(ImsService API changes for Better IMS Threading) ImsService to execute binder calls in Executor.

In order to avoid undefined behavior when the framework calls a method through IPC, the ImsService
will now be able to define an Executor that the ImsService can be used to execute the methods

By default all ImsService level method calls will use this Executor.
Sub-classes will also use this Executor unless specified via constuctor which takes executor as an argument.

Test: atest CtsTelephonyTestCases:ImsCallingTest
Bug: 171037053
Change-Id: I10621f9a767ba5bc55373f49caf426e66adbec77

core/api/system-current.txt

@@ -13506,6 +13506,7 @@ package android.telephony.ims {
     method public void disableIms(int);
     method public void enableIms(int);
     method public android.telephony.ims.stub.ImsConfigImplBase getConfig(int);
+    method @NonNull public java.util.concurrent.Executor getExecutor();
     method public long getImsServiceCapabilities();
     method public android.telephony.ims.stub.ImsRegistrationImplBase getRegistration(int);
     method @Nullable public android.telephony.ims.stub.SipTransportImplBase getSipTransport(int);
@@ -14121,6 +14122,7 @@ package android.telephony.ims.feature {
 
   public class MmTelFeature extends android.telephony.ims.feature.ImsFeature {
     ctor public MmTelFeature();
+    ctor public MmTelFeature(@NonNull java.util.concurrent.Executor);
     method public void changeEnabledCapabilities(@NonNull android.telephony.ims.feature.CapabilityChangeRequest, @NonNull android.telephony.ims.feature.ImsFeature.CapabilityCallbackProxy);
     method public void changeOfferedRtpHeaderExtensionTypes(@NonNull java.util.Set<android.telephony.ims.RtpHeaderExtensionType>);
     method @Nullable public android.telephony.ims.ImsCallProfile createCallProfile(int, int);
@@ -14154,7 +14156,7 @@ package android.telephony.ims.feature {
   }
 
   public class RcsFeature extends android.telephony.ims.feature.ImsFeature {
-    ctor @Deprecated public RcsFeature();
+    ctor public RcsFeature();
     ctor public RcsFeature(@NonNull java.util.concurrent.Executor);
     method public void changeEnabledCapabilities(@NonNull android.telephony.ims.feature.CapabilityChangeRequest, @NonNull android.telephony.ims.feature.ImsFeature.CapabilityCallbackProxy);
     method @NonNull public android.telephony.ims.stub.RcsCapabilityExchangeImplBase createCapabilityExchangeImpl(@NonNull android.telephony.ims.stub.CapabilityExchangeEventListener);
@@ -14258,6 +14260,7 @@ package android.telephony.ims.stub {
   }
 
   public class ImsConfigImplBase {
+    ctor public ImsConfigImplBase(@NonNull java.util.concurrent.Executor);
     ctor public ImsConfigImplBase();
     method public int getConfigInt(int);
     method public String getConfigString(int);
@@ -14310,6 +14313,7 @@ package android.telephony.ims.stub {
 
   public class ImsRegistrationImplBase {
     ctor public ImsRegistrationImplBase();
+    ctor public ImsRegistrationImplBase(@NonNull java.util.concurrent.Executor);
     method public final void onDeregistered(android.telephony.ims.ImsReasonInfo);
     method public final void onRegistered(int);
     method public final void onRegistered(@NonNull android.telephony.ims.ImsRegistrationAttributes);
@@ -14422,6 +14426,7 @@ package android.telephony.ims.stub {
   }
 
   public class SipTransportImplBase {
+    ctor public SipTransportImplBase();
     ctor public SipTransportImplBase(@NonNull java.util.concurrent.Executor);
     method public void createSipDelegate(int, @NonNull android.telephony.ims.DelegateRequest, @NonNull android.telephony.ims.DelegateStateCallback, @NonNull android.telephony.ims.DelegateMessageCallback);
     method public void destroySipDelegate(@NonNull android.telephony.ims.stub.SipDelegate, int);

telephony/java/android/telephony/ims/ImsService.java

@@ -17,6 +17,7 @@
 package android.telephony.ims;
 
 import android.annotation.LongDef;
+import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
@@ -44,11 +45,18 @@ import android.util.SparseArray;
 
 import com.android.ims.internal.IImsFeatureStatusCallback;
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
+import java.util.function.Supplier;
 
 /**
  * Main ImsService implementation, which binds via the Telephony ImsResolver. Services that extend
@@ -173,7 +181,21 @@ public class ImsService extends Service {
     private final SparseArray<SparseArray<ImsFeature>> mFeaturesBySlot = new SparseArray<>();
 
     private IImsServiceControllerListener mListener;
+    private Executor mExecutor;
 
+    /**
+     * Create a new ImsService.
+     * <p>
+     * Method stubs called from the framework will be called asynchronously. Vendor specifies the
+     * {@link Executor} that the methods stubs will be called. If mExecutor is set to null by
+     * vendor use Runnable::run.
+     */
+    public ImsService() {
+        mExecutor = ImsService.this.getExecutor();
+        if (mExecutor == null) {
+            mExecutor = Runnable::run;
+        }
+    }
 
     /**
      * Listener that notifies the framework of ImsService changes.
@@ -201,38 +223,45 @@ public class ImsService extends Service {
 
         @Override
         public IImsMmTelFeature createMmTelFeature(int slotId) {
-            return createMmTelFeatureInternal(slotId);
+            return executeMethodAsyncForResult(() -> createMmTelFeatureInternal(slotId),
+                "createMmTelFeature");
         }
 
         @Override
         public IImsRcsFeature createRcsFeature(int slotId) {
-            return createRcsFeatureInternal(slotId);
+            return executeMethodAsyncForResult(() -> createRcsFeatureInternal(slotId),
+                "createRcsFeature");
         }
 
         @Override
         public void addFeatureStatusCallback(int slotId, int featureType,
                 IImsFeatureStatusCallback c) {
-            ImsService.this.addImsFeatureStatusCallback(slotId, featureType, c);
+            executeMethodAsync(() -> ImsService.this.addImsFeatureStatusCallback(
+                    slotId, featureType, c), "addFeatureStatusCallback");
         }
 
         @Override
         public void removeFeatureStatusCallback(int slotId, int featureType,
                 IImsFeatureStatusCallback c) {
-            ImsService.this.removeImsFeatureStatusCallback(slotId, featureType, c);
+            executeMethodAsync(() -> ImsService.this.removeImsFeatureStatusCallback(
+                    slotId, featureType, c), "removeFeatureStatusCallback");
         }
 
         @Override
         public void removeImsFeature(int slotId, int featureType) {
-            ImsService.this.removeImsFeature(slotId, featureType);
+            executeMethodAsync(() -> ImsService.this.removeImsFeature(slotId, featureType),
+                    "removeImsFeature");
         }
 
         @Override
         public ImsFeatureConfiguration querySupportedImsFeatures() {
-            return ImsService.this.querySupportedImsFeatures();
+            return executeMethodAsyncForResult(() -> ImsService.this.querySupportedImsFeatures(),
+                    "ImsFeatureConfiguration");
         }
 
         @Override
         public long getImsServiceCapabilities() {
+            return executeMethodAsyncForResult(() -> {
                 long caps = ImsService.this.getImsServiceCapabilities();
                 long sanitizedCaps = sanitizeCapabilities(caps);
                 if (caps != sanitizedCaps) {
@@ -240,39 +269,86 @@ public class ImsService extends Service {
                             + Long.toHexString(caps ^ sanitizedCaps));
                 }
                 return sanitizedCaps;
+            }, "getImsServiceCapabilities");
         }
 
         @Override
         public void notifyImsServiceReadyForFeatureCreation() {
-            ImsService.this.readyForFeatureCreation();
+            executeMethodAsync(() -> ImsService.this.readyForFeatureCreation(),
+                    "notifyImsServiceReadyForFeatureCreation");
         }
 
         @Override
         public IImsConfig getConfig(int slotId) {
+            return executeMethodAsyncForResult(() -> {
                 ImsConfigImplBase c = ImsService.this.getConfig(slotId);
-            return c != null ? c.getIImsConfig() : null;
+                if (c != null) {
+                    c.setDefaultExecutor(mExecutor);
+                    return c.getIImsConfig();
+                } else {
+                    return null;
+                }
+            }, "getConfig");
         }
 
         @Override
         public IImsRegistration getRegistration(int slotId) {
+            return executeMethodAsyncForResult(() -> {
                 ImsRegistrationImplBase r =  ImsService.this.getRegistration(slotId);
-            return r != null ? r.getBinder() : null;
+                if (r != null) {
+                    r.setDefaultExecutor(mExecutor);
+                    return r.getBinder();
+                } else {
+                    return null;
+                }
+            }, "getRegistration");
         }
 
         @Override
         public ISipTransport getSipTransport(int slotId) {
+            return executeMethodAsyncForResult(() -> {
                 SipTransportImplBase s =  ImsService.this.getSipTransport(slotId);
-            return s != null ? s.getBinder() : null;
+                if (s != null) {
+                    s.setDefaultExecutor(mExecutor);
+                    return s.getBinder();
+                } else {
+                    return null;
+                }
+            }, "getSipTransport");
         }
 
         @Override
         public void enableIms(int slotId) {
-            ImsService.this.enableIms(slotId);
+            executeMethodAsync(() -> ImsService.this.enableIms(slotId), "enableIms");
         }
 
         @Override
         public void disableIms(int slotId) {
-            ImsService.this.disableIms(slotId);
+            executeMethodAsync(() -> ImsService.this.disableIms(slotId), "disableIms");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(LOG_TAG, "ImsService Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResult(Supplier<T> r, String errorLogName) {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(LOG_TAG, "ImsService Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                return null;
+            }
         }
     };
 
@@ -300,6 +376,7 @@ public class ImsService extends Service {
         MmTelFeature f = createMmTelFeature(slotId);
         if (f != null) {
             setupFeature(f, slotId, ImsFeature.FEATURE_MMTEL);
+            f.setDefaultExecutor(mExecutor);
             return f.getBinder();
         } else {
             Log.e(LOG_TAG, "createMmTelFeatureInternal: null feature returned.");
@@ -310,6 +387,7 @@ public class ImsService extends Service {
     private IImsRcsFeature createRcsFeatureInternal(int slotId) {
         RcsFeature f = createRcsFeature(slotId);
         if (f != null) {
+            f.setDefaultExecutor(mExecutor);
             setupFeature(f, slotId, ImsFeature.FEATURE_RCS);
             return f.getBinder();
         } else {
@@ -562,4 +640,15 @@ public class ImsService extends Service {
         result.append("}");
         return result.toString();
     }
+
+    /**
+     * The ImsService will now be able to define an Executor that the ImsService can be used to
+     * execute the methods. By default all ImsService level method calls will use this Executor.
+     * The ImsService has set the default executor as Runnable::run,
+     * Should be override or default executor will be used.
+     *  @return an Executor used to execute methods called remotely by the framework.
+     */
+    public @NonNull Executor getExecutor() {
+        return Runnable::run;
+    }
 }

telephony/java/android/telephony/ims/feature/MmTelFeature.java

@@ -40,16 +40,25 @@ import android.telephony.ims.stub.ImsRegistrationImplBase;
 import android.telephony.ims.stub.ImsSmsImplBase;
 import android.telephony.ims.stub.ImsUtImplBase;
 import android.util.ArraySet;
+import android.util.Log;
 
 import com.android.ims.internal.IImsCallSession;
 import com.android.ims.internal.IImsEcbm;
 import com.android.ims.internal.IImsMultiEndpoint;
 import com.android.ims.internal.IImsUt;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Supplier;
 
 /**
  * Base implementation for Voice and SMS (IR-92) and Video (IR-94) IMS support.
@@ -60,6 +69,7 @@ import java.util.Set;
 public class MmTelFeature extends ImsFeature {
 
     private static final String LOG_TAG = "MmTelFeature";
+    private Executor mExecutor;
 
     /**
      * @hide
@@ -68,160 +78,261 @@ public class MmTelFeature extends ImsFeature {
     public MmTelFeature() {
     }
 
+    /**
+     * Create a new MmTelFeature using the Executor specified for methods being called by the
+     * framework.
+     * @param executor The executor for the framework to use when executing the methods overridden
+     * by the implementation of MmTelFeature.
+     * @hide
+     */
+    @SystemApi
+    public MmTelFeature(@NonNull Executor executor) {
+        super();
+        mExecutor = executor;
+    }
+
     private final IImsMmTelFeature mImsMMTelBinder = new IImsMmTelFeature.Stub() {
 
         @Override
         public void setListener(IImsMmTelListener l) {
-            MmTelFeature.this.setListener(l);
+            executeMethodAsyncNoException(() -> MmTelFeature.this.setListener(l), "setListener");
         }
 
         @Override
         public int getFeatureState() throws RemoteException {
-            try {
+            return executeMethodAsyncForResult(() -> MmTelFeature.this.getFeatureState(),
-                return MmTelFeature.this.getFeatureState();
+                    "getFeatureState");
-            } catch (Exception e) {
-                throw new RemoteException(e.getMessage());
         }
-        }
-
 
         @Override
         public ImsCallProfile createCallProfile(int callSessionType, int callType)
                 throws RemoteException {
-            synchronized (mLock) {
+            return executeMethodAsyncForResult(() -> MmTelFeature.this.createCallProfile(
-                try {
+                    callSessionType, callType), "createCallProfile");
-                    return MmTelFeature.this.createCallProfile(callSessionType, callType);
-                } catch (Exception e) {
-                    throw new RemoteException(e.getMessage());
-                }
-            }
         }
 
         @Override
         public void changeOfferedRtpHeaderExtensionTypes(List<RtpHeaderExtensionType> types)
                 throws RemoteException {
-            synchronized (mLock) {
+            executeMethodAsync(() -> MmTelFeature.this.changeOfferedRtpHeaderExtensionTypes(
-                try {
+                    new ArraySet<>(types)), "changeOfferedRtpHeaderExtensionTypes");
-                    MmTelFeature.this.changeOfferedRtpHeaderExtensionTypes(new ArraySet<>(types));
-                } catch (Exception e) {
-                    throw new RemoteException(e.getMessage());
-                }
-            }
         }
 
         @Override
         public IImsCallSession createCallSession(ImsCallProfile profile) throws RemoteException {
-            synchronized (mLock) {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            IImsCallSession result = executeMethodAsyncForResult(() -> {
+                try {
                     return createCallSessionInterface(profile);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                    return null;
                 }
+            }, "createCallSession");
+
+            if (exceptionRef.get() != null) {
+                throw exceptionRef.get();
+            }
+
+            return result;
         }
 
         @Override
         public int shouldProcessCall(String[] numbers) {
-            synchronized (mLock) {
+            Integer result = executeMethodAsyncForResultNoException(() ->
-                return MmTelFeature.this.shouldProcessCall(numbers);
+                    MmTelFeature.this.shouldProcessCall(numbers), "shouldProcessCall");
+            if (result != null) {
+                return result.intValue();
+            } else {
+                return PROCESS_CALL_CSFB;
             }
         }
 
         @Override
         public IImsUt getUtInterface() throws RemoteException {
-            synchronized (mLock) {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            IImsUt result = executeMethodAsyncForResult(() -> {
+                try {
                     return MmTelFeature.this.getUtInterface();
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                    return null;
                 }
+            }, "getUtInterface");
+
+            if (exceptionRef.get() != null) {
+                throw exceptionRef.get();
+            }
+
+            return result;
         }
 
         @Override
         public IImsEcbm getEcbmInterface() throws RemoteException {
-            synchronized (mLock) {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            IImsEcbm result = executeMethodAsyncForResult(() -> {
+                try {
                     return MmTelFeature.this.getEcbmInterface();
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                    return null;
                 }
+            }, "getEcbmInterface");
+
+            if (exceptionRef.get() != null) {
+                throw exceptionRef.get();
+            }
+
+            return result;
         }
 
         @Override
         public void setUiTtyMode(int uiTtyMode, Message onCompleteMessage) throws RemoteException {
-            synchronized (mLock) {
+            executeMethodAsync(() -> MmTelFeature.this.setUiTtyMode(uiTtyMode, onCompleteMessage),
-                try {
+                    "setUiTtyMode");
-                    MmTelFeature.this.setUiTtyMode(uiTtyMode, onCompleteMessage);
-                } catch (Exception e) {
-                    throw new RemoteException(e.getMessage());
-                }
-            }
         }
 
         @Override
         public IImsMultiEndpoint getMultiEndpointInterface() throws RemoteException {
-            synchronized (mLock) {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            IImsMultiEndpoint result = executeMethodAsyncForResult(() -> {
+                try {
                     return MmTelFeature.this.getMultiEndpointInterface();
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                    return null;
                 }
+            }, "getMultiEndpointInterface");
+
+            if (exceptionRef.get() != null) {
+                throw exceptionRef.get();
+            }
+
+            return result;
         }
 
         @Override
         public int queryCapabilityStatus() {
-            return MmTelFeature.this.queryCapabilityStatus().mCapabilities;
+            Integer result = executeMethodAsyncForResultNoException(() -> MmTelFeature.this
+                    .queryCapabilityStatus().mCapabilities, "queryCapabilityStatus");
+
+            if (result != null) {
+                return result.intValue();
+            } else {
+                return 0;
+            }
         }
 
         @Override
         public void addCapabilityCallback(IImsCapabilityCallback c) {
-            // no need to lock, structure already handles multithreading.
+            executeMethodAsyncNoException(() -> MmTelFeature.this
-            MmTelFeature.this.addCapabilityCallback(c);
+                    .addCapabilityCallback(c), "addCapabilityCallback");
         }
 
         @Override
         public void removeCapabilityCallback(IImsCapabilityCallback c) {
-            // no need to lock, structure already handles multithreading.
+            executeMethodAsyncNoException(() -> MmTelFeature.this
-            MmTelFeature.this.removeCapabilityCallback(c);
+                    .removeCapabilityCallback(c), "removeCapabilityCallback");
         }
 
         @Override
         public void changeCapabilitiesConfiguration(CapabilityChangeRequest request,
                 IImsCapabilityCallback c) {
-            MmTelFeature.this.requestChangeEnabledCapabilities(request, c);
+            executeMethodAsyncNoException(() -> MmTelFeature.this
+                    .requestChangeEnabledCapabilities(request, c),
+                    "changeCapabilitiesConfiguration");
         }
 
         @Override
         public void queryCapabilityConfiguration(int capability, int radioTech,
                 IImsCapabilityCallback c) {
-            queryCapabilityConfigurationInternal(capability, radioTech, c);
+            executeMethodAsyncNoException(() -> queryCapabilityConfigurationInternal(
+                    capability, radioTech, c), "queryCapabilityConfiguration");
         }
 
         @Override
         public void setSmsListener(IImsSmsListener l) {
-            MmTelFeature.this.setSmsListener(l);
+            executeMethodAsyncNoException(() -> MmTelFeature.this.setSmsListener(l),
+                    "setSmsListener");
         }
 
         @Override
         public void sendSms(int token, int messageRef, String format, String smsc, boolean retry,
                 byte[] pdu) {
-            synchronized (mLock) {
+            executeMethodAsyncNoException(() -> MmTelFeature.this
-                MmTelFeature.this.sendSms(token, messageRef, format, smsc, retry, pdu);
+                    .sendSms(token, messageRef, format, smsc, retry, pdu), "sendSms");
-            }
         }
 
         @Override
         public void acknowledgeSms(int token, int messageRef, int result) {
-            synchronized (mLock) {
+            executeMethodAsyncNoException(() -> MmTelFeature.this
-                MmTelFeature.this.acknowledgeSms(token, messageRef, result);
+                    .acknowledgeSms(token, messageRef, result), "acknowledgeSms");
-            }
         }
 
         @Override
         public void acknowledgeSmsReport(int token, int messageRef, int result) {
-            synchronized (mLock) {
+            executeMethodAsyncNoException(() -> MmTelFeature.this
-                MmTelFeature.this.acknowledgeSmsReport(token, messageRef, result);
+                    .acknowledgeSmsReport(token, messageRef, result), "acknowledgeSmsReport");
-            }
         }
 
         @Override
         public String getSmsFormat() {
-            synchronized (mLock) {
+            return executeMethodAsyncForResultNoException(() -> MmTelFeature.this
-                return MmTelFeature.this.getSmsFormat();
+                    .getSmsFormat(), "getSmsFormat");
-            }
         }
 
         @Override
         public void onSmsReady() {
-            synchronized (mLock) {
+            executeMethodAsyncNoException(() -> MmTelFeature.this.onSmsReady(),
-                MmTelFeature.this.onSmsReady();
+                    "onSmsReady");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) throws RemoteException {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(LOG_TAG, "MmTelFeature Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
+        }
+
+        private void executeMethodAsyncNoException(Runnable r, String errorLogName) {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(LOG_TAG, "MmTelFeature Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResult(Supplier<T> r,
+                String errorLogName) throws RemoteException {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(LOG_TAG, "MmTelFeature Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResultNoException(Supplier<T> r,
+                String errorLogName) {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(LOG_TAG, "MmTelFeature Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                return null;
             }
         }
     };
@@ -672,7 +783,12 @@ public class MmTelFeature extends ImsFeature {
     public IImsCallSession createCallSessionInterface(ImsCallProfile profile)
             throws RemoteException {
         ImsCallSessionImplBase s = MmTelFeature.this.createCallSession(profile);
-        return s != null ? s.getServiceImpl() : null;
+        if (s != null) {
+            s.setDefaultExecutor(mExecutor);
+            return s.getServiceImpl();
+        } else {
+            return null;
+        }
     }
 
     /**
@@ -713,7 +829,12 @@ public class MmTelFeature extends ImsFeature {
      */
     protected IImsUt getUtInterface() throws RemoteException {
         ImsUtImplBase utImpl = getUt();
-        return utImpl != null ? utImpl.getInterface() : null;
+        if (utImpl != null) {
+            utImpl.setDefaultExecutor(mExecutor);
+            return utImpl.getInterface();
+        } else {
+            return null;
+        }
     }
 
     /**
@@ -721,7 +842,12 @@ public class MmTelFeature extends ImsFeature {
      */
     protected IImsEcbm getEcbmInterface() throws RemoteException {
         ImsEcbmImplBase ecbmImpl = getEcbm();
-        return ecbmImpl != null ? ecbmImpl.getImsEcbm() : null;
+        if (ecbmImpl != null) {
+            ecbmImpl.setDefaultExecutor(mExecutor);
+            return ecbmImpl.getImsEcbm();
+        } else {
+            return null;
+        }
     }
 
     /**
@@ -729,7 +855,12 @@ public class MmTelFeature extends ImsFeature {
      */
     public IImsMultiEndpoint getMultiEndpointInterface() throws RemoteException {
         ImsMultiEndpointImplBase multiendpointImpl = getMultiEndpoint();
-        return multiendpointImpl != null ? multiendpointImpl.getIImsMultiEndpoint() : null;
+        if (multiendpointImpl != null) {
+            multiendpointImpl.setDefaultExecutor(mExecutor);
+            return multiendpointImpl.getIImsMultiEndpoint();
+        } else {
+            return null;
+        }
     }
 
     /**
@@ -859,4 +990,16 @@ public class MmTelFeature extends ImsFeature {
     public final IImsMmTelFeature getBinder() {
         return mImsMMTelBinder;
     }
+
+    /**
+     * Set default Executor from ImsService.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of MmTelFeature.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        if (mExecutor == null) {
+            mExecutor = executor;
+        }
+    }
 }

telephony/java/android/telephony/ims/feature/RcsFeature.java

@@ -70,7 +70,7 @@ public class RcsFeature extends ImsFeature {
         // Reference the outer class in order to have better test coverage metrics instead of
         // creating a inner class referencing the outer class directly.
         private final RcsFeature mReference;
-        private final Executor mExecutor;
+        private Executor mExecutor;
 
         RcsFeatureBinder(RcsFeature classRef, @CallbackExecutor Executor executor) {
             mReference = classRef;
@@ -259,7 +259,7 @@ public class RcsFeature extends ImsFeature {
         }
     }
 
-    private final Executor mExecutor;
+    private Executor mExecutor;
     private final RcsFeatureBinder mImsRcsBinder;
     private RcsCapabilityExchangeImplBase mCapabilityExchangeImpl;
     private CapabilityExchangeEventListener mCapExchangeEventListener;
@@ -270,13 +270,9 @@ public class RcsFeature extends ImsFeature {
      * Method stubs called from the framework will be called asynchronously. To specify the
      * {@link Executor} that the methods stubs will be called, use
      * {@link RcsFeature#RcsFeature(Executor)} instead.
-     *
-     * @deprecated Use {@link #RcsFeature(Executor)} to create the RcsFeature.
      */
-    @Deprecated
     public RcsFeature() {
         super();
-        mExecutor = Runnable::run;
         // Run on the Binder threads that call them.
         mImsRcsBinder = new RcsFeatureBinder(this, mExecutor);
     }
@@ -477,4 +473,17 @@ public class RcsFeature extends ImsFeature {
             return mCapabilityExchangeImpl;
         }
     }
+
+    /**
+     * Set default Executor from ImsService.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of RcsFeature.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        if (mImsRcsBinder.mExecutor == null) {
+            mExecutor = executor;
+            mImsRcsBinder.mExecutor = executor;
+        }
+    }
 }

telephony/java/android/telephony/ims/stub/ImsCallSessionImplBase.java

@@ -30,12 +30,20 @@ import android.telephony.ims.RtpHeaderExtension;
 import android.telephony.ims.RtpHeaderExtensionType;
 import android.telephony.ims.aidl.IImsCallSessionListener;
 import android.util.ArraySet;
+import android.util.Log;
 
 import com.android.ims.internal.IImsCallSession;
 import com.android.ims.internal.IImsVideoCallProvider;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
+import java.util.function.Supplier;
 
 /**
  * Base implementation of IImsCallSession, which implements stub versions of the methods available.
@@ -48,6 +56,8 @@ import java.util.Set;
 // DO NOT remove or change the existing APIs, only add new ones to this Base implementation or you
 // will break other implementations of ImsCallSession maintained by other ImsServices.
 public class ImsCallSessionImplBase implements AutoCloseable {
+
+    private static final String LOG_TAG = "ImsCallSessionImplBase";
     /**
      * Notify USSD Mode.
      */
@@ -110,185 +120,235 @@ public class ImsCallSessionImplBase implements AutoCloseable {
         }
     }
 
+    private Executor mExecutor = Runnable::run;
+
     // Non-final for injection by tests
     private IImsCallSession mServiceImpl = new IImsCallSession.Stub() {
         @Override
         public void close() {
-            ImsCallSessionImplBase.this.close();
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.close(), "close");
         }
 
         @Override
         public String getCallId() {
-            return ImsCallSessionImplBase.this.getCallId();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this.getCallId(),
+                    "getCallId");
         }
 
         @Override
         public ImsCallProfile getCallProfile() {
-            return ImsCallSessionImplBase.this.getCallProfile();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this.getCallProfile(),
+                    "getCallProfile");
         }
 
         @Override
         public ImsCallProfile getLocalCallProfile() {
-            return ImsCallSessionImplBase.this.getLocalCallProfile();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this
+                    .getLocalCallProfile(), "getLocalCallProfile");
         }
 
         @Override
         public ImsCallProfile getRemoteCallProfile() {
-            return ImsCallSessionImplBase.this.getRemoteCallProfile();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this
+                    .getRemoteCallProfile(), "getRemoteCallProfile");
         }
 
         @Override
         public String getProperty(String name) {
-            return ImsCallSessionImplBase.this.getProperty(name);
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this.getProperty(name),
+                    "getProperty");
         }
 
         @Override
         public int getState() {
-            return ImsCallSessionImplBase.this.getState();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this.getState(),
+                    "getState");
         }
 
         @Override
         public boolean isInCall() {
-            return ImsCallSessionImplBase.this.isInCall();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this.isInCall(),
+                    "isInCall");
         }
 
         @Override
         public void setListener(IImsCallSessionListener listener) {
-            ImsCallSessionImplBase.this.setListener(new ImsCallSessionListener(listener));
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.setListener(
+                    new ImsCallSessionListener(listener)), "setListener");
         }
 
         @Override
         public void setMute(boolean muted) {
-            ImsCallSessionImplBase.this.setMute(muted);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.setMute(muted), "setMute");
         }
 
         @Override
         public void start(String callee, ImsCallProfile profile) {
-            ImsCallSessionImplBase.this.start(callee, profile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.start(callee, profile), "start");
         }
 
         @Override
         public void startConference(String[] participants, ImsCallProfile profile) throws
                 RemoteException {
-            ImsCallSessionImplBase.this.startConference(participants, profile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.startConference(participants,
+                    profile), "startConference");
         }
 
         @Override
         public void accept(int callType, ImsStreamMediaProfile profile) {
-            ImsCallSessionImplBase.this.accept(callType, profile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.accept(callType, profile),
+                    "accept");
         }
 
         @Override
         public void deflect(String deflectNumber) {
-            ImsCallSessionImplBase.this.deflect(deflectNumber);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.deflect(deflectNumber),
+                    "deflect");
         }
 
         @Override
         public void reject(int reason) {
-            ImsCallSessionImplBase.this.reject(reason);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.reject(reason), "reject");
         }
 
         @Override
         public void transfer(@NonNull String number, boolean isConfirmationRequired) {
-            ImsCallSessionImplBase.this.transfer(number, isConfirmationRequired);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.transfer(number,
+                    isConfirmationRequired), "transfer");
         }
 
         @Override
         public void consultativeTransfer(@NonNull IImsCallSession transferToSession) {
+            executeMethodAsync(() -> {
                 ImsCallSessionImplBase otherSession = new ImsCallSessionImplBase();
                 otherSession.setServiceImpl(transferToSession);
                 ImsCallSessionImplBase.this.transfer(otherSession);
+            }, "consultativeTransfer");
         }
 
         @Override
         public void terminate(int reason) {
-            ImsCallSessionImplBase.this.terminate(reason);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.terminate(reason), "terminate");
         }
 
         @Override
         public void hold(ImsStreamMediaProfile profile) {
-            ImsCallSessionImplBase.this.hold(profile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.hold(profile), "hold");
         }
 
         @Override
         public void resume(ImsStreamMediaProfile profile) {
-            ImsCallSessionImplBase.this.resume(profile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.resume(profile), "resume");
         }
 
         @Override
         public void merge() {
-            ImsCallSessionImplBase.this.merge();
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.merge(), "merge");
         }
 
         @Override
         public void update(int callType, ImsStreamMediaProfile profile) {
-            ImsCallSessionImplBase.this.update(callType, profile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.update(callType, profile),
+                    "update");
         }
 
         @Override
         public void extendToConference(String[] participants) {
-            ImsCallSessionImplBase.this.extendToConference(participants);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.extendToConference(participants),
+                    "extendToConference");
         }
 
         @Override
         public void inviteParticipants(String[] participants) {
-            ImsCallSessionImplBase.this.inviteParticipants(participants);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.inviteParticipants(participants),
+                    "inviteParticipants");
         }
 
         @Override
         public void removeParticipants(String[] participants) {
-            ImsCallSessionImplBase.this.removeParticipants(participants);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.removeParticipants(participants),
+                    "removeParticipants");
         }
 
         @Override
         public void sendDtmf(char c, Message result) {
-            ImsCallSessionImplBase.this.sendDtmf(c, result);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.sendDtmf(c, result), "sendDtmf");
         }
 
         @Override
         public void startDtmf(char c) {
-            ImsCallSessionImplBase.this.startDtmf(c);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.startDtmf(c), "startDtmf");
         }
 
         @Override
         public void stopDtmf() {
-            ImsCallSessionImplBase.this.stopDtmf();
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.stopDtmf(), "stopDtmf");
         }
 
         @Override
         public void sendUssd(String ussdMessage) {
-            ImsCallSessionImplBase.this.sendUssd(ussdMessage);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.sendUssd(ussdMessage), "sendUssd");
         }
 
         @Override
         public IImsVideoCallProvider getVideoCallProvider() {
-            return ImsCallSessionImplBase.this.getVideoCallProvider();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this
+                    .getVideoCallProvider(), "getVideoCallProvider");
         }
 
         @Override
         public boolean isMultiparty() {
-            return ImsCallSessionImplBase.this.isMultiparty();
+            return executeMethodAsyncForResult(() -> ImsCallSessionImplBase.this.isMultiparty(),
+                    "isMultiparty");
         }
 
         @Override
         public void sendRttModifyRequest(ImsCallProfile toProfile) {
-            ImsCallSessionImplBase.this.sendRttModifyRequest(toProfile);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.sendRttModifyRequest(toProfile),
+                    "sendRttModifyRequest");
         }
 
         @Override
         public void sendRttModifyResponse(boolean status) {
-            ImsCallSessionImplBase.this.sendRttModifyResponse(status);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.sendRttModifyResponse(status),
+                    "sendRttModifyResponse");
         }
 
         @Override
         public void sendRttMessage(String rttMessage) {
-            ImsCallSessionImplBase.this.sendRttMessage(rttMessage);
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.sendRttMessage(rttMessage),
+                    "sendRttMessage");
         }
 
         @Override
         public void sendRtpHeaderExtensions(@NonNull List<RtpHeaderExtension> extensions) {
-            ImsCallSessionImplBase.this.sendRtpHeaderExtensions(
+            executeMethodAsync(() -> ImsCallSessionImplBase.this.sendRtpHeaderExtensions(
-                    new ArraySet<RtpHeaderExtension>(extensions));
+                    new ArraySet<RtpHeaderExtension>(extensions)), "sendRtpHeaderExtensions");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(LOG_TAG, "ImsCallSessionImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResult(Supplier<T> r,
+                String errorLogName) {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(LOG_TAG, "ImsCallSessionImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                return null;
+            }
         }
     };
 
@@ -674,4 +734,14 @@ public class ImsCallSessionImplBase implements AutoCloseable {
     public void setServiceImpl(IImsCallSession serviceImpl) {
         mServiceImpl = serviceImpl;
     }
+
+    /**
+     * Set default Executor from MmTelFeature.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of ImsCallSession.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        mExecutor = executor;
+    }
 }

telephony/java/android/telephony/ims/stub/ImsConfigImplBase.java

@@ -33,12 +33,21 @@ import android.util.Log;
 import com.android.ims.ImsConfig;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.telephony.util.RemoteCallbackListExt;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.ref.WeakReference;
 import java.util.Arrays;
 import java.util.HashMap;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Supplier;
+
 
 /**
  * Controls the modification of IMS specific configurations. For more information on the supported
@@ -81,21 +90,48 @@ public class ImsConfigImplBase {
         WeakReference<ImsConfigImplBase> mImsConfigImplBaseWeakReference;
         private HashMap<Integer, Integer> mProvisionedIntValue = new HashMap<>();
         private HashMap<Integer, String> mProvisionedStringValue = new HashMap<>();
+        private final Object mLock = new Object();
+        private Executor mExecutor;
 
         @VisibleForTesting
-        public ImsConfigStub(ImsConfigImplBase imsConfigImplBase) {
+        public ImsConfigStub(ImsConfigImplBase imsConfigImplBase, Executor executor) {
+            mExecutor = executor;
             mImsConfigImplBaseWeakReference =
                     new WeakReference<ImsConfigImplBase>(imsConfigImplBase);
         }
 
         @Override
         public void addImsConfigCallback(IImsConfigCallback c) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().addImsConfigCallback(c);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "addImsConfigCallback");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception addImsConfigCallback");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void removeImsConfigCallback(IImsConfigCallback c) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().removeImsConfigCallback(c);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "removeImsConfigCallback");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception removeImsConfigCallback");
+                throw exceptionRef.get();
+            }
         }
 
         /**
@@ -108,17 +144,35 @@ public class ImsConfigImplBase {
          * unavailable.
          */
         @Override
-        public synchronized int getConfigInt(int item) throws RemoteException {
+        public int getConfigInt(int item) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            int retVal = executeMethodAsyncForResult(()-> {
+                int returnVal = ImsConfig.OperationStatusConstants.UNKNOWN;
+                synchronized (mLock) {
                     if (mProvisionedIntValue.containsKey(item)) {
                         return mProvisionedIntValue.get(item);
                     } else {
-                int retVal = getImsConfigImpl().getConfigInt(item);
+                        try {
-                if (retVal != ImsConfig.OperationStatusConstants.UNKNOWN) {
+                            returnVal = getImsConfigImpl().getConfigInt(item);
-                    updateCachedValue(item, retVal, false);
+                            if (returnVal != ImsConfig.OperationStatusConstants.UNKNOWN) {
+                                mProvisionedIntValue.put(item, returnVal);
                             }
+                        } catch (RemoteException e) {
+                            exceptionRef.set(e);
+                            return returnVal;
+                        }
+                    }
+                }
+                return returnVal;
+            }, "getConfigInt");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception getConfigString");
+                throw exceptionRef.get();
+            }
+
             return retVal;
         }
-        }
 
         /**
          * Gets the value for ims service/capabilities parameters. It first checks its local cache,
@@ -129,17 +183,35 @@ public class ImsConfigImplBase {
          * @return value in String format.
          */
         @Override
-        public synchronized String getConfigString(int item) throws RemoteException {
+        public String getConfigString(int item) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            String retVal = executeMethodAsyncForResult(()-> {
+                String returnVal = null;
+                synchronized (mLock) {
                     if (mProvisionedStringValue.containsKey(item)) {
-                return mProvisionedStringValue.get(item);
+                        returnVal = mProvisionedStringValue.get(item);
                     } else {
-                String retVal = getImsConfigImpl().getConfigString(item);
+                        try {
-                if (retVal != null) {
+                            returnVal = getImsConfigImpl().getConfigString(item);
-                    updateCachedValue(item, retVal, false);
+                            if (returnVal != null) {
+                                mProvisionedStringValue.put(item, returnVal);
                             }
+                        } catch (RemoteException e) {
+                            exceptionRef.set(e);
+                            return returnVal;
+                        }
+                    }
+                }
+                return returnVal;
+            }, "getConfigString");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception getConfigString");
+                throw exceptionRef.get();
+            }
+
             return retVal;
         }
-        }
 
         /**
          * Sets the value for IMS service/capabilities parameters by the operator device
@@ -153,14 +225,32 @@ public class ImsConfigImplBase {
          * {@link #CONFIG_RESULT_FAILED} or {@link #CONFIG_RESULT_SUCCESS}.
          */
         @Override
-        public synchronized int setConfigInt(int item, int value) throws RemoteException {
+        public int setConfigInt(int item, int value) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            int retVal = executeMethodAsyncForResult(()-> {
+                int returnVal = ImsConfig.OperationStatusConstants.UNKNOWN;
+                try {
+                    synchronized (mLock) {
                         mProvisionedIntValue.remove(item);
-            int retVal = getImsConfigImpl().setConfig(item, value);
+                        returnVal = getImsConfigImpl().setConfig(item, value);
-            if (retVal == ImsConfig.OperationStatusConstants.SUCCESS) {
+                        if (returnVal == ImsConfig.OperationStatusConstants.SUCCESS) {
-                updateCachedValue(item, value, true);
+                            mProvisionedIntValue.put(item, value);
                         } else {
-                Log.d(TAG, "Set provision value of " + item +
+                            Log.d(TAG, "Set provision value of " + item
-                        " to " + value + " failed with error code " + retVal);
+                                    + " to " + value + " failed with error code " + returnVal);
+                        }
+                    }
+                    notifyImsConfigChanged(item, value);
+                    return returnVal;
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                    return returnVal;
+                }
+            }, "setConfigInt");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception setConfigInt");
+                throw exceptionRef.get();
             }
 
             return retVal;
@@ -178,12 +268,30 @@ public class ImsConfigImplBase {
          * {@link #CONFIG_RESULT_FAILED} or {@link #CONFIG_RESULT_SUCCESS}.
          */
         @Override
-        public synchronized int setConfigString(int item, String value)
+        public int setConfigString(int item, String value)
                 throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            int retVal = executeMethodAsyncForResult(()-> {
+                int returnVal = ImsConfig.OperationStatusConstants.UNKNOWN;
+                try {
+                    synchronized (mLock) {
                         mProvisionedStringValue.remove(item);
-            int retVal = getImsConfigImpl().setConfig(item, value);
+                        returnVal = getImsConfigImpl().setConfig(item, value);
-            if (retVal == ImsConfig.OperationStatusConstants.SUCCESS) {
+                        if (returnVal == ImsConfig.OperationStatusConstants.SUCCESS) {
-                updateCachedValue(item, value, true);
+                            mProvisionedStringValue.put(item, value);
+                        }
+                    }
+                    notifyImsConfigChanged(item, value);
+                    return returnVal;
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                    return returnVal;
+                }
+            }, "setConfigString");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception setConfigInt");
+                throw exceptionRef.get();
             }
 
             return retVal;
@@ -191,7 +299,19 @@ public class ImsConfigImplBase {
 
         @Override
         public void updateImsCarrierConfigs(PersistableBundle bundle) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().updateImsCarrierConfigs(bundle);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "updateImsCarrierConfigs");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception updateImsCarrierConfigs");
+                throw exceptionRef.get();
+            }
         }
 
         private ImsConfigImplBase getImsConfigImpl() throws RemoteException {
@@ -206,13 +326,37 @@ public class ImsConfigImplBase {
         @Override
         public void notifyRcsAutoConfigurationReceived(byte[] config, boolean isCompressed)
                 throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().onNotifyRcsAutoConfigurationReceived(config, isCompressed);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "notifyRcsAutoConfigurationReceived");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception notifyRcsAutoConfigurationReceived");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void notifyRcsAutoConfigurationRemoved()
                 throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().onNotifyRcsAutoConfigurationRemoved();
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "notifyRcsAutoConfigurationRemoved");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception notifyRcsAutoConfigurationRemoved");
+                throw exceptionRef.get();
+            }
         }
 
         private void notifyImsConfigChanged(int item, int value) throws RemoteException {
@@ -223,50 +367,144 @@ public class ImsConfigImplBase {
             getImsConfigImpl().notifyConfigChanged(item, value);
         }
 
-        protected synchronized void updateCachedValue(int item, int value, boolean notifyChange)
+        protected void updateCachedValue(int item, int value) {
-        throws RemoteException {
+            synchronized (mLock) {
                 mProvisionedIntValue.put(item, value);
-            if (notifyChange) {
-                notifyImsConfigChanged(item, value);
             }
         }
 
-        protected synchronized void updateCachedValue(int item, String value,
+        protected void updateCachedValue(int item, String value) {
-                boolean notifyChange) throws RemoteException {
+            synchronized (mLock) {
                 mProvisionedStringValue.put(item, value);
-            if (notifyChange) {
-                notifyImsConfigChanged(item, value);
             }
         }
 
         @Override
         public void addRcsConfigCallback(IRcsConfigCallback c) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().addRcsConfigCallback(c);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "addRcsConfigCallback");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception addRcsConfigCallback");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void removeRcsConfigCallback(IRcsConfigCallback c) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().removeRcsConfigCallback(c);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "removeRcsConfigCallback");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception removeRcsConfigCallback");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void triggerRcsReconfiguration() throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().triggerAutoConfiguration();
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "triggerRcsReconfiguration");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception triggerRcsReconfiguration");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void setRcsClientConfiguration(RcsClientConfiguration rcc) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     getImsConfigImpl().setRcsClientConfiguration(rcc);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "setRcsClientConfiguration");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception setRcsClientConfiguration");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void notifyIntImsConfigChanged(int item, int value) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     notifyImsConfigChanged(item, value);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "notifyIntImsConfigChanged");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception notifyIntImsConfigChanged");
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void notifyStringImsConfigChanged(int item, String value) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(()-> {
+                try {
                     notifyImsConfigChanged(item, value);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "notifyStringImsConfigChanged");
+
+            if (exceptionRef.get() != null) {
+                Log.d(TAG, "ImsConfigImplBase Exception notifyStringImsConfigChanged");
+                throw exceptionRef.get();
+            }
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) throws RemoteException {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(TAG, "ImsConfigImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResult(Supplier<T> r,
+                String errorLogName) throws RemoteException {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(TAG, "ImsConfigImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
         }
     }
 
@@ -303,15 +541,24 @@ public class ImsConfigImplBase {
     ImsConfigStub mImsConfigStub;
 
     /**
-     * Used for compatibility between older versions of the ImsService.
+     * Create a ImsConfig using the Executor specified for methods being called by the
+     * framework.
+     * @param executor The executor for the framework to use when executing the methods overridden
+     * by the implementation of ImsConfig.
+     */
+    public ImsConfigImplBase(@NonNull Executor executor) {
+        mImsConfigStub = new ImsConfigStub(this, executor);
+    }
+
+    /**
      * @hide
      */
-    public ImsConfigImplBase(Context context) {
+    public ImsConfigImplBase(@NonNull Context context) {
-        mImsConfigStub = new ImsConfigStub(this);
+        mImsConfigStub = new ImsConfigStub(this, null);
     }
 
     public ImsConfigImplBase() {
-        mImsConfigStub = new ImsConfigStub(this);
+        mImsConfigStub = new ImsConfigStub(this, null);
     }
 
     /**
@@ -427,8 +674,10 @@ public class ImsConfigImplBase {
      * @param value in Integer format.
      */
     public final void notifyProvisionedValueChanged(int item, int value) {
+        mImsConfigStub.updateCachedValue(item, value);
+
         try {
-            mImsConfigStub.updateCachedValue(item, value, true);
+            mImsConfigStub.notifyImsConfigChanged(item, value);
         } catch (RemoteException e) {
             Log.w(TAG, "notifyProvisionedValueChanged(int): Framework connection is dead.");
         }
@@ -443,8 +692,10 @@ public class ImsConfigImplBase {
      * @param value in String format.
      */
     public final void notifyProvisionedValueChanged(int item, String value) {
+        mImsConfigStub.updateCachedValue(item, value);
+
         try {
-        mImsConfigStub.updateCachedValue(item, value, true);
+            mImsConfigStub.notifyImsConfigChanged(item, value);
         } catch (RemoteException e) {
             Log.w(TAG, "notifyProvisionedValueChanged(string): Framework connection is dead.");
         }
@@ -582,4 +833,16 @@ public class ImsConfigImplBase {
             }
         });
     }
+
+    /**
+     * Set default Executor from ImsService.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of ImsConfig.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        if (mImsConfigStub.mExecutor == null) {
+            mImsConfigStub.mExecutor = executor;
+        }
+    }
 }

telephony/java/android/telephony/ims/stub/ImsEcbmImplBase.java

@@ -16,14 +16,21 @@
 
 package android.telephony.ims.stub;
 
+import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.os.RemoteException;
 import android.util.Log;
 
 import com.android.ims.internal.IImsEcbm;
 import com.android.ims.internal.IImsEcbmListener;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.util.Objects;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.Executor;
+
 
 /**
  * Base implementation of ImsEcbm, which implements stub versions of the methods
@@ -40,10 +47,12 @@ public class ImsEcbmImplBase {
 
     private final Object mLock = new Object();
     private IImsEcbmListener mListener;
+    private Executor mExecutor = Runnable::run;
+
     private final IImsEcbm mImsEcbm = new IImsEcbm.Stub() {
         @Override
         public void setListener(IImsEcbmListener listener) {
-            synchronized (mLock) {
+            executeMethodAsync(() -> {
                 if (mListener != null && !mListener.asBinder().isBinderAlive()) {
                     Log.w(TAG, "setListener: discarding dead Binder");
                     mListener = null;
@@ -62,12 +71,25 @@ public class ImsEcbmImplBase {
                             + "listener");
                     mListener = listener;
                 }
-            }
+            }, "setListener");
         }
 
         @Override
         public void exitEmergencyCallbackMode() {
-            ImsEcbmImplBase.this.exitEmergencyCallbackMode();
+            executeMethodAsync(() -> ImsEcbmImplBase.this.exitEmergencyCallbackMode(),
+                    "exitEmergencyCallbackMode");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(TAG, "ImsEcbmImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+            }
         }
     };
 
@@ -123,4 +145,14 @@ public class ImsEcbmImplBase {
             }
         }
     }
+
+    /**
+     * Set default Executor from MmTelFeature.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of ImsEcbm.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        mExecutor = executor;
+    }
 }

telephony/java/android/telephony/ims/stub/ImsMultiEndpointImplBase.java

@@ -16,6 +16,7 @@
 
 package android.telephony.ims.stub;
 
+import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.os.RemoteException;
 import android.telephony.ims.ImsExternalCallState;
@@ -23,9 +24,14 @@ import android.util.Log;
 
 import com.android.ims.internal.IImsExternalCallStateListener;
 import com.android.ims.internal.IImsMultiEndpoint;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.util.List;
 import java.util.Objects;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.Executor;
 
 /**
  * Base implementation of ImsMultiEndpoint, which implements stub versions of the methods
@@ -43,11 +49,13 @@ public class ImsMultiEndpointImplBase {
 
     private IImsExternalCallStateListener mListener;
     private final Object mLock = new Object();
+    private Executor mExecutor = Runnable::run;
+
     private final IImsMultiEndpoint mImsMultiEndpoint = new IImsMultiEndpoint.Stub() {
 
         @Override
         public void setListener(IImsExternalCallStateListener listener) throws RemoteException {
-            synchronized (mLock) {
+            executeMethodAsync(() -> {
                 if (mListener != null && !mListener.asBinder().isBinderAlive()) {
                     Log.w(TAG, "setListener: discarding dead Binder");
                     mListener = null;
@@ -67,12 +75,25 @@ public class ImsMultiEndpointImplBase {
                             + "listener");
                     mListener = listener;
                 }
-            }
+            }, "setListener");
         }
 
         @Override
         public void requestImsExternalCallStateInfo() throws RemoteException {
-            ImsMultiEndpointImplBase.this.requestImsExternalCallStateInfo();
+            executeMethodAsync(() -> ImsMultiEndpointImplBase.this
+                    .requestImsExternalCallStateInfo(), "requestImsExternalCallStateInfo");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(TAG, "ImsMultiEndpointImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+            }
         }
     };
 
@@ -108,4 +129,14 @@ public class ImsMultiEndpointImplBase {
     public void requestImsExternalCallStateInfo() {
         Log.d(TAG, "requestImsExternalCallStateInfo() not implemented");
     }
+
+    /**
+     * Set default Executor from MmTelFeature.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of ImsMultiEndpoint.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        mExecutor = executor;
+    }
 }

telephony/java/android/telephony/ims/stub/ImsRegistrationImplBase.java

@@ -31,10 +31,19 @@ import android.telephony.ims.aidl.IImsRegistrationCallback;
 import android.util.Log;
 
 import com.android.internal.telephony.util.RemoteCallbackListExt;
+import com.android.internal.telephony.util.TelephonyUtils;
 import com.android.internal.util.ArrayUtils;
 
+
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Supplier;
 
 /**
  * Controls IMS registration for this ImsService and notifies the framework when the IMS
@@ -92,39 +101,114 @@ public class ImsRegistrationImplBase {
     // yet.
     private static final int REGISTRATION_STATE_UNKNOWN = -1;
 
+    private Executor mExecutor;
+
+    /**
+     * Create a new ImsRegistration.
+     * <p>
+     * Method stubs called from the framework will be called asynchronously. To specify the
+     * {@link Executor} that the methods stubs will be called, use
+     * {@link ImsRegistrationImplBase#ImsRegistrationImplBase(Executor)} instead.
+     */
+    public ImsRegistrationImplBase() {
+        super();
+    }
+
+    /**
+     * Create a ImsRegistration using the Executor specified for methods being called by the
+     * framework.
+     * @param executor The executor for the framework to use when executing the methods overridden
+     * by the implementation of ImsRegistration.
+     */
+    public ImsRegistrationImplBase(@NonNull Executor executor) {
+        super();
+        mExecutor = executor;
+    }
+
     private final IImsRegistration mBinder = new IImsRegistration.Stub() {
 
         @Override
         public @ImsRegistrationTech int getRegistrationTechnology() throws RemoteException {
-            synchronized (mLock) {
+            return executeMethodAsyncForResult(() -> (mRegistrationAttributes == null)
-                return (mRegistrationAttributes == null) ? REGISTRATION_TECH_NONE
+                    ? REGISTRATION_TECH_NONE : mRegistrationAttributes.getRegistrationTechnology(),
-                        : mRegistrationAttributes.getRegistrationTechnology();
+                    "getRegistrationTechnology");
-            }
         }
 
         @Override
         public void addRegistrationCallback(IImsRegistrationCallback c) throws RemoteException {
+            AtomicReference<RemoteException> exceptionRef = new AtomicReference<>();
+            executeMethodAsync(() -> {
+                try {
                     ImsRegistrationImplBase.this.addRegistrationCallback(c);
+                } catch (RemoteException e) {
+                    exceptionRef.set(e);
+                }
+            }, "addRegistrationCallback");
+
+            if (exceptionRef.get() != null) {
+                throw exceptionRef.get();
+            }
         }
 
         @Override
         public void removeRegistrationCallback(IImsRegistrationCallback c) throws RemoteException {
-            ImsRegistrationImplBase.this.removeRegistrationCallback(c);
+            executeMethodAsync(() -> ImsRegistrationImplBase.this.removeRegistrationCallback(c),
+                    "removeRegistrationCallback");
         }
 
         @Override
         public void triggerFullNetworkRegistration(int sipCode, String sipReason) {
-            ImsRegistrationImplBase.this.triggerFullNetworkRegistration(sipCode, sipReason);
+            executeMethodAsyncNoException(() -> ImsRegistrationImplBase.this
+                    .triggerFullNetworkRegistration(sipCode, sipReason),
+                    "triggerFullNetworkRegistration");
         }
 
         @Override
         public void triggerUpdateSipDelegateRegistration() {
-            ImsRegistrationImplBase.this.updateSipDelegateRegistration();
+            executeMethodAsyncNoException(() -> ImsRegistrationImplBase.this
+                    .updateSipDelegateRegistration(), "triggerUpdateSipDelegateRegistration");
         }
 
         @Override
         public void triggerSipDelegateDeregistration() {
-            ImsRegistrationImplBase.this.triggerSipDelegateDeregistration();
+            executeMethodAsyncNoException(() -> ImsRegistrationImplBase.this
+                    .triggerSipDelegateDeregistration(), "triggerSipDelegateDeregistration");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) throws RemoteException {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(LOG_TAG, "ImsRegistrationImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
+        }
+
+        private void executeMethodAsyncNoException(Runnable r, String errorLogName) {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(LOG_TAG, "ImsRegistrationImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResult(Supplier<T> r,
+                String errorLogName) throws RemoteException {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(LOG_TAG, "ImsRegistrationImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
         }
     };
 
@@ -394,4 +478,16 @@ public class ImsRegistrationImplBase {
             onSubscriberAssociatedUriChanged(c, uris);
         }
     }
+
+    /**
+     * Set default Executor from ImsService.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of Registration.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        if (mExecutor == null) {
+            mExecutor = executor;
+        }
+    }
 }

telephony/java/android/telephony/ims/stub/ImsUtImplBase.java

@@ -27,10 +27,17 @@ import android.util.Log;
 
 import com.android.ims.internal.IImsUt;
 import com.android.ims.internal.IImsUtListener;
+import com.android.internal.telephony.util.TelephonyUtils;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.Objects;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
+import java.util.function.Supplier;
 
 /**
  * Base implementation of IMS UT interface, which implements stubs. Override these methods to
@@ -119,96 +126,108 @@ public class ImsUtImplBase {
      */
     public static final int INVALID_RESULT = -1;
 
+    private Executor mExecutor = Runnable::run;
+
     private final IImsUt.Stub mServiceImpl = new IImsUt.Stub() {
         private final Object mLock = new Object();
         private ImsUtListener mUtListener;
 
         @Override
         public void close() throws RemoteException {
-            ImsUtImplBase.this.close();
+            executeMethodAsync(() ->ImsUtImplBase.this.close(), "close");
         }
 
         @Override
         public int queryCallBarring(int cbType) throws RemoteException {
-            return ImsUtImplBase.this.queryCallBarring(cbType);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCallBarring(cbType),
+                    "queryCallBarring");
         }
 
         @Override
         public int queryCallForward(int condition, String number) throws RemoteException {
-            return ImsUtImplBase.this.queryCallForward(condition, number);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCallForward(
+                    condition, number), "queryCallForward");
         }
 
         @Override
         public int queryCallWaiting() throws RemoteException {
-            return ImsUtImplBase.this.queryCallWaiting();
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCallWaiting(),
+                    "queryCallWaiting");
         }
 
         @Override
         public int queryCLIR() throws RemoteException {
-            return ImsUtImplBase.this.queryCLIR();
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCLIR(), "queryCLIR");
         }
 
         @Override
         public int queryCLIP() throws RemoteException {
-            return ImsUtImplBase.this.queryCLIP();
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCLIP(), "queryCLIP");
         }
 
         @Override
         public int queryCOLR() throws RemoteException {
-            return ImsUtImplBase.this.queryCOLR();
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCOLR(), "queryCOLR");
         }
 
         @Override
         public int queryCOLP() throws RemoteException {
-            return ImsUtImplBase.this.queryCOLP();
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.queryCOLP(), "queryCOLP");
         }
 
         @Override
         public int transact(Bundle ssInfo) throws RemoteException {
-            return ImsUtImplBase.this.transact(ssInfo);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.transact(ssInfo),
+                    "transact");
         }
 
         @Override
         public int updateCallBarring(int cbType, int action, String[] barrList) throws
                 RemoteException {
-            return ImsUtImplBase.this.updateCallBarring(cbType, action, barrList);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCallBarring(
+                    cbType, action, barrList), "updateCallBarring");
         }
 
         @Override
         public int updateCallForward(int action, int condition, String number, int serviceClass,
                 int timeSeconds) throws RemoteException {
-            return ImsUtImplBase.this.updateCallForward(action, condition, number, serviceClass,
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCallForward(
-                    timeSeconds);
+                    action, condition, number, serviceClass, timeSeconds), "updateCallForward");
         }
 
         @Override
         public int updateCallWaiting(boolean enable, int serviceClass) throws RemoteException {
-            return ImsUtImplBase.this.updateCallWaiting(enable, serviceClass);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCallWaiting(
+                    enable, serviceClass), "updateCallWaiting");
         }
 
         @Override
         public int updateCLIR(int clirMode) throws RemoteException {
-            return ImsUtImplBase.this.updateCLIR(clirMode);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCLIR(clirMode),
+                    "updateCLIR");
         }
 
         @Override
         public int updateCLIP(boolean enable) throws RemoteException {
-            return ImsUtImplBase.this.updateCLIP(enable);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCLIP(enable),
+                    "updateCLIP");
         }
 
         @Override
         public int updateCOLR(int presentation) throws RemoteException {
-            return ImsUtImplBase.this.updateCOLR(presentation);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCOLR(presentation),
+                    "updateCOLR");
         }
 
         @Override
         public int updateCOLP(boolean enable) throws RemoteException {
-            return ImsUtImplBase.this.updateCOLP(enable);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this.updateCOLP(enable),
+                    "updateCOLP");
         }
 
         @Override
         public void setListener(IImsUtListener listener) throws RemoteException {
-            synchronized (mLock) {
+            executeMethodAsync(() -> {
                 if (mUtListener != null
                         && !mUtListener.getListenerInterface().asBinder().isBinderAlive()) {
                     Log.w(TAG, "setListener: discarding dead Binder");
@@ -229,29 +248,59 @@ public class ImsUtImplBase {
                             + "listener");
                     mUtListener = new ImsUtListener(listener);
                 }
-            }
 
                 ImsUtImplBase.this.setListener(mUtListener);
+            }, "setListener");
         }
 
         @Override
         public int queryCallBarringForServiceClass(int cbType, int serviceClass)
                 throws RemoteException {
-            return ImsUtImplBase.this.queryCallBarringForServiceClass(cbType, serviceClass);
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this
+                    .queryCallBarringForServiceClass(cbType, serviceClass),
+                    "queryCallBarringForServiceClass");
         }
 
         @Override
         public int updateCallBarringForServiceClass(int cbType, int action,
                 String[] barrList, int serviceClass) throws RemoteException {
-            return ImsUtImplBase.this.updateCallBarringForServiceClass(
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this
-                    cbType, action, barrList, serviceClass);
+                    .updateCallBarringForServiceClass(cbType, action, barrList, serviceClass),
+                    "updateCallBarringForServiceClass");
         }
 
         @Override
         public int updateCallBarringWithPassword(int cbType, int action, String[] barrList,
                 int serviceClass, String password) throws RemoteException {
-            return ImsUtImplBase.this.updateCallBarringWithPassword(
+            return executeMethodAsyncForResult(() -> ImsUtImplBase.this
-                    cbType, action, barrList, serviceClass, password);
+                    .updateCallBarringWithPassword(cbType, action, barrList, serviceClass,
+                    password), "updateCallBarringWithPassword");
+        }
+
+        // Call the methods with a clean calling identity on the executor and wait indefinitely for
+        // the future to return.
+        private void executeMethodAsync(Runnable r, String errorLogName) throws RemoteException {
+            try {
+                CompletableFuture.runAsync(
+                        () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor).join();
+            } catch (CancellationException | CompletionException e) {
+                Log.w(TAG, "ImsUtImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
+        }
+
+        private <T> T executeMethodAsyncForResult(Supplier<T> r,
+                String errorLogName) throws RemoteException {
+            CompletableFuture<T> future = CompletableFuture.supplyAsync(
+                    () -> TelephonyUtils.runWithCleanCallingIdentity(r), mExecutor);
+            try {
+                return future.get();
+            } catch (ExecutionException | InterruptedException e) {
+                Log.w(TAG, "ImsUtImplBase Binder - " + errorLogName + " exception: "
+                        + e.getMessage());
+                throw new RemoteException(e.getMessage());
+            }
         }
     };
 
@@ -470,4 +519,14 @@ public class ImsUtImplBase {
     public IImsUt getInterface() {
         return mServiceImpl;
     }
+
+    /**
+     * Set default Executor from MmTelFeature.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of ImsUT.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        mExecutor = executor;
+    }
 }

telephony/java/android/telephony/ims/stub/SipTransportImplBase.java

@@ -86,9 +86,20 @@ public class SipTransportImplBase {
         }
     };
 
-    private final Executor mBinderExecutor;
+    private Executor mBinderExecutor;
     private final ArrayList<SipDelegateAidlWrapper> mDelegates = new ArrayList<>();
 
+    /**
+     * Create a new SipTransport.
+     * <p>
+     * Method stubs called from the framework will be called asynchronously. To specify the
+     * {@link Executor} that the methods stubs will be called, use
+     * {@link SipTransportImplBase#SipTransportImplBase(Executor)} instead.
+     */
+    public SipTransportImplBase() {
+        super();
+    }
+
     /**
      * Create an implementation of SipTransportImplBase.
      *
@@ -212,4 +223,16 @@ public class SipTransportImplBase {
     public ISipTransport getBinder() {
         return mSipTransportImpl;
     }
+
+    /**
+     * Set default Executor from ImsService.
+     * @param executor The default executor for the framework to use when executing the methods
+     * overridden by the implementation of SipTransport.
+     * @hide
+     */
+    public final void setDefaultExecutor(@NonNull Executor executor) {
+        if (mBinderExecutor == null) {
+            mBinderExecutor = executor;
+        }
+    }
 }