Add disable/enable camera service watchdog feature (aeb20dc9) · Commits · e / os / android_frameworks_av

services/camera/libcameraservice/CameraService.cpp

+27 −0

Original line number	Diff line number	Diff line
		@@ -1883,6 +1883,9 @@ Status CameraService::connectHelper(const sp<CALLBACK>& cameraCb, const String8&
		}
		}

		// Enable/disable camera service watchdog
		client->setCameraServiceWatchdog(mCameraServiceWatchdogEnabled);

		// Set rotate-and-crop override behavior
		if (mOverrideRotateAndCropMode != ANDROID_SCALER_ROTATE_AND_CROP_AUTO) {
		client->setRotateAndCropOverride(mOverrideRotateAndCropMode);
		@@ -4802,6 +4805,8 @@ status_t CameraService::shellCommand(int in, int out, int err, const Vector<Stri
		return handleSetCameraMute(args);
		} else if (args.size() >= 2 && args[0] == String16("watch")) {
		return handleWatchCommand(args, in, out);
		} else if (args.size() >= 2 && args[0] == String16("set-watchdog")) {
		return handleSetCameraServiceWatchdog(args);
		} else if (args.size() == 1 && args[0] == String16("help")) {
		printHelp(out);
		return OK;
		@@ -4895,6 +4900,28 @@ status_t CameraService::handleSetRotateAndCrop(const Vector<String16>& args) {
		return OK;
		}

		status_t CameraService::handleSetCameraServiceWatchdog(const Vector<String16>& args) {
		int enableWatchdog = atoi(String8(args[1]));

		if (enableWatchdog < 0 \|\| enableWatchdog > 1) return BAD_VALUE;

		Mutex::Autolock lock(mServiceLock);

		mCameraServiceWatchdogEnabled = enableWatchdog;

		const auto clients = mActiveClientManager.getAll();
		for (auto& current : clients) {
		if (current != nullptr) {
		const auto basicClient = current->getValue();
		if (basicClient.get() != nullptr) {
		basicClient->setCameraServiceWatchdog(enableWatchdog);
		}
		}
		}

		return OK;
		}

		status_t CameraService::handleGetRotateAndCrop(int out) {
		Mutex::Autolock lock(mServiceLock);

services/camera/libcameraservice/CameraService.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -338,6 +338,9 @@ public:
		// Set/reset camera mute
		virtual status_t setCameraMute(bool enabled) = 0;

		// Set Camera service watchdog
		virtual status_t setCameraServiceWatchdog(bool enabled) = 0;

		// The injection camera session to replace the internal camera
		// session.
		virtual status_t injectCamera(const String8& injectedCamId,
		@@ -1190,6 +1193,9 @@ private:
		// Handle 'watch' command as passed through 'cmd'
		status_t handleWatchCommand(const Vector<String16> &args, int inFd, int outFd);

		// Set the camera service watchdog
		status_t handleSetCameraServiceWatchdog(const Vector<String16>& args);

		// Enable tag monitoring of the given tags in provided clients
		status_t startWatchingTags(const Vector<String16> &args, int outFd);

		@@ -1275,6 +1281,9 @@ private:
		// Current camera mute mode
		bool mOverrideCameraMuteMode = false;

		// Camera Service watchdog flag
		bool mCameraServiceWatchdogEnabled = true;

		/**
		* A listener class that implements the IBinder::DeathRecipient interface
		* for use to call back the error state injected by the external camera, and

services/camera/libcameraservice/CameraServiceWatchdog.cpp

+11 −0

Original line number	Diff line number	Diff line
		@@ -64,6 +64,17 @@ void CameraServiceWatchdog::requestExit()
		}
		}

		void CameraServiceWatchdog::setEnabled(bool enable)
		{
		AutoMutex _l(mEnabledLock);

		if (enable) {
		mEnabled = true;
		} else {
		mEnabled = false;
		}
		}

		void CameraServiceWatchdog::stop(uint32_t tid)
		{
		AutoMutex _l(mWatchdogLock);

services/camera/libcameraservice/CameraServiceWatchdog.h

+32 −13

Original line number	Diff line number	Diff line
		@@ -21,10 +21,12 @@
		* expected duration has exceeded.
		* Notes on multi-threaded behaviors:
		* - The threadloop is blocked/paused when there are no calls being
		* monitored.
		* monitored (when the TID cycle to counter map is empty).
		* - The start and stop functions handle simultaneous call monitoring
		* and single call monitoring differently. See function documentation for
		* more details.
		* To disable/enable:
		* - adb shell cmd media.camera set-cameraservice-watchdog [0/1]
		*/

		#include <chrono>
		@@ -49,15 +51,19 @@ class CameraServiceWatchdog : public Thread {

		public:
		explicit CameraServiceWatchdog() : mPause(true), mMaxCycles(kMaxCycles),
		mCycleLengthMs(kCycleLengthMs) {};
		mCycleLengthMs(kCycleLengthMs), mEnabled(true) {};

		explicit CameraServiceWatchdog (size_t maxCycles, uint32_t cycleLengthMs) :
		mPause(true), mMaxCycles(maxCycles), mCycleLengthMs(cycleLengthMs) {};
		explicit CameraServiceWatchdog (size_t maxCycles, uint32_t cycleLengthMs, bool enabled) :
		mPause(true), mMaxCycles(maxCycles), mCycleLengthMs(cycleLengthMs), mEnabled(enabled)
		{};

		virtual ~CameraServiceWatchdog() {};

		virtual void requestExit();

		/** Enables/disables the watchdog */
		void setEnabled(bool enable);

		/** Used to wrap monitored calls in start and stop functions using custom timer values */
		template<typename T>
		auto watchThread(T func, uint32_t tid, uint32_t cycles, uint32_t cycleLength) {
		@@ -66,8 +72,13 @@ public:
		if (cycles != mMaxCycles \|\| cycleLength != mCycleLengthMs) {
		// Create another instance of the watchdog to prevent disruption
		// of timer for current monitored calls

		// Lock for mEnabled
		mEnabledLock.lock();
		sp<CameraServiceWatchdog> tempWatchdog =
		new CameraServiceWatchdog(cycles, cycleLength);
		new CameraServiceWatchdog(cycles, cycleLength, mEnabled);
		mEnabledLock.unlock();

		tempWatchdog->run("CameraServiceWatchdog");
		res = tempWatchdog->watchThread(func, tid);
		tempWatchdog->requestExit();
		@@ -84,11 +95,17 @@ public:
		/** Used to wrap monitored calls in start and stop functions using class timer values */
		template<typename T>
		auto watchThread(T func, uint32_t tid) {
		AutoMutex _l(mEnabledLock);

		auto res = NULL;

		if (mEnabled) {
		start(tid);
		res = func();
		stop(tid);
		} else {
		res = func();
		}

		return res;
		}
		@@ -110,10 +127,12 @@ private:
		virtual bool threadLoop();

		Mutex mWatchdogLock; // Lock for condition variable
		Mutex mEnabledLock; // Lock for enabled status
		Condition mWatchdogCondition; // Condition variable for stop/start
		bool mPause; // True if thread is currently paused
		bool mPause; // True if tid map is empty
		uint32_t mMaxCycles; // Max cycles
		uint32_t mCycleLengthMs; // Length of time elapsed per cycle
		bool mEnabled; // True if watchdog is enabled

		std::unordered_map<uint32_t, uint32_t> tidToCycleCounterMap; // Thread Id to cycle counter map
		};

services/camera/libcameraservice/api1/Camera2Client.cpp

+4 −0

Original line number	Diff line number	Diff line
		@@ -2294,6 +2294,10 @@ int32_t Camera2Client::getGlobalAudioRestriction() {
		return INVALID_OPERATION;
		}

		status_t Camera2Client::setCameraServiceWatchdog(bool enabled) {
		return mDevice->setCameraServiceWatchdog(enabled);
		}

		status_t Camera2Client::setRotateAndCropOverride(uint8_t rotateAndCrop) {
		if (rotateAndCrop > ANDROID_SCALER_ROTATE_AND_CROP_AUTO) return BAD_VALUE;