Add a new service for AMS structured AIDL support (dc907b80) · Commits · e / os / android_frameworks_base

core/java/Android.bp

+27 −0

Original line number	Diff line number	Diff line
		@@ -457,6 +457,13 @@ filegroup {
		],
		}

		filegroup {
		name: "activity_manager_iuidobserver_aidl",
		srcs: [
		"android/app/IUidObserver.aidl",
		],
		}

		filegroup {
		name: "activity_manager_runningappprocessinfo_aidl",
		srcs: [
		@@ -758,3 +765,23 @@ java_system_features_srcs {
		full_class_name: "com.android.internal.pm.RoSystemFeatures",
		visibility: ["//visibility:private"],
		}

		aidl_interface {
		name: "activitymanager_structured_aidl",
		unstable: true,
		srcs: [
		"android/app/IActivityManagerStructured.aidl",
		":activity_manager_iprocessobserver_aidl",
		":activity_manager_iuidobserver_aidl",
		":activity_manager_runningappprocessinfo_aidl",
		],
		backend: {
		java: {
		// java code is generated through framework-core-sources.
		enabled: false,
		},
		rust: {
		enabled: true,
		},
		},
		}

core/java/android/app/ActivityManager.java

+23 −19

Original line number	Diff line number	Diff line
		@@ -4137,25 +4137,7 @@ public class ActivityManager {

		public void writeToParcel(Parcel dest, int flags) {
		final android.app.RunningAppProcessInfo info = new android.app.RunningAppProcessInfo();
		info.processName = TextUtils.emptyIfNull(processName);
		info.pid = pid;
		info.uid = uid;
		info.pkgList = pkgList;
		info.pkgDeps = pkgDeps;
		info.flags = this.flags;
		info.lastTrimLevel = lastTrimLevel;
		info.importance = importance;
		info.lru = lru;
		info.importanceReasonCode = importanceReasonCode;
		info.importanceReasonPid = importanceReasonPid;
		info.importanceReasonComponent = importanceReasonComponent != null
		? importanceReasonComponent.flattenToString()
		: null;
		info.importanceReasonImportance = importanceReasonImportance;
		info.processState = processState;
		info.isFocused = isFocused;
		info.lastActivityTime = lastActivityTime;

		copyTo(info);
		info.writeToParcel(dest, flags);
		}

		@@ -4199,6 +4181,28 @@ public class ActivityManager {
		other.lastActivityTime = lastActivityTime;
		}

		/** @hide */
		public void copyTo(android.app.RunningAppProcessInfo info) {
		info.processName = TextUtils.emptyIfNull(processName);
		info.pid = pid;
		info.uid = uid;
		info.pkgList = pkgList;
		info.pkgDeps = pkgDeps;
		info.flags = this.flags;
		info.lastTrimLevel = lastTrimLevel;
		info.importance = importance;
		info.lru = lru;
		info.importanceReasonCode = importanceReasonCode;
		info.importanceReasonPid = importanceReasonPid;
		info.importanceReasonComponent = importanceReasonComponent != null
		? importanceReasonComponent.flattenToString()
		: null;
		info.importanceReasonImportance = importanceReasonImportance;
		info.processState = processState;
		info.isFocused = isFocused;
		info.lastActivityTime = lastActivityTime;
		}

		public static final @android.annotation.NonNull Creator<RunningAppProcessInfo> CREATOR =
		new Creator<RunningAppProcessInfo>() {
		public RunningAppProcessInfo createFromParcel(Parcel source) {

core/java/android/app/IActivityManager.aidl

+2 −0

Original line number	Diff line number	Diff line
		@@ -96,6 +96,8 @@ interface IActivityManager {

		// Since these transactions are also called from native code, these must be kept in sync with
		// the ones in frameworks/native/libs/binder/include_activitymanager/binder/ActivityManager.h
		// TODO(b/419409018): Remove this warning message after migrating all native API users to the
		// activity_structured service.
		// =============== Beginning of transactions used on native side as well ======================
		ParcelFileDescriptor openContentUri(in String uriString);
		void registerUidObserver(in IUidObserver observer, int which, int cutpoint,

core/java/android/app/IActivityManagerStructured.aidl

0 → 100644

+95 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 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.
		*/

		package android.app;

		import android.app.IProcessObserver;
		import android.app.IUidObserver;
		import android.app.RunningAppProcessInfo;

		/**
		* Structured AIDL version of IActivityManager.aidl.
		*
		* At this moment this interface provides a minimum level of support for native processes.
		* TODO(b/419409018): Migrate the entire interface to the structured AIDL.
		*
		* {@hide}
		*/
		interface IActivityManagerStructured {
		ParcelFileDescriptor openContentUri(in String uriString);
		void registerUidObserver(in IUidObserver observer, int which, int cutpoint,
		String callingPackage);
		void unregisterUidObserver(in IUidObserver observer);

		/**
		* Registers a UidObserver with a uid filter.
		*
		* @param observer The UidObserver implementation to register.
		* @param which A bitmask of events to observe. See ActivityManager.UID_OBSERVER_*.
		* @param cutpoint The cutpoint for onUidStateChanged events. When the state crosses this
		* threshold in either direction, onUidStateChanged will be called.
		* @param callingPackage The name of the calling package.
		* @param uids A list of uids to watch. If all uids are to be watched, use
		* registerUidObserver instead.
		* @throws RemoteException
		* @return Returns A binder token identifying the UidObserver registration.
		*/
		@JavaPassthrough(annotation="@android.annotation.RequiresPermission(android.Manifest.permission.PACKAGE_USAGE_STATS)")
		IBinder registerUidObserverForUids(in IUidObserver observer, int which, int cutpoint,
		String callingPackage, in int[] uids);

		/**
		* Adds a uid to the list of uids that a UidObserver will receive updates about.
		*
		* @param observerToken The binder token identifying the UidObserver registration.
		* @param callingPackage The name of the calling package.
		* @param uid The uid to watch.
		* @throws RemoteException
		*/
		void addUidToObserver(in IBinder observerToken, String callingPackage, int uid);

		/**
		* Removes a uid from the list of uids that a UidObserver will receive updates about.
		*
		* @param observerToken The binder token identifying the UidObserver registration.
		* @param callingPackage The name of the calling package.
		* @param uid The uid to stop watching.
		* @throws RemoteException
		*/
		void removeUidFromObserver(in IBinder observerToken, String callingPackage, int uid);

		boolean isUidActive(int uid, String callingPackage);
		@JavaPassthrough(annotation=
		"@android.annotation.RequiresPermission(allOf = {android.Manifest.permission.PACKAGE_USAGE_STATS, android.Manifest.permission.INTERACT_ACROSS_USERS_FULL}, conditional = true)")
		int getUidProcessState(int uid, in String callingPackage);
		int checkPermission(in String permission, int pid, int uid);

		/** Logs start of an API call to associate with an FGS, used for FGS Type Metrics */
		oneway void logFgsApiBegin(int apiType, int appUid, int appPid);

		/** Logs stop of an API call to associate with an FGS, used for FGS Type Metrics */
		oneway void logFgsApiEnd(int apiType, int appUid, int appPid);

		/** Logs API state change to associate with an FGS, used for FGS Type Metrics */
		oneway void logFgsApiStateChanged(int apiType, int state, int appUid, int appPid);

		@UnsupportedAppUsage
		void registerProcessObserver(in IProcessObserver observer);
		@UnsupportedAppUsage
		void unregisterProcessObserver(in IProcessObserver observer);
		@UnsupportedAppUsage
		List<RunningAppProcessInfo> getRunningAppProcesses();
		}

services/core/java/com/android/server/am/ActivityManagerService.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -1972,6 +1972,12 @@ public class ActivityManagerService extends IActivityManager.Stub
		ServiceManager.addService("permission", new PermissionController(this));
		ServiceManager.addService("processinfo", new ProcessInfoService(this));
		ServiceManager.addService("cacheinfo", new CacheBinder(this));
		if (Flags.enableActivityManagerStructuredService()) {
		ServiceManager.addService(
		"activity_structured",
		new ActivityManagerStructured(this),
		/* allowIsolated= */ true);
		}

		ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(
		"android", STOCK_PM_FLAGS \| MATCH_SYSTEM_ONLY);