timeLeft);

		/**
		* Reset all the member variables associated with the wakelock ref count and maybe release
		* the shared wakelock.
		*/
		void resetSharedWakelock();

		/**
		* Clear direct channel flags if the HalProxy has already chosen a subhal as its direct channel
		* subhal. Set the directChannelSubHal pointer to the subHal passed in if this is the first
		@@ -269,6 +307,16 @@ class HalProxy : public ISensors, public IScopedWakelockRefCounter {
		*/
		ISensorsSubHal* getSubHalForSensorHandle(uint32_t sensorHandle);

		/**
		* Count the number of wakeup events in the first n events of the vector.
		*
		* @param events The vector of Event objects.
		* @param n The end index not inclusive of events to consider.
		*
		* @return The number of wakeup events of the considered events.
		*/
		size_t countNumWakeupEvents(const std::vector<Event>& events, size_t n);

		/*
		* Clear out the subhal index bytes from a sensorHandle.
		*

sensors/2.0/multihal/include/ScopedWakelock.h

+31 −4

Original line number	Diff line number	Diff line
		@@ -16,7 +16,7 @@

		#pragma once

		#include <mutex>
		#include <android/hardware/sensors/2.0/types.h>

		namespace android {
		namespace hardware {
		@@ -24,10 +24,36 @@ namespace sensors {
		namespace V2_0 {
		namespace implementation {

		class IScopedWakelockRefCounter {
		using ::android::hardware::sensors::V2_0::SensorTimeout;

		const int64_t kWakelockTimeoutNs =
		static_cast<int64_t>(SensorTimeout::WAKE_LOCK_SECONDS) * INT64_C(1000000000);

		int64_t getTimeNow();

		class IScopedWakelockRefCounter : public RefBase {
		public:
		virtual void incrementRefCountAndMaybeAcquireWakelock() = 0;
		virtual void decrementRefCountAndMaybeReleaseWakelock() = 0;
		/**
		* Increment the wakelock ref count and maybe acquire the shared wakelock if incrementing
		* from 0 then return the time of incrementing back to caller.
		*
		* @param delta The amount to change ref count by.
		* @param timeoutStart The ptr to the timestamp in ns that the increment occurred which will be
		* set in the function or nullptr if not specified.
		*
		* @return true if successfully incremented the wakelock ref count.
		*/
		virtual bool incrementRefCountAndMaybeAcquireWakelock(size_t delta,
		int64_t* timeoutStart = nullptr) = 0;
		/**
		* Decrement the wakelock ref count and maybe release wakelock if ref count ends up 0.
		*
		* @param delta The amount to change ref count by.
		* @param timeoutStart The timestamp in ns that the calling context kept track of when
		* incrementing the ref count or -1 by default
		*/
		virtual void decrementRefCountAndMaybeReleaseWakelock(size_t delta,
		int64_t timeoutStart = -1) = 0;
		// Virtual dtor needed for compilation success
		virtual ~IScopedWakelockRefCounter(){};
		};
		@@ -64,6 +90,7 @@ class ScopedWakelock {
		private:
		friend class HalProxyCallback;
		IScopedWakelockRefCounter* mRefCounter;
		int64_t mCreatedAtTimeNs;
		bool mLocked;
		ScopedWakelock(IScopedWakelockRefCounter* refCounter, bool locked);
		ScopedWakelock(const ScopedWakelock&) = delete;