1 /* 2 * Copyright (C) 2019 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 17 package com.android.settings.development; 18 19 import android.app.ActivityManager; 20 import android.content.Context; 21 import android.os.Build; 22 import android.os.Handler; 23 import android.os.Looper; 24 import android.os.RemoteException; 25 import android.os.UserManager; 26 import android.util.Log; 27 import android.widget.Toast; 28 29 import androidx.preference.Preference; 30 31 import com.android.settings.R; 32 import com.android.settings.core.PreferenceControllerMixin; 33 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 34 35 public class SystemServerHeapDumpPreferenceController extends DeveloperOptionsPreferenceController 36 implements PreferenceControllerMixin { 37 38 private static final String KEY_SYSTEM_SERVER_HEAP_DUMP = "system_server_heap_dump"; 39 40 /** How long to keep the preference disabled before re-enabling. */ 41 private static final long ENABLE_TIMEOUT_MILLIS = 5000L; 42 43 private final UserManager mUserManager; 44 45 private Handler mHandler; 46 SystemServerHeapDumpPreferenceController(Context context)47 public SystemServerHeapDumpPreferenceController(Context context) { 48 super(context); 49 50 mUserManager = context.getSystemService(UserManager.class); 51 mHandler = new Handler(Looper.getMainLooper()); 52 } 53 54 @Override isAvailable()55 public boolean isAvailable() { 56 return Build.IS_DEBUGGABLE 57 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES); 58 } 59 60 @Override getPreferenceKey()61 public String getPreferenceKey() { 62 return KEY_SYSTEM_SERVER_HEAP_DUMP; 63 } 64 65 @Override handlePreferenceTreeClick(Preference preference)66 public boolean handlePreferenceTreeClick(Preference preference) { 67 if (!KEY_SYSTEM_SERVER_HEAP_DUMP.equals(preference.getKey())) { 68 return false; 69 } 70 try { 71 // Temporarily disable the preference so the user doesn't start two dumps in a row. 72 preference.setEnabled(false); 73 Toast.makeText(mContext, R.string.capturing_system_heap_dump_message, 74 Toast.LENGTH_SHORT).show(); 75 ActivityManager.getService().requestSystemServerHeapDump(); 76 mHandler.postDelayed(() -> preference.setEnabled(true), ENABLE_TIMEOUT_MILLIS); 77 return true; 78 } catch (RemoteException e) { 79 Log.e(TAG, "error taking system heap dump", e); 80 Toast.makeText(mContext, R.string.error_capturing_system_heap_dump_message, 81 Toast.LENGTH_SHORT).show(); 82 } 83 return false; 84 } 85 } 86