Merge "Use waitForDeclaredService to get Lights HAL" into rvc-dev (137f8753) · Commits · e / os / android_frameworks_base

core/java/android/os/ServiceManager.java

+39 −0

Original line number	Original line	Diff line number	Diff line
	@@ -16,6 +16,7 @@

	package android.os;		package android.os;

			import android.annotation.NonNull;
	import android.compat.annotation.UnsupportedAppUsage;		import android.compat.annotation.UnsupportedAppUsage;
	import android.util.ArrayMap;		import android.util.ArrayMap;
	import android.util.Log;		import android.util.Log;
	@@ -218,6 +219,44 @@ public final class ServiceManager {
	}		}
	}		}

			/**
			* Returns whether the specified service is declared.
			*
			* @return true if the service is declared somewhere (eg. VINTF manifest) and
			* waitForService should always be able to return the service.
			*/
			public static boolean isDeclared(@NonNull String name) {
			try {
			return getIServiceManager().isDeclared(name);
			} catch (RemoteException e) {
			Log.e(TAG, "error in isDeclared", e);
			return false;
			}
			}

			/**
			* Returns the specified service from the service manager.
			*
			* If the service is not running, servicemanager will attempt to start it, and this function
			* will wait for it to be ready.
			*
			* @return {@code null} only if there are permission problems or fatal errors.
			*/
			public static native IBinder waitForService(@NonNull String name);

			/**
			* Returns the specified service from the service manager, if declared.
			*
			* If the service is not running, servicemanager will attempt to start it, and this function
			* will wait for it to be ready.
			*
			* @return {@code null} if the service is not declared in the manifest, or if there are
			* permission problems, or if there are fatal errors.
			*/
			public static IBinder waitForDeclaredService(@NonNull String name) {
			return isDeclared(name) ? waitForService(name) : null;
			}

	/**		/**
	* Return a list of all currently running services.		* Return a list of all currently running services.
	* @return an array of all currently running services, or <code>null</code> in		* @return an array of all currently running services, or <code>null</code> in

core/java/android/os/ServiceManagerNative.java

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -87,7 +87,7 @@ class ServiceManagerProxy implements IServiceManager {
	}		}

	public boolean isDeclared(String name) throws RemoteException {		public boolean isDeclared(String name) throws RemoteException {
	throw new RemoteException();		return mServiceManager.isDeclared(name);
	}		}

	public void registerClientCallback(String name, IBinder service, IClientCallback cb)		public void registerClientCallback(String name, IBinder service, IClientCallback cb)

core/jni/Android.bp

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -123,6 +123,7 @@ cc_library_shared {
	"android_os_MessageQueue.cpp",		"android_os_MessageQueue.cpp",
	"android_os_Parcel.cpp",		"android_os_Parcel.cpp",
	"android_os_SELinux.cpp",		"android_os_SELinux.cpp",
			"android_os_ServiceManager.cpp",
	"android_os_SharedMemory.cpp",		"android_os_SharedMemory.cpp",
	"android_os_storage_StorageManager.cpp",		"android_os_storage_StorageManager.cpp",
	"android_os_UEventObserver.cpp",		"android_os_UEventObserver.cpp",

core/jni/AndroidRuntime.cpp

+2 −0

core/jni/android_os_ServiceManager.cpp

0 → 100644

+71 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* Copyright (C) 2020 The Android Open Source Project
			*
			* Licensed under the Apache License, Version 2.0 (the "License");
			* you may not use this file except in compliance with the License.
			* You may obtain a copy of the License at
			*
			* http://www.apache.org/licenses/LICENSE-2.0
			*
			* Unless required by applicable law or agreed to in writing, software
			* distributed under the License is distributed on an "AS IS" BASIS,
			* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
			* See the License for the specific language governing permissions and
			* limitations under the License.
			*/

			#define LOG_TAG "ServiceManager"
			//#define LOG_NDEBUG 0
			#include <android-base/logging.h>

			#include <binder/IInterface.h>
			#include <binder/IServiceManager.h>
			#include <nativehelper/JNIHelp.h>

			#include "android_util_Binder.h"
			#include "core_jni_helpers.h"

			namespace android {

			// Native because we have a client-side wait in waitForService() and we do not
			// want an unnecessary second copy of it.
			static jobject android_os_ServiceManager_waitForService(
			JNIEnv *env,
			jclass /* clazzObj */,
			jstring serviceNameObj) {

			const jchar* serviceName = env->GetStringCritical(serviceNameObj, nullptr);
			if (!serviceName) {
			jniThrowNullPointerException(env, nullptr);
			return nullptr;
			}
			String16 nameCopy = String16(reinterpret_cast<const char16_t *>(serviceName),
			env->GetStringLength(serviceNameObj));
			env->ReleaseStringCritical(serviceNameObj, serviceName);

			sp<IBinder> service = defaultServiceManager()->waitForService(nameCopy);

			if (!service) {
			return nullptr;
			}

			return javaObjectForIBinder(env, service);
			}

			// ----------------------------------------------------------------------------

			static const JNINativeMethod method_table[] = {
			/* name, signature, funcPtr */
			{
			"waitForService",
			"(Ljava/lang/String;)Landroid/os/IBinder;",
			(void*)android_os_ServiceManager_waitForService
			},
			};

			int register_android_os_ServiceManager(JNIEnv* env) {
			return RegisterMethodsOrDie(
			env, "android/os/ServiceManager", method_table, NELEM(method_table));
			}

			}; // namespace android

Original line number	Original line	Diff line number	Diff line
	@@ -136,6 +136,7 @@ extern int register_android_os_HwBlob(JNIEnv *env);
	extern int register_android_os_HwParcel(JNIEnv *env);		extern int register_android_os_HwParcel(JNIEnv *env);
	extern int register_android_os_HwRemoteBinder(JNIEnv *env);		extern int register_android_os_HwRemoteBinder(JNIEnv *env);
	extern int register_android_os_NativeHandle(JNIEnv *env);		extern int register_android_os_NativeHandle(JNIEnv *env);
			extern int register_android_os_ServiceManager(JNIEnv *env);
	extern int register_android_os_MessageQueue(JNIEnv* env);		extern int register_android_os_MessageQueue(JNIEnv* env);
	extern int register_android_os_Parcel(JNIEnv* env);		extern int register_android_os_Parcel(JNIEnv* env);
	extern int register_android_os_SELinux(JNIEnv* env);		extern int register_android_os_SELinux(JNIEnv* env);
	@@ -1461,6 +1462,7 @@ static const RegJNIRec gRegJNI[] = {
	REG_JNI(register_android_os_HwParcel),		REG_JNI(register_android_os_HwParcel),
	REG_JNI(register_android_os_HwRemoteBinder),		REG_JNI(register_android_os_HwRemoteBinder),
	REG_JNI(register_android_os_NativeHandle),		REG_JNI(register_android_os_NativeHandle),
			REG_JNI(register_android_os_ServiceManager),
	REG_JNI(register_android_os_storage_StorageManager),		REG_JNI(register_android_os_storage_StorageManager),
	REG_JNI(register_android_os_VintfObject),		REG_JNI(register_android_os_VintfObject),
	REG_JNI(register_android_os_VintfRuntimeInfo),		REG_JNI(register_android_os_VintfRuntimeInfo),