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Commit 085fa632 authored by Achim Thesmann's avatar Achim Thesmann
Browse files

Log if ApplicationThread is used from Non-System 

Bug: 317346668
Test: atest ActivityThreadTest BackgroundActivityLaunchTest
Flag: EXEMPT logging only
Change-Id: Ia4828b622238699a1fd5ffeafa9525df63364a2b
parent 5a0f088b

core/java/android/app/ActivityThread.java

+121 −1
Original line number Diff line number Diff line
@@ -254,8 +254,8 @@ import com.android.internal.util.FastPrintWriter; 
import com.android.internal.util.Preconditions;

import com.android.internal.util.function.pooled.PooledLambda;

import com.android.org.conscrypt.TrustedCertificateStore;

import com.android.server.am.MemInfoDumpProto;

import com.android.server.am.BitmapDumpProto;

import com.android.server.am.MemInfoDumpProto;



import dalvik.annotation.optimization.NeverCompile;

import dalvik.system.AppSpecializationHooks;
@@ -298,6 +298,7 @@ import java.util.TimeZone; 
import java.util.concurrent.Executor;

import java.util.concurrent.atomic.AtomicInteger;

import java.util.function.Consumer;

import java.util.stream.Collectors;



/**

 * This manages the execution of the main thread in an
@@ -1156,10 +1157,12 @@ public final class ActivityThread extends ClientTransactionHandler 
        private static final String DB_POOL_INFO_HEADER = "  %13s %13s %13s  %s";

        private static final String DB_POOL_INFO_FORMAT = "  %13d %13d %13d  %s";



        @Override

        public final void scheduleReceiver(Intent intent, ActivityInfo info,

                CompatibilityInfo compatInfo, int resultCode, String data, Bundle extras,

                boolean ordered, boolean assumeDelivered, int sendingUser, int processState,

                int sendingUid, String sendingPackage) {

            assertCalledBySystem();

            updateProcessState(processState, false);

            ReceiverData r = new ReceiverData(intent, resultCode, data, extras,

                    ordered, false, assumeDelivered, mAppThread.asBinder(), sendingUser,
@@ -1171,7 +1174,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.RECEIVER, r);

        }



        @Override

        public final void scheduleReceiverList(List<ReceiverInfo> info) throws RemoteException {

            assertCalledBySystem();

            for (int i = 0; i < info.size(); i++) {

                ReceiverInfo r = info.get(i);

                if (r.registered) {
@@ -1188,8 +1193,10 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public final void scheduleCreateBackupAgent(ApplicationInfo app,

                int backupMode, int userId, @BackupDestination int backupDestination) {

            assertCalledBySystem();

            CreateBackupAgentData d = new CreateBackupAgentData();

            d.appInfo = app;

            d.backupMode = backupMode;
@@ -1199,7 +1206,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.CREATE_BACKUP_AGENT, d);

        }



        @Override

        public final void scheduleDestroyBackupAgent(ApplicationInfo app, int userId) {

            assertCalledBySystem();

            CreateBackupAgentData d = new CreateBackupAgentData();

            d.appInfo = app;

            d.userId = userId;
@@ -1207,8 +1216,10 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.DESTROY_BACKUP_AGENT, d);

        }



        @Override

        public final void scheduleCreateService(IBinder token,

                ServiceInfo info, CompatibilityInfo compatInfo, int processState) {

            assertCalledBySystem();

            updateProcessState(processState, false);

            CreateServiceData s = new CreateServiceData();

            s.token = token;
@@ -1224,8 +1235,10 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.CREATE_SERVICE, s);

        }



        @Override

        public final void scheduleBindService(IBinder token, IBinder bindToken, Intent intent,

                boolean rebind, int processState, long bindSeq) {

            assertCalledBySystem();

            updateProcessState(processState, false);

            BindServiceData s = new BindServiceData();

            s.token = token;
@@ -1249,7 +1262,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.BIND_SERVICE, s);

        }



        @Override

        public final void scheduleUnbindService(IBinder token, IBinder bindToken, Intent intent) {

            assertCalledBySystem();

            BindServiceData s = new BindServiceData();

            s.token = token;

            s.bindToken = bindToken;
@@ -1263,7 +1278,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.UNBIND_SERVICE, s);

        }



        @Override

        public final void scheduleServiceArgs(IBinder token, ParceledListSlice args) {

            assertCalledBySystem();

            List<ServiceStartArgs> list = args.getList();



            for (int i = 0; i < list.size(); i++) {
@@ -1286,7 +1303,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public final void scheduleStopService(IBinder token) {

            assertCalledBySystem();

            if (Trace.isTagEnabled(Trace.TRACE_TAG_ACTIVITY_MANAGER)) {

                Trace.instant(Trace.TRACE_TAG_ACTIVITY_MANAGER, "scheduleStopService. token="

                        + token);
@@ -1296,6 +1315,7 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public final void scheduleTimeoutService(IBinder token, int startId) {

            assertCalledBySystem();

            if (Trace.isTagEnabled(Trace.TRACE_TAG_ACTIVITY_MANAGER)) {

                Trace.instant(Trace.TRACE_TAG_ACTIVITY_MANAGER, "scheduleTimeoutService. token="

                        + token);
@@ -1305,12 +1325,14 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public final void schedulePing(RemoteCallback pong) {

            assertCalledBySystem();

            sendMessage(H.PING, pong);

        }



        @Override

        public final void scheduleTimeoutServiceForType(IBinder token, int startId,

                @ServiceInfo.ForegroundServiceType int fgsType) {

            assertCalledBySystem();

            if (Trace.isTagEnabled(Trace.TRACE_TAG_ACTIVITY_MANAGER)) {

                Trace.instant(Trace.TRACE_TAG_ACTIVITY_MANAGER,

                        "scheduleTimeoutServiceForType. token=" + token);
@@ -1349,6 +1371,7 @@ public final class ActivityThread extends ClientTransactionHandler 
                FileDescriptor applicationSharedMemoryFd,

                long startRequestedElapsedTime,

                long startRequestedUptime) {

            assertCalledBySystem();

            if (DEBUG_STORE_ENABLED) {

                DebugStore.recordScheduleBindApplication();

            }
@@ -1444,22 +1467,30 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public final void runIsolatedEntryPoint(String entryPoint, String[] entryPointArgs) {

            assertCalledBySystem();

            SomeArgs args = SomeArgs.obtain();

            args.arg1 = entryPoint;

            args.arg2 = entryPointArgs;

            sendMessage(H.RUN_ISOLATED_ENTRY_POINT, args);

        }



        @Override

        public final void scheduleExit() {

            assertCalledBySystem();

            sendMessage(H.EXIT_APPLICATION, null);

        }



        @Override

        public final void scheduleSuicide() {

            assertCalledBySystem();

            sendMessage(H.SUICIDE, null);

        }



        @Override

        public void scheduleApplicationInfoChanged(ApplicationInfo ai) {

            assertCalledBySystem();

            synchronized (mResourcesManager) {

                var oldAi = mPendingAppInfoUpdates.put(ai.packageName, ai);

                if (oldAi != null && oldAi.createTimestamp > ai.createTimestamp) {
@@ -1475,11 +1506,15 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.APPLICATION_INFO_CHANGED, ai.packageName);

        }



        @Override

        public void updateTimeZone() {

            assertCalledBySystem();

            TimeZone.setDefault(null);

        }



        @Override

        public void clearDnsCache() {

            assertCalledBySystem();

            // a non-standard API to get this to libcore

            InetAddress.clearDnsCache();

            // Allow libcore to perform the necessary actions as it sees fit upon a network
@@ -1487,7 +1522,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            NetworkEventDispatcher.getInstance().dispatchNetworkConfigurationChange();

        }



        @Override

        public void updateHttpProxy() {

            assertCalledBySystem();

            final Application app;

            synchronized (ActivityThread.this) {

                app = getApplication();
@@ -1502,12 +1539,16 @@ public final class ActivityThread extends ClientTransactionHandler 
            ActivityThread.updateHttpProxy(app);

        }



        @Override

        public void processInBackground() {

            assertCalledBySystem();

            mH.removeMessages(H.GC_WHEN_IDLE);

            mH.sendMessage(mH.obtainMessage(H.GC_WHEN_IDLE));

        }



        @Override

        public void dumpService(ParcelFileDescriptor pfd, IBinder servicetoken, String[] args) {

            assertCalledBySystem();

            DumpComponentInfo data = new DumpComponentInfo();

            try {

                data.fd = pfd.dup();
@@ -1524,11 +1565,13 @@ public final class ActivityThread extends ClientTransactionHandler 
        // This function exists to make sure all receiver dispatching is

        // correctly ordered, since these are one-way calls and the binder driver

        // applies transaction ordering per object for such calls.

        @Override

        public void scheduleRegisteredReceiver(IIntentReceiver receiver, Intent intent,

                int resultCode, String dataStr, Bundle extras, boolean ordered,

                boolean sticky, boolean assumeDelivered, int sendingUser, int processState,

                int sendingUid, String sendingPackage)

                throws RemoteException {

            assertCalledBySystem();

            updateProcessState(processState, false);



            // We can't modify IIntentReceiver due to UnsupportedAppUsage, so
@@ -1557,17 +1600,20 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void scheduleLowMemory() {

            assertCalledBySystem();

            sendMessage(H.LOW_MEMORY, null);

        }



        @Override

        public void profilerControl(boolean start, ProfilerInfo profilerInfo, int profileType) {

            assertCalledBySystem();

            sendMessage(H.PROFILER_CONTROL, profilerInfo, start ? 1 : 0, profileType);

        }



        @Override

        public void dumpHeap(boolean managed, boolean mallocInfo, boolean runGc, String dumpBitmaps,

                String path, ParcelFileDescriptor fd, RemoteCallback finishCallback) {

            assertCalledBySystem();

            DumpHeapData dhd = new DumpHeapData();

            dhd.managed = managed;

            dhd.mallocInfo = mallocInfo;
@@ -1588,15 +1634,21 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.DUMP_HEAP, dhd, 0, 0, true /*async*/);

        }



        @Override

        public void attachAgent(String agent) {

            assertCalledBySystem();

            sendMessage(H.ATTACH_AGENT, agent);

        }



        @Override

        public void attachStartupAgents(String dataDir) {

            assertCalledBySystem();

            sendMessage(H.ATTACH_STARTUP_AGENTS, dataDir);

        }



        @Override

        public void setSchedulingGroup(int group) {

            assertCalledBySystem();

            // Note: do this immediately, since going into the foreground

            // should happen regardless of what pending work we have to do

            // and the activity manager will wait for us to report back that
@@ -1608,12 +1660,15 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public void dispatchPackageBroadcast(int cmd, String[] packages) {

            assertCalledBySystem();

            sendMessage(H.DISPATCH_PACKAGE_BROADCAST, packages, cmd);

        }



        @Override

        public void scheduleCrash(String msg, int typeId, @Nullable Bundle extras) {

            assertCalledBySystem();

            SomeArgs args = SomeArgs.obtain();

            args.arg1 = msg;

            args.arg2 = extras;
@@ -1622,6 +1677,7 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void dumpResources(ParcelFileDescriptor fd, RemoteCallback callback) {

            assertCalledBySystem();

            DumpResourcesData data = new DumpResourcesData();

            try {

                data.fd = fd.dup();
@@ -1634,8 +1690,10 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public void dumpActivity(ParcelFileDescriptor pfd, IBinder activitytoken,

                String prefix, String[] args) {

            assertCalledBySystem();

            DumpComponentInfo data = new DumpComponentInfo();

            try {

                data.fd = pfd.dup();
@@ -1650,8 +1708,10 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public void dumpProvider(ParcelFileDescriptor pfd, IBinder providertoken,

                String[] args) {

            assertCalledBySystem();

            DumpComponentInfo data = new DumpComponentInfo();

            try {

                data.fd = pfd.dup();
@@ -1670,6 +1730,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void dumpMemInfo(ParcelFileDescriptor pfd, Debug.MemoryInfo mem, boolean checkin,

                boolean dumpFullInfo, boolean dumpDalvik, boolean dumpSummaryOnly,

                boolean dumpUnreachable, boolean dumpAllocatorStats, String[] args) {

            assertCalledBySystem();

            FileOutputStream fout = new FileOutputStream(pfd.getFileDescriptor());

            PrintWriter pw = new FastPrintWriter(fout);

            try {
@@ -1877,6 +1938,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void dumpMemInfoProto(ParcelFileDescriptor pfd, Debug.MemoryInfo mem,

                boolean dumpFullInfo, boolean dumpDalvik, boolean dumpSummaryOnly,

                boolean dumpUnreachable, String[] args) {

            assertCalledBySystem();

            ProtoOutputStream proto = new ProtoOutputStream(pfd.getFileDescriptor());

            try {

                dumpMemInfo(proto, mem, dumpFullInfo, dumpDalvik, dumpSummaryOnly, dumpUnreachable);
@@ -2004,6 +2066,7 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void dumpGfxInfo(ParcelFileDescriptor pfd, String[] args) {

            assertCalledBySystem();

            DumpComponentInfo data = new DumpComponentInfo();

            try {

                data.fd = pfd.dup();
@@ -2020,6 +2083,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        @Override

        @NeverCompile

        public void dumpBitmapsProto(ParcelFileDescriptor pfd, String dumpFormat) {

            assertCalledBySystem();

            try {

                int pid = Process.myPid();

                String processName = (mBoundApplication != null)
@@ -2034,6 +2098,7 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void dumpCacheInfo(ParcelFileDescriptor pfd, String[] args) {

            assertCalledBySystem();

            try {

                PropertyInvalidatedCache.dumpCacheInfo(pfd, args);

                BroadcastStickyCache.dumpCacheInfo(pfd);
@@ -2057,6 +2122,7 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void dumpDbInfo(final ParcelFileDescriptor pfd, final String[] args) {

            assertCalledBySystem();

            if (mSystemThread) {

                // Ensure this invocation is asynchronous to prevent writer waiting if buffer cannot

                // be consumed. But it must duplicate the file descriptor first, since caller might
@@ -2089,12 +2155,14 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void unstableProviderDied(IBinder provider) {

            assertCalledBySystem();

            sendMessage(H.UNSTABLE_PROVIDER_DIED, provider);

        }



        @Override

        public void requestAssistContextExtras(IBinder activityToken, IBinder requestToken,

                int requestType, int sessionId, int flags) {

            assertCalledBySystem();

            RequestAssistContextExtras cmd = new RequestAssistContextExtras();

            cmd.activityToken = activityToken;

            cmd.requestToken = requestToken;
@@ -2104,11 +2172,15 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.REQUEST_ASSIST_CONTEXT_EXTRAS, cmd);

        }



        @Override

        public void setCoreSettings(Bundle coreSettings) {

            assertCalledBySystem();

            sendMessage(H.SET_CORE_SETTINGS, coreSettings);

        }



        @Override

        public void updatePackageCompatibilityInfo(String pkg, CompatibilityInfo info) {

            assertCalledBySystem();

            UpdateCompatibilityData ucd = new UpdateCompatibilityData();

            ucd.pkg = pkg;

            ucd.info = info;
@@ -2117,7 +2189,9 @@ public final class ActivityThread extends ClientTransactionHandler 
            sendMessage(H.UPDATE_PACKAGE_COMPATIBILITY_INFO, ucd);

        }



        @Override

        public void scheduleTrimMemory(int level) {

            assertCalledBySystem();

            final Runnable r = PooledLambda.obtainRunnable(ActivityThread::handleTrimMemory,

                    ActivityThread.this, level).recycleOnUse();

            // Schedule trimming memory after drawing the frame to minimize jank-risk.
@@ -2129,16 +2203,22 @@ public final class ActivityThread extends ClientTransactionHandler 
            }

        }



        @Override

        public void scheduleTranslucentConversionComplete(IBinder token, boolean drawComplete) {

            assertCalledBySystem();

            sendMessage(H.TRANSLUCENT_CONVERSION_COMPLETE, token, drawComplete ? 1 : 0);

        }



        @Override

        public void scheduleOnNewSceneTransitionInfo(IBinder token, SceneTransitionInfo info) {

            assertCalledBySystem();

            sendMessage(H.ON_NEW_SCENE_TRANSITION_INFO,

                    new Pair<IBinder, SceneTransitionInfo>(token, info));

        }



        @Override

        public void setProcessState(int state) {

            assertCalledBySystem();

            updateProcessState(state, true);

        }
@@ -2149,6 +2229,7 @@ public final class ActivityThread extends ClientTransactionHandler 
         */

        @Override

        public void setNetworkBlockSeq(long procStateSeq) {

            assertCalledBySystem();

            synchronized (mNetworkPolicyLock) {

                mNetworkBlockSeq = procStateSeq;

            }
@@ -2156,11 +2237,13 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void scheduleInstallProvider(ProviderInfo provider) {

            assertCalledBySystem();

            sendMessage(H.INSTALL_PROVIDER, provider);

        }



        @Override

        public final void updateTimePrefs(int timeFormatPreference) {

            assertCalledBySystem();

            final Boolean timeFormatPreferenceBool;

            // For convenience we are using the Intent extra values.

            if (timeFormatPreference == Intent.EXTRA_TIME_PREF_VALUE_USE_12_HOUR) {
@@ -2177,11 +2260,13 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void scheduleEnterAnimationComplete(IBinder token) {

            assertCalledBySystem();

            sendMessage(H.ENTER_ANIMATION_COMPLETE, token);

        }



        @Override

        public void notifyCleartextNetwork(byte[] firstPacket) {

            assertCalledBySystem();

            if (StrictMode.vmCleartextNetworkEnabled()) {

                StrictMode.onCleartextNetworkDetected(firstPacket);

            }
@@ -2189,11 +2274,13 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void startBinderTracking() {

            assertCalledBySystem();

            sendMessage(H.START_BINDER_TRACKING, null);

        }



        @Override

        public void stopBinderTrackingAndDump(ParcelFileDescriptor pfd) {

            assertCalledBySystem();

            try {

                sendMessage(H.STOP_BINDER_TRACKING_AND_DUMP, pfd.dup());

            } catch (IOException e) {
@@ -2205,6 +2292,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        @Override

        public void scheduleLocalVoiceInteractionStarted(IBinder token,

                IVoiceInteractor voiceInteractor) throws RemoteException {

            assertCalledBySystem();

            SomeArgs args = SomeArgs.obtain();

            args.arg1 = token;

            args.arg2 = voiceInteractor;
@@ -2213,17 +2301,20 @@ public final class ActivityThread extends ClientTransactionHandler 


        @Override

        public void handleTrustStorageUpdate() {

            assertCalledBySystem();

            NetworkSecurityPolicy.getInstance().handleTrustStorageUpdate();

        }



        @Override

        public void scheduleTransaction(ClientTransaction transaction) throws RemoteException {

            assertCalledBySystem();

            ActivityThread.this.scheduleTransaction(transaction);

        }



        @Override

        public void scheduleTaskFragmentTransaction(@NonNull ITaskFragmentOrganizer organizer,

                @NonNull TaskFragmentTransaction transaction) throws RemoteException {

            assertCalledBySystem();

            // TODO(b/352665082): ITaskFragmentOrganizer can be cleanup to be a IBinder token

            organizer.onTransactionReady(transaction);

        }
@@ -2232,6 +2323,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void requestDirectActions(@NonNull IBinder activityToken,

                @NonNull IVoiceInteractor interactor, @Nullable RemoteCallback cancellationCallback,

                @NonNull RemoteCallback callback) {

            assertCalledBySystem();

            final CancellationSignal cancellationSignal = new CancellationSignal();

            if (cancellationCallback != null) {

                final ICancellationSignal transport = createSafeCancellationTransport(
@@ -2250,6 +2342,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void performDirectAction(@NonNull IBinder activityToken, @NonNull String actionId,

                @Nullable Bundle arguments, @Nullable RemoteCallback cancellationCallback,

                @NonNull RemoteCallback resultCallback) {

            assertCalledBySystem();

            final CancellationSignal cancellationSignal = new CancellationSignal();

            if (cancellationCallback != null) {

                final ICancellationSignal transport = createSafeCancellationTransport(
@@ -2267,6 +2360,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        @Override

        public void notifyContentProviderPublishStatus(@NonNull ContentProviderHolder holder,

                @NonNull String authorities, int userId, boolean published) {

            assertCalledBySystem();

            final String auths[] = authorities.split(";");

            for (String auth: auths) {

                final ProviderKey key = getGetProviderKey(auth, userId);
@@ -2281,6 +2375,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void instrumentWithoutRestart(ComponentName instrumentationName,

                Bundle instrumentationArgs, IInstrumentationWatcher instrumentationWatcher,

                IUiAutomationConnection instrumentationUiConnection, ApplicationInfo targetInfo) {

            assertCalledBySystem();

            AppBindData data = new AppBindData();

            data.instrumentationName = instrumentationName;

            data.instrumentationArgs = instrumentationArgs;
@@ -2294,6 +2389,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void updateUiTranslationState(IBinder activityToken, int state,

                TranslationSpec sourceSpec, TranslationSpec targetSpec, List<AutofillId> viewIds,

                UiTranslationSpec uiTranslationSpec) {

            assertCalledBySystem();

            SomeArgs args = SomeArgs.obtain();

            args.arg1 = activityToken;

            args.arg2 = state;
@@ -2308,6 +2404,7 @@ public final class ActivityThread extends ClientTransactionHandler 
        public void getExecutableMethodFileOffsets(

                @NonNull MethodDescriptor methodDescriptor,

                @NonNull IOffsetCallback resultCallback) {

            assertCalledBySystem();

            Executable executable = MethodDescriptorParser.parseMethodDescriptor(

                    getClass().getClassLoader(), methodDescriptor);

            VMDebug.ExecutableMethodFileOffsets location;
@@ -2332,6 +2429,29 @@ public final class ActivityThread extends ClientTransactionHandler 
                throw e.rethrowFromSystemServer();

            }

        }



        private void assertCalledBySystem() {

            int callingUid = Binder.getCallingUid();

            if (callingUid != Process.SYSTEM_UID) {

                String packageName;

                if (callingUid == Process.ROOT_UID) {

                    packageName = "root";

                } else {

                    String[] packagesForUid =

                            getSystemContext().getPackageManager().getPackagesForUid(callingUid);

                    if (packagesForUid == null || packagesForUid.length == 0) {

                        packageName = "unknown";

                    } else if (packagesForUid.length == 1) {

                        packageName = packagesForUid[0];

                    } else {

                        packageName = Arrays.asList(packagesForUid).stream().sorted().collect(

                                Collectors.joining(", "));

                    }

                }

                Slog.wtf(TAG, "ApplicationThread called by non-system process"

                        + " (" + callingUid + "): " + packageName);

            }

        }

    }



    private @NonNull SafeCancellationTransport createSafeCancellationTransport(