Merge "Codec2Client: Retry creation on failed transaction" into qt-qpr1-dev (fc69989a) · Commits · e / os / android_frameworks_av

media/codec2/hidl/client/client.cpp

+78 −62

Original line number	Diff line number	Diff line
		@@ -125,6 +125,9 @@ public:
		if (!mClient) {
		mClient = Codec2Client::_CreateFromIndex(mIndex);
		}
		CHECK(mClient) << "Failed to create Codec2Client to service \""
		<< GetServiceNames()[mIndex] << "\". (Index = "
		<< mIndex << ").";
		return mClient;
		}

		@@ -832,6 +835,7 @@ std::shared_ptr<Codec2Client> Codec2Client::_CreateFromIndex(size_t index) {

		c2_status_t Codec2Client::ForAllServices(
		const std::string &key,
		size_t numberOfAttempts,
		std::function<c2_status_t(const std::shared_ptr<Codec2Client>&)>
		predicate) {
		c2_status_t status = C2_NO_INIT; // no IComponentStores present
		@@ -860,20 +864,28 @@ c2_status_t Codec2Client::ForAllServices(

		for (size_t index : indices) {
		Cache& cache = Cache::List()[index];
		for (size_t tries = numberOfAttempts; tries > 0; --tries) {
		std::shared_ptr<Codec2Client> client{cache.getClient()};
		if (client) {
		status = predicate(client);
		if (status == C2_OK) {
		std::scoped_lock lock{key2IndexMutex};
		key2Index[key] = index; // update last known client index
		return C2_OK;
		}
		} else if (status == C2_TRANSACTION_FAILED) {
		LOG(WARNING) << "\"" << key << "\" failed for service \""
		<< client->getName()
		<< "\" due to transaction failure. "
		<< "(Service may have crashed.)"
		<< (tries > 1 ? " Retrying..." : "");
		cache.invalidate();
		continue;
		}
		if (wasMapped) {
		LOG(INFO) << "Could not find \"" << key << "\""
		" in the last instance. Retrying...";
		LOG(INFO) << "\"" << key << "\" became invalid in service \""
		<< client->getName() << "\". Retrying...";
		wasMapped = false;
		cache.invalidate();
		}
		break;
		}
		}
		return status; // return the last status from a valid client
		@@ -885,10 +897,12 @@ std::shared_ptr<Codec2Client::Component>
		const std::shared_ptr<Listener>& listener,
		std::shared_ptr<Codec2Client>* owner,
		size_t numberOfAttempts) {
		while (true) {
		std::string key{"create:"};
		key.append(componentName);
		std::shared_ptr<Component> component;
		c2_status_t status = ForAllServices(
		componentName,
		key,
		numberOfAttempts,
		[owner, &component, componentName, &listener](
		const std::shared_ptr<Codec2Client> &client)
		-> c2_status_t {
		@@ -908,23 +922,25 @@ std::shared_ptr<Codec2Client::Component>
		}
		return status;
		});
		if (numberOfAttempts > 0 && status == C2_TRANSACTION_FAILED) {
		--numberOfAttempts;
		continue;
		if (status != C2_OK) {
		LOG(DEBUG) << "Failed to create component \"" << componentName
		<< "\" from all known services. "
		"Last returned status = " << status << ".";
		}
		return component;
		}
		}

		std::shared_ptr<Codec2Client::Interface>
		Codec2Client::CreateInterfaceByName(
		const char* interfaceName,
		std::shared_ptr<Codec2Client>* owner,
		size_t numberOfAttempts) {
		while (true) {
		std::string key{"create:"};
		key.append(interfaceName);
		std::shared_ptr<Interface> interface;
		c2_status_t status = ForAllServices(
		interfaceName,
		key,
		numberOfAttempts,
		[owner, &interface, interfaceName](
		const std::shared_ptr<Codec2Client> &client)
		-> c2_status_t {
		@@ -943,13 +959,13 @@ std::shared_ptr<Codec2Client::Interface>
		}
		return status;
		});
		if (numberOfAttempts > 0 && status == C2_TRANSACTION_FAILED) {
		--numberOfAttempts;
		continue;
		if (status != C2_OK) {
		LOG(DEBUG) << "Failed to create interface \"" << interfaceName
		<< "\" from all known services. "
		"Last returned status = " << status << ".";
		}
		return interface;
		}
		}

		std::vector<C2Component::Traits> const& Codec2Client::ListComponents() {
		static std::vector<C2Component::Traits> sList{[]() {

media/codec2/hidl/client/include/codec2/hidl/client.h

+17 −3

Original line number	Diff line number	Diff line
		@@ -208,11 +208,25 @@ struct Codec2Client : public Codec2ConfigurableClient {
		protected:
		sp<Base> mBase;

		// Finds the first store where the predicate returns OK, and returns the last
		// predicate result. Uses key to remember the last store found, and if cached,
		// it tries that store before trying all stores (one retry).
		// Finds the first store where the predicate returns C2_OK and returns the
		// last predicate result. The predicate will be tried on all stores. The
		// function will return C2_OK the first time the predicate returns C2_OK,
		// or it will return the value from the last time that predicate is tried.
		// (The latter case corresponds to a failure on every store.) The order of
		// the stores to try is the same as the return value of GetServiceNames().
		//
		// key is used to remember the last store with which the predicate last
		// succeeded. If the last successful store is cached, it will be tried
		// first before all the stores are tried. Note that the last successful
		// store will be tried twice---first before all the stores, and another time
		// with all the stores.
		//
		// If an attempt to evaluate the predicate results in a transaction failure,
		// repeated attempts will be made until the predicate returns without a
		// transaction failure or numberOfAttempts attempts have been made.
		static c2_status_t ForAllServices(
		const std::string& key,
		size_t numberOfAttempts,
		std::function<c2_status_t(std::shared_ptr<Codec2Client> const&)>
		predicate);