content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.os;
  
  import android.annotation.SystemApi;
  import android.annotation.TestApi;
  
  /** @hide */
  @SystemApi
  @TestApi
  public interface IHwBinder {
      /**
       * Process a hwbinder transaction.
       *
       * @param code interface specific code for interface.
       * @param request parceled transaction
       * @param reply object to parcel reply into
       * @param flags transaction flags to be chosen by wire protocol
       */
      public void transact(
              int code, HwParcel request, HwParcel reply, int flags)
          throws RemoteException;
  
      /**
       * Return as IHwInterface instance only if this implements descriptor.
       *
       * @param descriptor for example foo.bar@1.0::IBaz
       */
      public IHwInterface queryLocalInterface(String descriptor);
  
      /**
       * Interface for receiving a callback when the process hosting a service
       * has gone away.
       */
      public interface DeathRecipient {
          /**
           * Callback for a registered process dying.
           *
           * @param cookie cookie this death recipient was registered with.
           */
          public void serviceDied(long cookie);
      }
  
      /**
       * Notifies the death recipient with the cookie when the process containing
       * this binder dies.
       *
       * @param recipient callback object to be called on object death.
       * @param cookie value to be given to callback on object death.
       */
      public boolean linkToDeath(DeathRecipient recipient, long cookie);
      /**
       * Unregisters the death recipient from this binder.
       *
       * @param recipient callback to no longer recieve death notifications on this binder.
       */
      public boolean unlinkToDeath(DeathRecipient recipient);
  }
  