Merge "Prevent deadlocks during VirtualDisplay creation" into tm-dev

core/java/android/companion/virtual/IVirtualDeviceManager.aidl

@@ -19,6 +19,8 @@ package android.companion.virtual;
 import android.companion.virtual.IVirtualDevice;
 import android.companion.virtual.IVirtualDeviceActivityListener;
 import android.companion.virtual.VirtualDeviceParams;
+import android.hardware.display.IVirtualDisplayCallback;
+import android.hardware.display.VirtualDisplayConfig;
 
 /**
  * Interface for communication between VirtualDeviceManager and VirtualDeviceManagerService.
@@ -42,4 +44,16 @@ interface IVirtualDeviceManager {
     IVirtualDevice createVirtualDevice(
             in IBinder token, String packageName, int associationId,
             in VirtualDeviceParams params, in IVirtualDeviceActivityListener activityListener);
+
+    /**
+     * Creates a virtual display owned by a particular virtual device.
+     *
+     * @param virtualDisplayConfig The configuration used in creating the display
+     * @param callback A callback that receives display lifecycle events
+     * @param virtualDevice The device that will own this display
+     * @param packageName The package name of the calling app
+     */
+    int createVirtualDisplay(in VirtualDisplayConfig virtualDisplayConfig,
+            in IVirtualDisplayCallback callback, in IVirtualDevice virtualDevice,
+            String packageName);
 }

core/java/android/companion/virtual/VirtualDeviceManager.java

@@ -33,6 +33,8 @@ import android.content.Context;
 import android.graphics.Point;
 import android.hardware.display.DisplayManager;
 import android.hardware.display.DisplayManager.VirtualDisplayFlag;
+import android.hardware.display.DisplayManagerGlobal;
+import android.hardware.display.IVirtualDisplayCallback;
 import android.hardware.display.VirtualDisplay;
 import android.hardware.display.VirtualDisplayConfig;
 import android.hardware.input.VirtualKeyboard;
@@ -65,7 +67,7 @@ import java.util.function.IntConsumer;
 public final class VirtualDeviceManager {
 
     private static final boolean DEBUG = false;
-    private static final String LOG_TAG = "VirtualDeviceManager";
+    private static final String TAG = "VirtualDeviceManager";
 
     private static final int DEFAULT_VIRTUAL_DISPLAY_FLAGS =
             DisplayManager.VIRTUAL_DISPLAY_FLAG_PUBLIC
@@ -150,6 +152,7 @@ public final class VirtualDeviceManager {
     public static class VirtualDevice implements AutoCloseable {
 
         private final Context mContext;
+        private final IVirtualDeviceManager mService;
         private final IVirtualDevice mVirtualDevice;
         private final ArrayMap<ActivityListener, ActivityListenerDelegate> mActivityListeners =
                 new ArrayMap<>();
@@ -189,6 +192,7 @@ public final class VirtualDeviceManager {
                 Context context,
                 int associationId,
                 VirtualDeviceParams params) throws RemoteException {
+            mService = service;
             mContext = context.getApplicationContext();
             mVirtualDevice = service.createVirtualDevice(
                     new Binder(),
@@ -274,18 +278,23 @@ public final class VirtualDeviceManager {
             // TODO(b/205343547): Handle display groups properly instead of creating a new display
             //  group for every new virtual display created using this API.
             // belongs to the same display group.
-            DisplayManager displayManager = mContext.getSystemService(DisplayManager.class);
+            VirtualDisplayConfig config = new VirtualDisplayConfig.Builder(
-            // DisplayManager will call into VirtualDeviceManagerInternal to register the
+                    getVirtualDisplayName(), width, height, densityDpi)
-            // created displays.
+                    .setSurface(surface)
-            return displayManager.createVirtualDisplay(
+                    .setFlags(getVirtualDisplayFlags(flags))
-                    mVirtualDevice,
+                    .build();
-                    new VirtualDisplayConfig.Builder(
+            IVirtualDisplayCallback callbackWrapper =
-                            getVirtualDisplayName(), width, height, densityDpi)
+                    new DisplayManagerGlobal.VirtualDisplayCallback(callback, executor);
-                            .setSurface(surface)
+            final int displayId;
-                            .setFlags(getVirtualDisplayFlags(flags))
+            try {
-                            .build(),
+                displayId = mService.createVirtualDisplay(config, callbackWrapper, mVirtualDevice,
-                    callback,
+                        mContext.getPackageName());
-                    executor);
+            } catch (RemoteException ex) {
+                throw ex.rethrowFromSystemServer();
+            }
+            DisplayManagerGlobal displayManager = DisplayManagerGlobal.getInstance();
+            return displayManager.createVirtualDisplayWrapper(config, mContext, callbackWrapper,
+                    displayId);
         }
 
         /**

core/java/android/hardware/display/DisplayManager.java

@@ -31,7 +31,6 @@ import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
 import android.app.KeyguardManager;
-import android.companion.virtual.IVirtualDevice;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.Resources;
@@ -971,17 +970,8 @@ public final class DisplayManager {
             executor = new HandlerExecutor(
                     Handler.createAsync(handler != null ? handler.getLooper() : Looper.myLooper()));
         }
-        return mGlobal.createVirtualDisplay(mContext, projection, null /* virtualDevice */,
+        return mGlobal.createVirtualDisplay(mContext, projection, virtualDisplayConfig, callback,
-                virtualDisplayConfig, callback, executor, windowContext);
+                executor, windowContext);
-    }
-
-    /** @hide */
-    public VirtualDisplay createVirtualDisplay(@Nullable IVirtualDevice virtualDevice,
-            @NonNull VirtualDisplayConfig virtualDisplayConfig,
-            @Nullable VirtualDisplay.Callback callback,
-            @Nullable Executor executor) {
-        return mGlobal.createVirtualDisplay(mContext, null /* projection */, virtualDevice,
-                virtualDisplayConfig, callback, executor, null);
     }
 
     /**

core/java/android/hardware/display/DisplayManagerGlobal.java

@@ -24,7 +24,6 @@ import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.app.PropertyInvalidatedCache;
-import android.companion.virtual.IVirtualDevice;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.ParceledListSlice;
@@ -586,18 +585,28 @@ public final class DisplayManagerGlobal {
     }
 
     public VirtualDisplay createVirtualDisplay(@NonNull Context context, MediaProjection projection,
-            IVirtualDevice virtualDevice, @NonNull VirtualDisplayConfig virtualDisplayConfig,
+            @NonNull VirtualDisplayConfig virtualDisplayConfig, VirtualDisplay.Callback callback,
-            VirtualDisplay.Callback callback, @Nullable Executor executor,
+            @Nullable Executor executor, @Nullable Context windowContext) {
-            @Nullable Context windowContext) {
         VirtualDisplayCallback callbackWrapper = new VirtualDisplayCallback(callback, executor);
         IMediaProjection projectionToken = projection != null ? projection.getProjection() : null;
         int displayId;
         try {
             displayId = mDm.createVirtualDisplay(virtualDisplayConfig, callbackWrapper,
-                    projectionToken, virtualDevice, context.getPackageName());
+                    projectionToken, context.getPackageName());
         } catch (RemoteException ex) {
             throw ex.rethrowFromSystemServer();
         }
+        return createVirtualDisplayWrapper(virtualDisplayConfig, windowContext, callbackWrapper,
+                displayId);
+    }
+
+    /**
+     * Create a VirtualDisplay wrapper object for a newly created virtual display ; to be called
+     * once the display has been created in system_server.
+     */
+    @Nullable
+    public VirtualDisplay createVirtualDisplayWrapper(VirtualDisplayConfig virtualDisplayConfig,
+            Context windowContext, IVirtualDisplayCallback callbackWrapper, int displayId) {
         if (displayId < 0) {
             Log.e(TAG, "Could not create virtual display: " + virtualDisplayConfig.getName());
             return null;
@@ -1050,7 +1059,10 @@ public final class DisplayManagerGlobal {
         }
     }
 
-    private final static class VirtualDisplayCallback extends IVirtualDisplayCallback.Stub {
+    /**
+     * Assists in dispatching VirtualDisplay lifecycle event callbacks on a given Executor.
+     */
+    public static final class VirtualDisplayCallback extends IVirtualDisplayCallback.Stub {
         @Nullable private final VirtualDisplay.Callback mCallback;
         @Nullable private final Executor mExecutor;
 
@@ -1062,7 +1074,7 @@ public final class DisplayManagerGlobal {
          * @param executor The executor to call the {@code callback} on. Must not be {@code null} if
          * the callback is not {@code null}.
          */
-        VirtualDisplayCallback(VirtualDisplay.Callback callback, Executor executor) {
+        public VirtualDisplayCallback(VirtualDisplay.Callback callback, Executor executor) {
             mCallback = callback;
             mExecutor = mCallback != null ? Objects.requireNonNull(executor) : null;
         }

core/java/android/hardware/display/DisplayManagerInternal.java

@@ -18,6 +18,7 @@ package android.hardware.display;
 
 import android.annotation.IntDef;
 import android.annotation.Nullable;
+import android.companion.virtual.IVirtualDevice;
 import android.graphics.Point;
 import android.hardware.SensorManager;
 import android.os.Handler;
@@ -59,6 +60,14 @@ public abstract class DisplayManagerInternal {
     public abstract void initPowerManagement(DisplayPowerCallbacks callbacks,
             Handler handler, SensorManager sensorManager);
 
+    /**
+     * Called by the VirtualDeviceManagerService to create a VirtualDisplay owned by a
+     * VirtualDevice.
+     */
+    public abstract int createVirtualDisplay(VirtualDisplayConfig config,
+            IVirtualDisplayCallback callback, IVirtualDevice virtualDevice,
+            DisplayWindowPolicyController dwpc, String packageName);
+
     /**
      * Called by the power manager to request a new power state.
      * <p>

core/java/android/hardware/display/IDisplayManager.aidl

@@ -16,7 +16,6 @@
 
 package android.hardware.display;
 
-import android.companion.virtual.IVirtualDevice;
 import android.content.pm.ParceledListSlice;
 import android.graphics.Point;
 import android.hardware.display.BrightnessConfiguration;
@@ -88,10 +87,10 @@ interface IDisplayManager {
     void requestColorMode(int displayId, int colorMode);
 
     // Requires CAPTURE_VIDEO_OUTPUT, CAPTURE_SECURE_VIDEO_OUTPUT, or an appropriate
-    // MediaProjection token or VirtualDevice for certain combinations of flags.
+    // MediaProjection token for certain combinations of flags.
     int createVirtualDisplay(in VirtualDisplayConfig virtualDisplayConfig,
             in IVirtualDisplayCallback callback, in IMediaProjection projectionToken,
-            in IVirtualDevice virtualDevice, String packageName);
+            String packageName);
 
     // No permissions required, but must be same Uid as the creator.
     void resizeVirtualDisplay(in IVirtualDisplayCallback token,

services/companion/java/com/android/server/companion/virtual/GenericWindowPolicyController.java

@@ -48,7 +48,6 @@ import com.android.internal.app.BlockedAppStreamingActivity;
 
 import java.util.List;
 import java.util.Set;
-import java.util.function.Consumer;
 
 
 /**
@@ -66,6 +65,14 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
         void onRunningAppsChanged(ArraySet<Integer> runningUids);
     }
 
+    /**
+     * For communicating when activities are blocked from running on the display by this policy
+     * controller.
+     */
+    public interface ActivityBlockedCallback {
+        /** Called when an activity is blocked.*/
+        void onActivityBlocked(int displayId, ActivityInfo activityInfo);
+    }
     private static final ComponentName BLOCKED_APP_STREAMING_COMPONENT =
             new ComponentName("android", BlockedAppStreamingActivity.class.getName());
 
@@ -89,7 +96,8 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
     private final Object mGenericWindowPolicyControllerLock = new Object();
     @ActivityPolicy
     private final int mDefaultActivityPolicy;
-    private final Consumer<ActivityInfo> mActivityBlockedCallback;
+    private final ActivityBlockedCallback mActivityBlockedCallback;
+    private int mDisplayId = Display.INVALID_DISPLAY;
 
     @NonNull
     @GuardedBy("mGenericWindowPolicyControllerLock")
@@ -98,6 +106,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
     private final Handler mHandler = new Handler(Looper.getMainLooper());
     private final ArraySet<RunningAppsChangedListener> mRunningAppsChangedListener =
             new ArraySet<>();
+    @Nullable
     private final @AssociationRequest.DeviceProfile String mDeviceProfile;
 
     /**
@@ -119,8 +128,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
      *   {@link VirtualDeviceParams#ACTIVITY_POLICY_DEFAULT_ALLOWED}
      * @param defaultActivityPolicy Whether activities are default allowed to be displayed or
      *   blocked.
-     * @param activityListener Activity listener to listen for activity changes. The display ID
+     * @param activityListener Activity listener to listen for activity changes.
-     *   is not populated in this callback and is always {@link Display#INVALID_DISPLAY}.
      * @param activityBlockedCallback Callback that is called when an activity is blocked from
      *   launching.
      * @param deviceProfile The {@link AssociationRequest.DeviceProfile} of this virtual device.
@@ -133,7 +141,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
             @NonNull Set<ComponentName> blockedActivities,
             @ActivityPolicy int defaultActivityPolicy,
             @NonNull ActivityListener activityListener,
-            @NonNull Consumer<ActivityInfo> activityBlockedCallback,
+            @NonNull ActivityBlockedCallback activityBlockedCallback,
             @AssociationRequest.DeviceProfile String deviceProfile) {
         super();
         mAllowedUsers = allowedUsers;
@@ -148,6 +156,13 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
         mDeviceProfile = deviceProfile;
     }
 
+    /**
+     * Expected to be called once this object is associated with a newly created display.
+     */
+    public void setDisplayId(int displayId) {
+        mDisplayId = displayId;
+    }
+
     /** Register a listener for running applications changes. */
     public void registerRunningAppsChangedListener(@NonNull RunningAppsChangedListener listener) {
         mRunningAppsChangedListener.add(listener);
@@ -169,7 +184,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
         for (int i = 0; i < activityCount; i++) {
             final ActivityInfo aInfo = activities.get(i);
             if (!canContainActivity(aInfo, /* windowFlags= */ 0, /* systemWindowFlags= */ 0)) {
-                mActivityBlockedCallback.accept(aInfo);
+                mActivityBlockedCallback.onActivityBlocked(mDisplayId, aInfo);
                 return false;
             }
         }
@@ -191,7 +206,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
         }
 
         if (!canContainActivity(activityInfo, /* windowFlags= */  0, /* systemWindowFlags= */ 0)) {
-            mActivityBlockedCallback.accept(activityInfo);
+            mActivityBlockedCallback.onActivityBlocked(mDisplayId, activityInfo);
             return false;
         }
 
@@ -201,14 +216,14 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
         if (isNewTask && !mBlockedCrossTaskNavigations.isEmpty()
                 && mBlockedCrossTaskNavigations.contains(activityComponent)) {
             Slog.d(TAG, "Virtual device blocking cross task navigation of " + activityComponent);
-            mActivityBlockedCallback.accept(activityInfo);
+            mActivityBlockedCallback.onActivityBlocked(mDisplayId, activityInfo);
             return false;
         }
         if (isNewTask && !mAllowedCrossTaskNavigations.isEmpty()
                 && !mAllowedCrossTaskNavigations.contains(activityComponent)) {
             Slog.d(TAG, "Virtual device not allowing cross task navigation of "
                     + activityComponent);
-            mActivityBlockedCallback.accept(activityInfo);
+            mActivityBlockedCallback.onActivityBlocked(mDisplayId, activityInfo);
             return false;
         }
 
@@ -220,7 +235,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
     public boolean keepActivityOnWindowFlagsChanged(ActivityInfo activityInfo, int windowFlags,
             int systemWindowFlags) {
         if (!canContainActivity(activityInfo, windowFlags, systemWindowFlags)) {
-            mActivityBlockedCallback.accept(activityInfo);
+            mActivityBlockedCallback.onActivityBlocked(mDisplayId, activityInfo);
             return false;
         }
         return true;
@@ -234,7 +249,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
         if (mActivityListener != null && topActivity != null) {
             // Post callback on the main thread so it doesn't block activity launching
             mHandler.post(() ->
-                    mActivityListener.onTopActivityChanged(Display.INVALID_DISPLAY, topActivity));
+                    mActivityListener.onTopActivityChanged(mDisplayId, topActivity));
         }
     }
 
@@ -245,7 +260,7 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
             mRunningUids.addAll(runningUids);
             if (mActivityListener != null && mRunningUids.isEmpty()) {
                 // Post callback on the main thread so it doesn't block activity launching
-                mHandler.post(() -> mActivityListener.onDisplayEmpty(Display.INVALID_DISPLAY));
+                mHandler.post(() -> mActivityListener.onDisplayEmpty(mDisplayId));
             }
         }
         mHandler.post(() -> {
@@ -257,7 +272,10 @@ public class GenericWindowPolicyController extends DisplayWindowPolicyController
 
     @Override
     public boolean canShowTasksInRecents() {
-        // TODO(b/234075973) : Remove this once proper API is ready.
+        if (mDeviceProfile == null) {
+            return true;
+        }
+       // TODO(b/234075973) : Remove this once proper API is ready.
         switch (mDeviceProfile) {
             case DEVICE_PROFILE_AUTOMOTIVE_PROJECTION:
                 return false;

services/companion/java/com/android/server/companion/virtual/VirtualDeviceImpl.java

@@ -64,7 +64,6 @@ import android.util.SparseArray;
 import android.view.Display;
 import android.view.WindowManager;
 import android.widget.Toast;
-import android.window.DisplayWindowPolicyController;
 
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
@@ -110,11 +109,11 @@ final class VirtualDeviceImpl extends IVirtualDevice.Stub
     @GuardedBy("mVirtualDeviceLock")
     private boolean mDefaultShowPointerIcon = true;
 
-    private ActivityListener createListenerAdapter(int displayId) {
+    private ActivityListener createListenerAdapter() {
         return new ActivityListener() {
 
             @Override
-            public void onTopActivityChanged(int unusedDisplayId, ComponentName topActivity) {
+            public void onTopActivityChanged(int displayId, ComponentName topActivity) {
                 try {
                     mActivityListener.onTopActivityChanged(displayId, topActivity);
                 } catch (RemoteException e) {
@@ -123,7 +122,7 @@ final class VirtualDeviceImpl extends IVirtualDevice.Stub
             }
 
             @Override
-            public void onDisplayEmpty(int unusedDisplayId) {
+            public void onDisplayEmpty(int displayId) {
                 try {
                     mActivityListener.onDisplayEmpty(displayId);
                 } catch (RemoteException e) {
@@ -529,24 +528,8 @@ final class VirtualDeviceImpl extends IVirtualDevice.Stub
         mInputController.dump(fout);
     }
 
-    DisplayWindowPolicyController onVirtualDisplayCreatedLocked(int displayId) {
+    GenericWindowPolicyController createWindowPolicyController() {
         synchronized (mVirtualDeviceLock) {
-            if (mVirtualDisplayIds.contains(displayId)) {
-                throw new IllegalStateException(
-                        "Virtual device already have a virtual display with ID " + displayId);
-            }
-            mVirtualDisplayIds.add(displayId);
-            mInputController.setShowPointerIcon(mDefaultShowPointerIcon, displayId);
-            mInputController.setPointerAcceleration(1f, displayId);
-            mInputController.setDisplayEligibilityForPointerCapture(/* isEligible= */ false,
-                    displayId);
-            mInputController.setLocalIme(displayId);
-
-            // Since we're being called in the middle of the display being created, we post a
-            // task to grab the wakelock instead of doing it synchronously here, to avoid
-            // reentrancy  problems.
-            mContext.getMainThreadHandler().post(() -> addWakeLockForDisplay(displayId));
-
             final GenericWindowPolicyController gwpc =
                     new GenericWindowPolicyController(FLAG_SECURE,
                             SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS,
@@ -556,19 +539,36 @@ final class VirtualDeviceImpl extends IVirtualDevice.Stub
                             mParams.getAllowedActivities(),
                             mParams.getBlockedActivities(),
                             mParams.getDefaultActivityPolicy(),
-                            createListenerAdapter(displayId),
+                            createListenerAdapter(),
-                            activityInfo -> onActivityBlocked(displayId, activityInfo),
+                            this::onActivityBlocked,
                             mAssociationInfo.getDeviceProfile());
             gwpc.registerRunningAppsChangedListener(/* listener= */ this);
-            mWindowPolicyControllers.put(displayId, gwpc);
             return gwpc;
         }
     }
 
-    void addWakeLockForDisplay(int displayId) {
+    void onVirtualDisplayCreatedLocked(GenericWindowPolicyController gwpc, int displayId) {
         synchronized (mVirtualDeviceLock) {
-            if (!mVirtualDisplayIds.contains(displayId)
+            if (displayId == Display.INVALID_DISPLAY) {
-                    || mPerDisplayWakelocks.containsKey(displayId)) {
+                return;
+            }
+            if (mVirtualDisplayIds.contains(displayId)) {
+                throw new IllegalStateException(
+                        "Virtual device already has a virtual display with ID " + displayId);
+            }
+            mVirtualDisplayIds.add(displayId);
+
+            gwpc.setDisplayId(displayId);
+            mWindowPolicyControllers.put(displayId, gwpc);
+
+            mInputController.setShowPointerIcon(mDefaultShowPointerIcon, displayId);
+            mInputController.setPointerAcceleration(1f, displayId);
+            mInputController.setDisplayEligibilityForPointerCapture(/* isEligible= */ false,
+                    displayId);
+            mInputController.setLocalIme(displayId);
+
+
+            if (mPerDisplayWakelocks.containsKey(displayId)) {
                 Slog.e(TAG, "Not creating wakelock for displayId " + displayId);
                 return;
             }
@@ -576,8 +576,8 @@ final class VirtualDeviceImpl extends IVirtualDevice.Stub
             PowerManager.WakeLock wakeLock = powerManager.newWakeLock(
                     PowerManager.SCREEN_BRIGHT_WAKE_LOCK,
                     TAG + ":" + displayId, displayId);
-            wakeLock.acquire();
             mPerDisplayWakelocks.put(displayId, wakeLock);
+            wakeLock.acquire();
         }
     }
 

services/companion/java/com/android/server/companion/virtual/VirtualDeviceManagerService.java

@@ -31,6 +31,10 @@ import android.companion.virtual.IVirtualDeviceManager;
 import android.companion.virtual.VirtualDeviceManager;
 import android.companion.virtual.VirtualDeviceParams;
 import android.content.Context;
+import android.hardware.display.DisplayManagerInternal;
+import android.hardware.display.IVirtualDisplayCallback;
+import android.hardware.display.VirtualDisplayConfig;
+import android.os.Binder;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Looper;
@@ -41,9 +45,9 @@ import android.util.ExceptionUtils;
 import android.util.Slog;
 import android.util.SparseArray;
 import android.widget.Toast;
-import android.window.DisplayWindowPolicyController;
 
 import com.android.internal.annotations.GuardedBy;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.DumpUtils;
 import com.android.server.SystemService;
 import com.android.server.companion.virtual.VirtualDeviceImpl.PendingTrampoline;
@@ -203,6 +207,7 @@ public class VirtualDeviceManagerService extends SystemService {
         }
     }
 
+    @VisibleForTesting
     class VirtualDeviceManagerImpl extends IVirtualDeviceManager.Stub implements
             VirtualDeviceImpl.PendingTrampolineCallback {
 
@@ -265,6 +270,50 @@ public class VirtualDeviceManagerService extends SystemService {
             }
         }
 
+        @Override // Binder call
+        public int createVirtualDisplay(VirtualDisplayConfig virtualDisplayConfig,
+                IVirtualDisplayCallback callback, IVirtualDevice virtualDevice, String packageName)
+                throws RemoteException {
+            final int callingUid = getCallingUid();
+            if (!PermissionUtils.validateCallingPackageName(getContext(), packageName)) {
+                throw new SecurityException(
+                        "Package name " + packageName + " does not belong to calling uid "
+                                + callingUid);
+            }
+            VirtualDeviceImpl virtualDeviceImpl;
+            synchronized (mVirtualDeviceManagerLock) {
+                virtualDeviceImpl = mVirtualDevices.get(virtualDevice.getAssociationId());
+                if (virtualDeviceImpl == null) {
+                    throw new SecurityException("Invalid VirtualDevice");
+                }
+            }
+            if (virtualDeviceImpl.getOwnerUid() != callingUid) {
+                throw new SecurityException(
+                        "uid " + callingUid
+                                + " is not the owner of the supplied VirtualDevice");
+            }
+            GenericWindowPolicyController gwpc;
+            final long token = Binder.clearCallingIdentity();
+            try {
+                gwpc = virtualDeviceImpl.createWindowPolicyController();
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+
+            DisplayManagerInternal displayManager = getLocalService(
+                    DisplayManagerInternal.class);
+            int displayId = displayManager.createVirtualDisplay(virtualDisplayConfig, callback,
+                    virtualDevice, gwpc, packageName);
+
+            final long tokenTwo = Binder.clearCallingIdentity();
+            try {
+                virtualDeviceImpl.onVirtualDisplayCreatedLocked(gwpc, displayId);
+                return displayId;
+            } finally {
+                Binder.restoreCallingIdentity(tokenTwo);
+            }
+        }
+
         @Nullable
         private AssociationInfo getAssociationInfo(String packageName, int associationId) {
             final int callingUserId = getCallingUserHandle().getIdentifier();
@@ -336,14 +385,6 @@ public class VirtualDeviceManagerService extends SystemService {
             }
         }
 
-        @Override
-        public DisplayWindowPolicyController onVirtualDisplayCreated(IVirtualDevice virtualDevice,
-                int displayId) {
-            synchronized (mVirtualDeviceManagerLock) {
-                return ((VirtualDeviceImpl) virtualDevice).onVirtualDisplayCreatedLocked(displayId);
-            }
-        }
-
         @Override
         public void onVirtualDisplayRemoved(IVirtualDevice virtualDevice, int displayId) {
             synchronized (mVirtualDeviceManagerLock) {

services/core/java/com/android/server/companion/virtual/VirtualDeviceManagerInternal.java

@@ -17,7 +17,6 @@
 package com.android.server.companion.virtual;
 
 import android.companion.virtual.IVirtualDevice;
-import android.window.DisplayWindowPolicyController;
 
 /**
  * Virtual device manager local service interface.
@@ -30,17 +29,6 @@ public abstract class VirtualDeviceManagerInternal {
      */
     public abstract boolean isValidVirtualDevice(IVirtualDevice virtualDevice);
 
-    /**
-     * Notify a virtual display is created.
-     *
-     * @param virtualDevice The virtual device where the virtual display located.
-     * @param displayId The display id of the created virtual display.
-     *
-     * @return The {@link DisplayWindowPolicyController} of the virtual device.
-     */
-    public abstract DisplayWindowPolicyController onVirtualDisplayCreated(
-            IVirtualDevice virtualDevice, int displayId);
-
     /**
      * Notify a virtual display is removed.
      *

services/core/java/com/android/server/display/DisplayManagerService.java

@@ -1231,7 +1231,7 @@ public final class DisplayManagerService extends SystemService {
 
     private int createVirtualDisplayInternal(VirtualDisplayConfig virtualDisplayConfig,
             IVirtualDisplayCallback callback, IMediaProjection projection,
-            IVirtualDevice virtualDevice, String packageName) {
+            IVirtualDevice virtualDevice, DisplayWindowPolicyController dwpc, String packageName) {
         final int callingUid = Binder.getCallingUid();
         if (!validatePackageName(callingUid, packageName)) {
             throw new SecurityException("packageName must match the calling uid");
@@ -1351,8 +1351,13 @@ public final class DisplayManagerService extends SystemService {
         final long token = Binder.clearCallingIdentity();
         try {
             synchronized (mSyncRoot) {
-                return createVirtualDisplayLocked(callback, projection, virtualDevice, callingUid,
+                final int displayId = createVirtualDisplayLocked(callback, projection, callingUid,
                         packageName, surface, flags, virtualDisplayConfig);
+                if (displayId != Display.INVALID_DISPLAY && virtualDevice != null && dwpc != null) {
+                    mDisplayWindowPolicyControllers.put(displayId,
+                            Pair.create(virtualDevice, dwpc));
+                }
+                return displayId;
             }
         } finally {
             Binder.restoreCallingIdentity(token);
@@ -1360,8 +1365,7 @@ public final class DisplayManagerService extends SystemService {
     }
 
     private int createVirtualDisplayLocked(IVirtualDisplayCallback callback,
-            IMediaProjection projection, IVirtualDevice virtualDevice,
+            IMediaProjection projection, int callingUid, String packageName, Surface surface,
-            int callingUid, String packageName, Surface surface,
             int flags, VirtualDisplayConfig virtualDisplayConfig) {
         if (mVirtualDisplayAdapter == null) {
             Slog.w(TAG, "Rejecting request to create private virtual display "
@@ -1389,16 +1393,7 @@ public final class DisplayManagerService extends SystemService {
 
         final LogicalDisplay display = mLogicalDisplayMapper.getDisplayLocked(device);
         if (display != null) {
-            final int displayId = display.getDisplayIdLocked();
+            return display.getDisplayIdLocked();
-            if (virtualDevice != null) {
-                final VirtualDeviceManagerInternal vdm =
-                        getLocalService(VirtualDeviceManagerInternal.class);
-                final DisplayWindowPolicyController controller =
-                        vdm.onVirtualDisplayCreated(virtualDevice, displayId);
-                mDisplayWindowPolicyControllers.put(displayId,
-                        Pair.create(virtualDevice, controller));
-            }
-            return displayId;
         }
 
         // Something weird happened and the logical display was not created.
@@ -3066,9 +3061,9 @@ public final class DisplayManagerService extends SystemService {
         @Override // Binder call
         public int createVirtualDisplay(VirtualDisplayConfig virtualDisplayConfig,
                 IVirtualDisplayCallback callback, IMediaProjection projection,
-                IVirtualDevice virtualDeviceToken, String packageName) {
+                String packageName) {
             return createVirtualDisplayInternal(virtualDisplayConfig, callback, projection,
-                    virtualDeviceToken, packageName);
+                    null, null, packageName);
         }
 
         @Override // Binder call
@@ -3534,7 +3529,8 @@ public final class DisplayManagerService extends SystemService {
         return !Float.isNaN(refreshRate) && (refreshRate > 0.0f);
     }
 
-    private final class LocalService extends DisplayManagerInternal {
+    @VisibleForTesting
+    final class LocalService extends DisplayManagerInternal {
 
         @Override
         public void initPowerManagement(final DisplayPowerCallbacks callbacks, Handler handler,
@@ -3549,6 +3545,14 @@ public final class DisplayManagerService extends SystemService {
             mHandler.sendEmptyMessage(MSG_LOAD_BRIGHTNESS_CONFIGURATIONS);
         }
 
+        @Override
+        public int createVirtualDisplay(VirtualDisplayConfig config,
+                IVirtualDisplayCallback callback, IVirtualDevice virtualDevice,
+                DisplayWindowPolicyController dwpc, String packageName) {
+            return createVirtualDisplayInternal(config, callback, null, virtualDevice, dwpc,
+                    packageName);
+        }
+
         @Override
         public boolean requestPowerState(int groupId, DisplayPowerRequest request,
                 boolean waitForNegativeProximity) {

services/tests/servicestests/src/com/android/server/companion/virtual/VirtualDeviceManagerServiceTest.java

@@ -228,36 +228,36 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void onVirtualDisplayRemovedLocked_doesNotThrowException() {
-        final int displayId = 2;
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
-        mDeviceImpl.onVirtualDisplayCreatedLocked(displayId);
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         // This call should not throw any exceptions.
-        mDeviceImpl.onVirtualDisplayRemovedLocked(displayId);
+        mDeviceImpl.onVirtualDisplayRemovedLocked(DISPLAY_ID);
     }
 
     @Test
     public void onVirtualDisplayCreatedLocked_wakeLockIsAcquired() throws RemoteException {
-        final int displayId = 2;
-        mDeviceImpl.onVirtualDisplayCreatedLocked(displayId);
         verify(mIPowerManagerMock, never()).acquireWakeLock(any(Binder.class), anyInt(),
                 nullable(String.class), nullable(String.class), nullable(WorkSource.class),
                 nullable(String.class), anyInt(), eq(null));
-        TestableLooper.get(this).processAllMessages();
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         verify(mIPowerManagerMock, Mockito.times(1)).acquireWakeLock(any(Binder.class), anyInt(),
                 nullable(String.class), nullable(String.class), nullable(WorkSource.class),
-                nullable(String.class), eq(displayId), eq(null));
+                nullable(String.class), eq(DISPLAY_ID), eq(null));
     }
 
     @Test
     public void onVirtualDisplayCreatedLocked_duplicateCalls_onlyOneWakeLockIsAcquired()
             throws RemoteException {
-        final int displayId = 2;
+        GenericWindowPolicyController gwpc = mDeviceImpl.createWindowPolicyController();
-        mDeviceImpl.onVirtualDisplayCreatedLocked(displayId);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         assertThrows(IllegalStateException.class,
-                () -> mDeviceImpl.onVirtualDisplayCreatedLocked(displayId));
+                () -> mDeviceImpl.onVirtualDisplayCreatedLocked(gwpc, DISPLAY_ID));
         TestableLooper.get(this).processAllMessages();
         verify(mIPowerManagerMock, Mockito.times(1)).acquireWakeLock(any(Binder.class), anyInt(),
                 nullable(String.class), nullable(String.class), nullable(WorkSource.class),
-                nullable(String.class), eq(displayId), eq(null));
+                nullable(String.class), eq(DISPLAY_ID), eq(null));
     }
 
     @Test
@@ -269,30 +269,30 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void onVirtualDisplayRemovedLocked_wakeLockIsReleased() throws RemoteException {
-        final int displayId = 2;
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
-        mDeviceImpl.onVirtualDisplayCreatedLocked(displayId);
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         ArgumentCaptor<IBinder> wakeLockCaptor = ArgumentCaptor.forClass(IBinder.class);
         TestableLooper.get(this).processAllMessages();
         verify(mIPowerManagerMock, Mockito.times(1)).acquireWakeLock(wakeLockCaptor.capture(),
                 anyInt(),
                 nullable(String.class), nullable(String.class), nullable(WorkSource.class),
-                nullable(String.class), eq(displayId), eq(null));
+                nullable(String.class), eq(DISPLAY_ID), eq(null));
 
         IBinder wakeLock = wakeLockCaptor.getValue();
-        mDeviceImpl.onVirtualDisplayRemovedLocked(displayId);
+        mDeviceImpl.onVirtualDisplayRemovedLocked(DISPLAY_ID);
         verify(mIPowerManagerMock, Mockito.times(1)).releaseWakeLock(eq(wakeLock), anyInt());
     }
 
     @Test
     public void addVirtualDisplay_displayNotReleased_wakeLockIsReleased() throws RemoteException {
-        final int displayId = 2;
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
-        mDeviceImpl.onVirtualDisplayCreatedLocked(displayId);
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         ArgumentCaptor<IBinder> wakeLockCaptor = ArgumentCaptor.forClass(IBinder.class);
         TestableLooper.get(this).processAllMessages();
         verify(mIPowerManagerMock, Mockito.times(1)).acquireWakeLock(wakeLockCaptor.capture(),
                 anyInt(),
                 nullable(String.class), nullable(String.class), nullable(WorkSource.class),
-                nullable(String.class), eq(displayId), eq(null));
+                nullable(String.class), eq(DISPLAY_ID), eq(null));
         IBinder wakeLock = wakeLockCaptor.getValue();
 
         // Close the VirtualDevice without first notifying it of the VirtualDisplay removal.
@@ -416,7 +416,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void onAudioSessionStarting_hasVirtualAudioController() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
 
         mDeviceImpl.onAudioSessionStarting(DISPLAY_ID, mRoutingCallback, mConfigChangedCallback);
 
@@ -425,7 +426,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void onAudioSessionEnded_noVirtualAudioController() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         mDeviceImpl.onAudioSessionStarting(DISPLAY_ID, mRoutingCallback, mConfigChangedCallback);
 
         mDeviceImpl.onAudioSessionEnded();
@@ -435,7 +437,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void close_cleanVirtualAudioController() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         mDeviceImpl.onAudioSessionStarting(DISPLAY_ID, mRoutingCallback, mConfigChangedCallback);
 
         mDeviceImpl.close();
@@ -659,7 +662,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void openNonBlockedAppOnVirtualDisplay_doesNotStartBlockedAlertActivity() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         GenericWindowPolicyController gwpc = mDeviceImpl.getWindowPolicyControllersForTesting().get(
                 DISPLAY_ID);
         doNothing().when(mContext).startActivityAsUser(any(), any(), any());
@@ -677,7 +681,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void openPermissionControllerOnVirtualDisplay_startBlockedAlertActivity() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         GenericWindowPolicyController gwpc = mDeviceImpl.getWindowPolicyControllersForTesting().get(
                 DISPLAY_ID);
         doNothing().when(mContext).startActivityAsUser(any(), any(), any());
@@ -695,7 +700,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void openSettingsOnVirtualDisplay_startBlockedAlertActivity() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         GenericWindowPolicyController gwpc = mDeviceImpl.getWindowPolicyControllersForTesting().get(
                 DISPLAY_ID);
         doNothing().when(mContext).startActivityAsUser(any(), any(), any());
@@ -713,7 +719,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void openVendingOnVirtualDisplay_startBlockedAlertActivity() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         GenericWindowPolicyController gwpc = mDeviceImpl.getWindowPolicyControllersForTesting().get(
                 DISPLAY_ID);
         doNothing().when(mContext).startActivityAsUser(any(), any(), any());
@@ -731,7 +738,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void openGoogleDialerOnVirtualDisplay_startBlockedAlertActivity() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         GenericWindowPolicyController gwpc = mDeviceImpl.getWindowPolicyControllersForTesting().get(
                 DISPLAY_ID);
         doNothing().when(mContext).startActivityAsUser(any(), any(), any());
@@ -749,7 +757,8 @@ public class VirtualDeviceManagerServiceTest {
 
     @Test
     public void openGoogleMapsOnVirtualDisplay_startBlockedAlertActivity() {
-        mDeviceImpl.onVirtualDisplayCreatedLocked(DISPLAY_ID);
+        mDeviceImpl.onVirtualDisplayCreatedLocked(
+                mDeviceImpl.createWindowPolicyController(), DISPLAY_ID);
         GenericWindowPolicyController gwpc = mDeviceImpl.getWindowPolicyControllersForTesting().get(
                 DISPLAY_ID);
         doNothing().when(mContext).startActivityAsUser(any(), any(), any());

services/tests/servicestests/src/com/android/server/display/DisplayManagerServiceTest.java

@@ -45,6 +45,7 @@ import android.hardware.display.BrightnessConfiguration;
 import android.hardware.display.Curve;
 import android.hardware.display.DisplayManager;
 import android.hardware.display.DisplayManagerGlobal;
+import android.hardware.display.DisplayManagerInternal;
 import android.hardware.display.DisplayViewport;
 import android.hardware.display.DisplayedContentSample;
 import android.hardware.display.DisplayedContentSamplingAttributes;
@@ -63,6 +64,7 @@ import android.view.DisplayEventReceiver;
 import android.view.DisplayInfo;
 import android.view.Surface;
 import android.view.SurfaceControl;
+import android.window.DisplayWindowPolicyController;
 
 import androidx.test.InstrumentationRegistry;
 import androidx.test.core.app.ApplicationProvider;
@@ -220,7 +222,7 @@ public class DisplayManagerServiceTest {
         builder.setUniqueId(uniqueId);
         builder.setFlags(flags);
         int displayId = bs.createVirtualDisplay(builder.build(), mMockAppToken /* callback */,
-                null /* projection */, null /* virtualDeviceToken */, PACKAGE_NAME);
+                null /* projection */, PACKAGE_NAME);
 
         displayManager.performTraversalInternal(mock(SurfaceControl.Transaction.class));
 
@@ -346,7 +348,7 @@ public class DisplayManagerServiceTest {
         builder.setFlags(flags);
         builder.setUniqueId(uniqueId);
         int displayId = bs.createVirtualDisplay(builder.build(), mMockAppToken /* callback */,
-                null /* projection */, null /* virtualDeviceToken */, PACKAGE_NAME);
+                null /* projection */, PACKAGE_NAME);
 
         displayManager.performTraversalInternal(mock(SurfaceControl.Transaction.class));
 
@@ -586,8 +588,7 @@ public class DisplayManagerServiceTest {
                 VIRTUAL_DISPLAY_NAME, width, height, dpi);
         builder.setUniqueId(uniqueId);
         final int firstDisplayId = binderService.createVirtualDisplay(builder.build(),
-                mMockAppToken /* callback */, null /* projection */, null /* virtualDeviceToken */,
+                mMockAppToken /* callback */, null /* projection */, PACKAGE_NAME);
-                PACKAGE_NAME);
 
         // The second virtual display requests to mirror the first virtual display.
         final String uniqueId2 = "uniqueId --- displayIdToMirrorTest #2";
@@ -598,7 +599,7 @@ public class DisplayManagerServiceTest {
         builder2.setDisplayIdToMirror(firstDisplayId);
         final int secondDisplayId = binderService.createVirtualDisplay(builder2.build(),
                 mMockAppToken2 /* callback */, null /* projection */,
-                null /* virtualDeviceToken */, PACKAGE_NAME);
+                PACKAGE_NAME);
         displayManager.performTraversalInternal(mock(SurfaceControl.Transaction.class));
 
         // flush the handler
@@ -636,8 +637,7 @@ public class DisplayManagerServiceTest {
         builder.setSurface(surface);
         builder.setUniqueId(uniqueId);
         final int displayId = binderService.createVirtualDisplay(builder.build(),
-                mMockAppToken /* callback */, null /* projection */, null /* virtualDeviceToken */,
+                mMockAppToken /* callback */, null /* projection */, PACKAGE_NAME);
-                PACKAGE_NAME);
 
         displayManager.performTraversalInternal(mock(SurfaceControl.Transaction.class));
 
@@ -669,7 +669,7 @@ public class DisplayManagerServiceTest {
         builder.setUniqueId("uniqueId --- OWN_DISPLAY_GROUP");
 
         int displayId = bs.createVirtualDisplay(builder.build(), mMockAppToken /* callback */,
-                null /* projection */, null /* virtualDeviceToken */, PACKAGE_NAME);
+                null /* projection */, PACKAGE_NAME);
         displayManager.performTraversalInternal(mock(SurfaceControl.Transaction.class));
         displayManager.getDisplayHandler().runWithScissors(() -> {}, 0 /* now */);
         DisplayDeviceInfo ddi = displayManager.getDisplayDeviceInfoInternal(displayId);
@@ -700,7 +700,7 @@ public class DisplayManagerServiceTest {
 
         try {
             bs.createVirtualDisplay(builder.build(), mMockAppToken /* callback */,
-                    null /* projection */, null /* virtualDeviceToken */, PACKAGE_NAME);
+                    null /* projection */, PACKAGE_NAME);
             fail("Creating virtual display with VIRTUAL_DISPLAY_FLAG_OWN_DISPLAY_GROUP without "
                     + "ADD_TRUSTED_DISPLAY permission should throw SecurityException.");
         } catch (SecurityException e) {
@@ -716,6 +716,8 @@ public class DisplayManagerServiceTest {
     public void testOwnDisplayGroup_allowCreationWithVirtualDevice() {
         DisplayManagerService displayManager =
                 new DisplayManagerService(mContext, mBasicInjector);
+        DisplayManagerInternal localService = displayManager.new LocalService();
+
         registerDefaultDisplays(displayManager);
 
         DisplayManagerService.BinderService bs = displayManager.new BinderService();
@@ -733,8 +735,9 @@ public class DisplayManagerServiceTest {
         when(mMockVirtualDeviceManagerInternal.isValidVirtualDevice(virtualDevice))
             .thenReturn(true);
 
-        int displayId = bs.createVirtualDisplay(builder.build(), mMockAppToken /* callback */,
+        int displayId = localService.createVirtualDisplay(builder.build(),
-                null /* projection */, virtualDevice /* virtualDeviceToken */, PACKAGE_NAME);
+                mMockAppToken /* callback */, virtualDevice /* virtualDeviceToken */,
+                mock(DisplayWindowPolicyController.class), PACKAGE_NAME);
         displayManager.performTraversalInternal(mock(SurfaceControl.Transaction.class));
         displayManager.getDisplayHandler().runWithScissors(() -> {}, 0 /* now */);
         DisplayDeviceInfo ddi = displayManager.getDisplayDeviceInfoInternal(displayId);