Merge "ComposerClient 2.4: Clean cache on hotplug" into sc-dev (ab9bae0d) · Commits · e / os / android_hardware_interfaces

graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h

+52 −51

Original line number	Diff line number	Diff line
		@@ -98,7 +98,7 @@ class ComposerClientImpl : public Interface {
		// display change and thus the framework may want to reallocate buffers. We
		// need to free all cached handles, since they are holding a strong reference
		// to the underlying buffers.
		cleanDisplayResources(display);
		cleanDisplayResources(display, mResources, mHal);
		mResources->removeDisplay(display);
		}
		mResources->addPhysicalDisplay(display);
		@@ -125,56 +125,6 @@ class ComposerClientImpl : public Interface {
		Hal* const mHal;
		const sp<IComposerCallback> mCallback;
		ComposerResources* const mResources;

		void cleanDisplayResources(Display display) {
		size_t cacheSize;
		Error err = mResources->getDisplayClientTargetCacheSize(display, &cacheSize);
		if (err == Error::NONE) {
		for (int slot = 0; slot < cacheSize; slot++) {
		ComposerResources::ReplacedHandle replacedBuffer(/isBuffer/ true);
		// Replace the buffer slots with NULLs. Keep the old handle until it is
		// replaced in ComposerHal, otherwise we risk leaving a dangling pointer.
		const native_handle_t* clientTarget = nullptr;
		err = mResources->getDisplayClientTarget(display, slot, /useCache/ true,
		/rawHandle/ nullptr, &clientTarget,
		&replacedBuffer);
		if (err != Error::NONE) {
		continue;
		}
		const std::vector<hwc_rect_t> damage;
		err = mHal->setClientTarget(display, clientTarget, /fence/ -1, 0, damage);
		ALOGE_IF(err != Error::NONE,
		"Can't clean slot %d of the client target buffer"
		"cache for display %" PRIu64,
		slot, display);
		}
		} else {
		ALOGE("Can't clean client target cache for display %" PRIu64, display);
		}

		err = mResources->getDisplayOutputBufferCacheSize(display, &cacheSize);
		if (err == Error::NONE) {
		for (int slot = 0; slot < cacheSize; slot++) {
		// Replace the buffer slots with NULLs. Keep the old handle until it is
		// replaced in ComposerHal, otherwise we risk leaving a dangling pointer.
		ComposerResources::ReplacedHandle replacedBuffer(/isBuffer/ true);
		const native_handle_t* outputBuffer = nullptr;
		err = mResources->getDisplayOutputBuffer(display, slot, /useCache/ true,
		/rawHandle/ nullptr, &outputBuffer,
		&replacedBuffer);
		if (err != Error::NONE) {
		continue;
		}
		err = mHal->setOutputBuffer(display, outputBuffer, /fence/ -1);
		ALOGE_IF(err != Error::NONE,
		"Can't clean slot %d of the output buffer cache"
		"for display %" PRIu64,
		slot, display);
		}
		} else {
		ALOGE("Can't clean output buffer cache for display %" PRIu64, display);
		}
		}
		};

		Return<void> registerCallback(const sp<IComposerCallback>& callback) override {
		@@ -380,6 +330,57 @@ class ComposerClientImpl : public Interface {
		return std::make_unique<ComposerCommandEngine>(mHal, mResources.get());
		}

		static void cleanDisplayResources(Display display, ComposerResources* const resources,
		Hal* const hal) {
		size_t cacheSize;
		Error err = resources->getDisplayClientTargetCacheSize(display, &cacheSize);
		if (err == Error::NONE) {
		for (int slot = 0; slot < cacheSize; slot++) {
		ComposerResources::ReplacedHandle replacedBuffer(/isBuffer/ true);
		// Replace the buffer slots with NULLs. Keep the old handle until it is
		// replaced in ComposerHal, otherwise we risk leaving a dangling pointer.
		const native_handle_t* clientTarget = nullptr;
		err = resources->getDisplayClientTarget(display, slot, /useCache/ true,
		/rawHandle/ nullptr, &clientTarget,
		&replacedBuffer);
		if (err != Error::NONE) {
		continue;
		}
		const std::vector<hwc_rect_t> damage;
		err = hal->setClientTarget(display, clientTarget, /fence/ -1, 0, damage);
		ALOGE_IF(err != Error::NONE,
		"Can't clean slot %d of the client target buffer"
		"cache for display %" PRIu64,
		slot, display);
		}
		} else {
		ALOGE("Can't clean client target cache for display %" PRIu64, display);
		}

		err = resources->getDisplayOutputBufferCacheSize(display, &cacheSize);
		if (err == Error::NONE) {
		for (int slot = 0; slot < cacheSize; slot++) {
		// Replace the buffer slots with NULLs. Keep the old handle until it is
		// replaced in ComposerHal, otherwise we risk leaving a dangling pointer.
		ComposerResources::ReplacedHandle replacedBuffer(/isBuffer/ true);
		const native_handle_t* outputBuffer = nullptr;
		err = resources->getDisplayOutputBuffer(display, slot, /useCache/ true,
		/rawHandle/ nullptr, &outputBuffer,
		&replacedBuffer);
		if (err != Error::NONE) {
		continue;
		}
		err = hal->setOutputBuffer(display, outputBuffer, /fence/ -1);
		ALOGE_IF(err != Error::NONE,
		"Can't clean slot %d of the output buffer cache"
		"for display %" PRIu64,
		slot, display);
		}
		} else {
		ALOGE("Can't clean output buffer cache for display %" PRIu64, display);
		}
		}

		void destroyResources() {
		// We want to call hwc2_close here (and move hwc2_open to the
		// constructor), with the assumption that hwc2_close would

graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h

+14 −3

Original line number	Diff line number	Diff line
		@@ -45,12 +45,21 @@ class ComposerClientImpl : public V2_3::hal::detail::ComposerClientImpl<Interfac

		class HalEventCallback : public Hal::EventCallback_2_4 {
		public:
		HalEventCallback(const sp<IComposerCallback> callback,
		HalEventCallback(Hal* hal, const sp<IComposerCallback> callback,
		V2_1::hal::ComposerResources* resources)
		: mCallback(callback), mResources(resources) {}
		: mHal(hal), mCallback(callback), mResources(resources) {}

		void onHotplug(Display display, IComposerCallback::Connection connected) override {
		if (connected == IComposerCallback::Connection::CONNECTED) {
		if (mResources->hasDisplay(display)) {
		// This is a subsequent hotplug "connected" for a display. This signals a
		// display change and thus the framework may want to reallocate buffers. We
		// need to free all cached handles, since they are holding a strong reference
		// to the underlying buffers.
		V2_1::hal::detail::ComposerClientImpl<Interface, Hal>::cleanDisplayResources(
		display, mResources, mHal);
		mResources->removeDisplay(display);
		}
		mResources->addPhysicalDisplay(display);
		} else if (connected == IComposerCallback::Connection::DISCONNECTED) {
		mResources->removeDisplay(display);
		@@ -91,13 +100,15 @@ class ComposerClientImpl : public V2_3::hal::detail::ComposerClientImpl<Interfac
		}

		protected:
		Hal* const mHal;
		const sp<IComposerCallback> mCallback;
		V2_1::hal::ComposerResources* const mResources;
		};

		Return<void> registerCallback_2_4(const sp<IComposerCallback>& callback) override {
		// no locking as we require this function to be called only once
		mHalEventCallback_2_4 = std::make_unique<HalEventCallback>(callback, mResources.get());
		mHalEventCallback_2_4 =
		std::make_unique<HalEventCallback>(mHal, callback, mResources.get());
		mHal->registerEventCallback_2_4(mHalEventCallback_2_4.get());
		return Void();
		}