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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.car.procfsinspector;
     17 
     18 import android.annotation.Nullable;
     19 import android.os.RemoteException;
     20 import android.os.ServiceManager;
     21 import android.util.Log;
     22 import java.util.Arrays;
     23 import java.util.Collections;
     24 import java.util.List;
     25 import java.util.Objects;
     26 
     27 public final class ProcfsInspector {
     28     private static final String TAG = "car.procfsinspector";
     29     private static final String SERVICE_NAME = "com.android.car.procfsinspector";
     30     private final IProcfsInspector mService;
     31 
     32     private ProcfsInspector(IProcfsInspector service) {
     33         mService = service;
     34     }
     35 
     36     @Nullable
     37     private static IProcfsInspector tryGet() {
     38         return IProcfsInspector.Stub.asInterface(
     39             ServiceManager.getService(SERVICE_NAME));
     40     }
     41 
     42     public static List<ProcessInfo> readProcessTable() {
     43         IProcfsInspector procfsInspector = tryGet();
     44         if (procfsInspector != null) {
     45             try {
     46                 return procfsInspector.readProcessTable();
     47             } catch (RemoteException e) {
     48                 Log.w(TAG, "caught RemoteException", e);
     49             }
     50         }
     51 
     52         return Collections.emptyList();
     53     }
     54 }
     55