Merge "libbinder_ndk: NDK comments for interface utils" am: ea96f70b76 (c4c99b46) · Commits · e / devices / smdk4412 / android_frameworks_native

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

+26 −7

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

	namespace ndk {		namespace ndk {

	// analog using std::shared_ptr for RefBase-like semantics		/**
			* analog using std::shared_ptr for internally held refcount
			*/
	class SharedRefBase {		class SharedRefBase {
	public:		public:
	SharedRefBase() {}		SharedRefBase() {}
	virtual ~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> ref() {
	std::shared_ptr<SharedRefBase> thiz = mThis.lock();		std::shared_ptr<SharedRefBase> thiz = mThis.lock();

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

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

	// wrapper analog to IInterface		/**
			* wrapper analog to IInterface
			*/
	class ICInterface : public SharedRefBase {		class ICInterface : public SharedRefBase {
	public:		public:
	ICInterface() {}		ICInterface() {}
	virtual ~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;		virtual SpAIBinder asBinder() = 0;

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

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

	protected:		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;		virtual SpAIBinder createBinder() = 0;

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

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