| /* |
| * Copyright (C) 2019 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 com.android.commands.svc; |
| |
| import android.app.ActivityManager; |
| import android.os.ParcelFileDescriptor; |
| |
| import java.io.FileInputStream; |
| |
| public class SystemServerCommand extends Svc.Command { |
| public SystemServerCommand() { |
| super("system-server"); |
| } |
| |
| @Override |
| public String shortHelp() { |
| return "System server process related command"; |
| } |
| |
| @Override |
| public String longHelp() { |
| return shortHelp() + "\n" |
| + "\n" |
| + "usage: system-server wait-for-crash\n" |
| + " Wait until the system server process crashes.\n\n"; |
| } |
| |
| private void waitForCrash() throws Exception { |
| ParcelFileDescriptor fd = ActivityManager.getService().getLifeMonitor(); |
| if (fd == null) { |
| System.err.println("Unable to get life monitor."); |
| return; |
| } |
| System.out.println("Waiting for the system server process to die..."); |
| new FileInputStream(fd.getFileDescriptor()).read(); |
| } |
| |
| @Override |
| public void run(String[] args) { |
| try { |
| if (args.length > 1) { |
| switch (args[1]) { |
| case "wait-for-crash": |
| waitForCrash(); |
| return; |
| } |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| System.err.println(longHelp()); |
| } |
| } |