Merge "Fix memory leaks in audioserver" into sc-dev (eb0fe385) · Commits · e / os / android_frameworks_av

services/audiopolicy/engine/config/src/EngineConfig.cpp

+31 −22

Original line number	Diff line number	Diff line
		@@ -139,11 +139,24 @@ struct VolumeGroupTraits : public BaseSerializerTraits<VolumeGroup, VolumeGroups
		Collection &collection);
		};

		using xmlCharUnique = std::unique_ptr<xmlChar, decltype(xmlFree)>;
		template <class T>
		constexpr void (xmlDeleter)(T t);
		template <>
		constexpr auto xmlDeleter<xmlDoc> = xmlFreeDoc;
		template <>
		constexpr auto xmlDeleter<xmlChar> = [](xmlChar *s) { xmlFree(s); };

		/** @return a unique_ptr with the correct deleter for the libxml2 object. */
		template <class T>
		constexpr auto make_xmlUnique(T *t) {
		// Wrap deleter in lambda to enable empty base optimization
		auto deleter = [](T *t) { xmlDeleter<T>(t); };
		return std::unique_ptr<T, decltype(deleter)>{t, deleter};
		}

		std::string getXmlAttribute(const xmlNode cur, const char attribute)
		{
		xmlCharUnique charPtr(xmlGetProp(cur, reinterpret_cast<const xmlChar *>(attribute)), xmlFree);
		auto charPtr = make_xmlUnique(xmlGetProp(cur, reinterpret_cast<const xmlChar *>(attribute)));
		if (charPtr == NULL) {
		return "";
		}
		@@ -441,7 +454,7 @@ status_t VolumeTraits::deserialize(_xmlDoc doc, const _xmlNode root, Collectio
		for (const xmlNode *child = referenceName.empty() ?
		root->xmlChildrenNode : ref->xmlChildrenNode; child != NULL; child = child->next) {
		if (!xmlStrcmp(child->name, (const xmlChar *)volumePointTag)) {
		xmlCharUnique pointXml(xmlNodeListGetString(doc, child->xmlChildrenNode, 1), xmlFree);
		auto pointXml = make_xmlUnique(xmlNodeListGetString(doc, child->xmlChildrenNode, 1));
		if (pointXml == NULL) {
		return BAD_VALUE;
		}
		@@ -471,14 +484,14 @@ status_t VolumeGroupTraits::deserialize(_xmlDoc doc, const _xmlNode root, Coll

		for (const xmlNode *child = root->xmlChildrenNode; child != NULL; child = child->next) {
		if (not xmlStrcmp(child->name, (const xmlChar *)Attributes::name)) {
		xmlCharUnique nameXml(xmlNodeListGetString(doc, child->xmlChildrenNode, 1), xmlFree);
		auto nameXml = make_xmlUnique(xmlNodeListGetString(doc, child->xmlChildrenNode, 1));
		if (nameXml == nullptr) {
		return BAD_VALUE;
		}
		name = reinterpret_cast<const char*>(nameXml.get());
		}
		if (not xmlStrcmp(child->name, (const xmlChar *)Attributes::indexMin)) {
		xmlCharUnique indexMinXml(xmlNodeListGetString(doc, child->xmlChildrenNode, 1), xmlFree);
		auto indexMinXml = make_xmlUnique(xmlNodeListGetString(doc, child->xmlChildrenNode, 1));
		if (indexMinXml == nullptr) {
		return BAD_VALUE;
		}
		@@ -488,7 +501,7 @@ status_t VolumeGroupTraits::deserialize(_xmlDoc doc, const _xmlNode root, Coll
		}
		}
		if (not xmlStrcmp(child->name, (const xmlChar *)Attributes::indexMax)) {
		xmlCharUnique indexMaxXml(xmlNodeListGetString(doc, child->xmlChildrenNode, 1), xmlFree);
		auto indexMaxXml = make_xmlUnique(xmlNodeListGetString(doc, child->xmlChildrenNode, 1));
		if (indexMaxXml == nullptr) {
		return BAD_VALUE;
		}
		@@ -548,7 +561,7 @@ status_t deserializeLegacyVolume(_xmlDoc doc, const _xmlNode cur,
		for (const xmlNode *child = referenceName.empty() ?
		cur->xmlChildrenNode : ref->xmlChildrenNode; child != NULL; child = child->next) {
		if (!xmlStrcmp(child->name, (const xmlChar *)VolumeTraits::volumePointTag)) {
		xmlCharUnique pointXml(xmlNodeListGetString(doc, child->xmlChildrenNode, 1), xmlFree);
		auto pointXml = make_xmlUnique(xmlNodeListGetString(doc, child->xmlChildrenNode, 1));
		if (pointXml == NULL) {
		return BAD_VALUE;
		}
		@@ -640,8 +653,7 @@ private:

		ParsingResult parse(const char* path) {
		XmlErrorHandler errorHandler;
		xmlDocPtr doc;
		doc = xmlParseFile(path);
		auto doc = make_xmlUnique(xmlParseFile(path));
		if (doc == NULL) {
		// It is OK not to find an engine config file at the default location
		// as the caller will default to hardcoded default config
		@@ -650,13 +662,12 @@ ParsingResult parse(const char* path) {
		}
		return {nullptr, 0};
		}
		xmlNodePtr cur = xmlDocGetRootElement(doc);
		xmlNodePtr cur = xmlDocGetRootElement(doc.get());
		if (cur == NULL) {
		ALOGE("%s: Could not parse: empty document %s", __FUNCTION__, path);
		xmlFreeDoc(doc);
		return {nullptr, 0};
		}
		if (xmlXIncludeProcess(doc) < 0) {
		if (xmlXIncludeProcess(doc.get()) < 0) {
		ALOGE("%s: libxml failed to resolve XIncludes on document %s", __FUNCTION__, path);
		return {nullptr, 0};
		}
		@@ -669,37 +680,35 @@ ParsingResult parse(const char* path) {
		auto config = std::make_unique<Config>();
		config->version = std::stof(version);
		deserializeCollection<ProductStrategyTraits>(
		doc, cur, config->productStrategies, nbSkippedElements);
		doc.get(), cur, config->productStrategies, nbSkippedElements);
		deserializeCollection<CriterionTraits>(
		doc, cur, config->criteria, nbSkippedElements);
		doc.get(), cur, config->criteria, nbSkippedElements);
		deserializeCollection<CriterionTypeTraits>(
		doc, cur, config->criterionTypes, nbSkippedElements);
		doc.get(), cur, config->criterionTypes, nbSkippedElements);
		deserializeCollection<VolumeGroupTraits>(
		doc, cur, config->volumeGroups, nbSkippedElements);
		doc.get(), cur, config->volumeGroups, nbSkippedElements);

		return {std::move(config), nbSkippedElements};
		}

		android::status_t parseLegacyVolumeFile(const char* path, VolumeGroups &volumeGroups) {
		XmlErrorHandler errorHandler;
		xmlDocPtr doc;
		doc = xmlParseFile(path);
		auto doc = make_xmlUnique(xmlParseFile(path));
		if (doc == NULL) {
		ALOGE("%s: Could not parse document %s", __FUNCTION__, path);
		return BAD_VALUE;
		}
		xmlNodePtr cur = xmlDocGetRootElement(doc);
		xmlNodePtr cur = xmlDocGetRootElement(doc.get());
		if (cur == NULL) {
		ALOGE("%s: Could not parse: empty document %s", __FUNCTION__, path);
		xmlFreeDoc(doc);
		return BAD_VALUE;
		}
		if (xmlXIncludeProcess(doc) < 0) {
		if (xmlXIncludeProcess(doc.get()) < 0) {
		ALOGE("%s: libxml failed to resolve XIncludes on document %s", __FUNCTION__, path);
		return BAD_VALUE;
		}
		size_t nbSkippedElements = 0;
		return deserializeLegacyVolumeCollection(doc, cur, volumeGroups, nbSkippedElements);
		return deserializeLegacyVolumeCollection(doc.get(), cur, volumeGroups, nbSkippedElements);
		}

		android::status_t parseLegacyVolumes(VolumeGroups &volumeGroups) {