Merge "Add an extra level of indirection to make sure that native IHwBinder" (e7191f50) · Commits · e / os / android_frameworks_base

core/jni/android_os_HwBinder.cpp

+40 −18

Original line number	Diff line number	Diff line
		@@ -58,6 +58,29 @@ static struct fields_t {
		jmethodID onTransactID;
		} gFields;

		struct JHwBinderHolder : public RefBase {
		JHwBinderHolder() {}

		sp<JHwBinder> get(JNIEnv *env, jobject obj) {
		Mutex::Autolock autoLock(mLock);

		sp<JHwBinder> binder = mBinder.promote();

		if (binder == NULL) {
		binder = new JHwBinder(env, obj);
		mBinder = binder;
		}

		return binder;
		}

		private:
		Mutex mLock;
		wp<JHwBinder> mBinder;

		DISALLOW_COPY_AND_ASSIGN(JHwBinderHolder);
		};

		// static
		void JHwBinder::InitClass(JNIEnv *env) {
		ScopedLocalRef<jclass> clazz(
		@@ -75,10 +98,10 @@ void JHwBinder::InitClass(JNIEnv *env) {
		}

		// static
		sp<JHwBinder> JHwBinder::SetNativeContext(
		JNIEnv *env, jobject thiz, const sp<JHwBinder> &context) {
		sp<JHwBinder> old =
		(JHwBinder *)env->GetLongField(thiz, gFields.contextID);
		sp<JHwBinderHolder> JHwBinder::SetNativeContext(
		JNIEnv *env, jobject thiz, const sp<JHwBinderHolder> &context) {
		sp<JHwBinderHolder> old =
		(JHwBinderHolder *)env->GetLongField(thiz, gFields.contextID);

		if (context != NULL) {
		context->incStrong(NULL /* id */);
		@@ -94,27 +117,27 @@ sp<JHwBinder> JHwBinder::SetNativeContext(
		}

		// static
		sp<JHwBinder> JHwBinder::GetNativeContext(
		sp<JHwBinder> JHwBinder::GetNativeBinder(
		JNIEnv *env, jobject thiz) {
		return (JHwBinder *)env->GetLongField(thiz, gFields.contextID);
		JHwBinderHolder *holder =
		reinterpret_cast<JHwBinderHolder *>(
		env->GetLongField(thiz, gFields.contextID));

		return holder->get(env, thiz);
		}

		JHwBinder::JHwBinder(JNIEnv *env, jobject thiz) {
		jclass clazz = env->GetObjectClass(thiz);
		CHECK(clazz != NULL);

		mClass = (jclass)env->NewGlobalRef(clazz);
		mObject = env->NewWeakGlobalRef(thiz);
		mObject = env->NewGlobalRef(thiz);
		}

		JHwBinder::~JHwBinder() {
		JNIEnv *env = AndroidRuntime::getJNIEnv();

		env->DeleteWeakGlobalRef(mObject);
		env->DeleteGlobalRef(mObject);
		mObject = NULL;

		env->DeleteGlobalRef(mClass);
		mClass = NULL;
		}

		status_t JHwBinder::onTransact(
		@@ -201,10 +224,10 @@ status_t JHwBinder::onTransact(
		using namespace android;

		static void releaseNativeContext(void *nativeContext) {
		sp<JHwBinder> binder = (JHwBinder *)nativeContext;
		sp<JHwBinderHolder> context = static_cast<JHwBinderHolder *>(nativeContext);

		if (binder != NULL) {
		binder->decStrong(NULL /* id */);
		if (context != NULL) {
		context->decStrong(NULL /* id */);
		}
		}

		@@ -215,8 +238,7 @@ static jlong JHwBinder_native_init(JNIEnv *env) {
		}

		static void JHwBinder_native_setup(JNIEnv *env, jobject thiz) {
		sp<JHwBinder> context = new JHwBinder(env, thiz);

		sp<JHwBinderHolder> context = new JHwBinderHolder;
		JHwBinder::SetNativeContext(env, thiz, context);
		}

		@@ -244,7 +266,7 @@ static void JHwBinder_native_registerService(
		return; // XXX exception already pending?
		}

		sp<hardware::IBinder> binder = JHwBinder::GetNativeContext(env, thiz);
		sp<hardware::IBinder> binder = JHwBinder::GetNativeBinder(env, thiz);

		/* TODO(b/33440494) this is not right */
		sp<hidl::base::V1_0::IBase> base = new hidl::base::V1_0::BpHwBase(binder);

core/jni/android_os_HwBinder.h

+5 −4

Original line number	Diff line number	Diff line
		@@ -24,13 +24,15 @@

		namespace android {

		struct JHwBinderHolder;

		struct JHwBinder : public hardware::BHwBinder {
		static void InitClass(JNIEnv *env);

		static sp<JHwBinder> SetNativeContext(
		JNIEnv *env, jobject thiz, const sp<JHwBinder> &context);
		static sp<JHwBinderHolder> SetNativeContext(
		JNIEnv *env, jobject thiz, const sp<JHwBinderHolder> &context);

		static sp<JHwBinder> GetNativeContext(JNIEnv *env, jobject thiz);
		static sp<JHwBinder> GetNativeBinder(JNIEnv *env, jobject thiz);

		JHwBinder(JNIEnv *env, jobject thiz);

		@@ -45,7 +47,6 @@ protected:
		TransactCallback callback);

		private:
		jclass mClass;
		jobject mObject;

		DISALLOW_COPY_AND_ASSIGN(JHwBinder);

core/jni/android_os_HwParcel.cpp

+1 −5

Original line number	Diff line number	Diff line
		@@ -169,7 +169,6 @@ JHwParcel::JHwParcel(JNIEnv *env, jobject thiz)
		jclass clazz = env->GetObjectClass(thiz);
		CHECK(clazz != NULL);

		mClass = (jclass)env->NewGlobalRef(clazz);
		mObject = env->NewWeakGlobalRef(thiz);
		}

		@@ -182,9 +181,6 @@ JHwParcel::~JHwParcel() {

		env->DeleteWeakGlobalRef(mObject);
		mObject = NULL;

		env->DeleteGlobalRef(mClass);
		mClass = NULL;
		}

		hardware::Parcel *JHwParcel::getParcel() {
		@@ -542,7 +538,7 @@ static void JHwParcel_native_writeStrongBinder(
		env, FindClassOrDie(env, PACKAGE_PATH "/HwRemoteBinder"));

		if (env->IsInstanceOf(binderObj, hwBinderKlass.get())) {
		binder = JHwBinder::GetNativeContext(env, binderObj);
		binder = JHwBinder::GetNativeBinder(env, binderObj);
		} else if (env->IsInstanceOf(binderObj, hwRemoteBinderKlass.get())) {
		binder = JHwRemoteBinder::GetNativeContext(
		env, binderObj)->getBinder();

core/jni/android_os_HwParcel.h

+0 −1

Original line number	Diff line number	Diff line
		@@ -53,7 +53,6 @@ protected:
		virtual ~JHwParcel();

		private:
		jclass mClass;
		jobject mObject;

		hardware::Parcel *mParcel;

core/jni/android_os_HwRemoteBinder.cpp

+0 −4

Original line number	Diff line number	Diff line
		@@ -272,7 +272,6 @@ JHwRemoteBinder::JHwRemoteBinder(
		jclass clazz = env->GetObjectClass(thiz);
		CHECK(clazz != NULL);

		mClass = (jclass)env->NewGlobalRef(clazz);
		mObject = env->NewWeakGlobalRef(thiz);
		}

		@@ -281,9 +280,6 @@ JHwRemoteBinder::~JHwRemoteBinder() {

		env->DeleteWeakGlobalRef(mObject);
		mObject = NULL;

		env->DeleteGlobalRef(mClass);
		mClass = NULL;
		}

		sp<hardware::IBinder> JHwRemoteBinder::getBinder() const {