Merge "libbinder_ndk: NDK comments for interface utils" am: ea96f70b76 am: f197340445 (ffaf0cfe) · Commits · e / os / platform_frameworks_native

libs/binder/ndk/include_ndk/android/binder_interface_utils.h

+26 −7

Original line number	Diff line number	Diff line
		@@ -37,12 +37,18 @@

		namespace ndk {

		// analog using std::shared_ptr for RefBase-like semantics
		/**
		* analog using std::shared_ptr for internally held refcount
		*/
		class SharedRefBase {
		public:
		SharedRefBase() {}
		virtual ~SharedRefBase() {}

		/**
		* A shared_ptr must be held to this object when this is called. This must be called once during
		* the lifetime of this object.
		*/
		std::shared_ptr<SharedRefBase> ref() {
		std::shared_ptr<SharedRefBase> thiz = mThis.lock();

		@@ -51,6 +57,9 @@ public:
		return thiz;
		}

		/**
		* Convenience method for a ref (see above) which automatically casts to the desired child type.
		*/
		template <typename CHILD>
		std::shared_ptr<CHILD> ref() {
		return std::static_pointer_cast<CHILD>(ref());
		@@ -70,13 +79,17 @@ private:
		std::weak_ptr<SharedRefBase> mThis;
		};

		// wrapper analog to IInterface
		/**
		* wrapper analog to IInterface
		*/
		class ICInterface : public SharedRefBase {
		public:
		ICInterface() {}
		virtual ~ICInterface() {}

		// This either returns the single existing implementation or creates a new implementation.
		/**
		* This either returns the single existing implementation or creates a new implementation.
		*/
		virtual SpAIBinder asBinder() = 0;

		/**
		@@ -86,7 +99,9 @@ public:
		virtual bool isRemote() = 0;
		};

		// wrapper analog to BnInterface
		/**
		* implementation of IInterface for server (n = native)
		*/
		template <typename INTERFACE>
		class BnCInterface : public INTERFACE {
		public:
		@@ -98,8 +113,10 @@ public:
		bool isRemote() override { return true; }

		protected:
		// This function should only be called by asBinder. Otherwise, there is a possibility of
		// multiple AIBinder* objects being created for the same instance of an object.
		/**
		* This function should only be called by asBinder. Otherwise, there is a possibility of
		* multiple AIBinder* objects being created for the same instance of an object.
		*/
		virtual SpAIBinder createBinder() = 0;

		private:
		@@ -107,7 +124,9 @@ private:
		ScopedAIBinder_Weak mWeakBinder;
		};

		// wrapper analog to BpInterfae
		/**
		* implementation of IInterface for client (p = proxy)
		*/
		template <typename INTERFACE>
		class BpCInterface : public INTERFACE {
		public: