19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage com.android.server.am; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19ec7ed14c183a2ab958817694bad53bdc8b05e49erpcraigimport android.os.SELinux; 208a9b22056b13477f59df934928c00c58b5871c95Joe Onoratoimport android.util.Slog; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.*; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.Arrays; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Monitors device resources periodically for some period of time. Useful for 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * tracking down performance problems. 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass DeviceMonitor { 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String LOG_TAG = DeviceMonitor.class.getName(); 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Number of samples to take. */ 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int SAMPLE_COUNT = 10; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Time to wait in ms between samples. */ 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int INTERVAL = 1000; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Time to wait in ms between samples. */ 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int MAX_FILES = 30; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final byte[] buffer = new byte[1024]; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Is the monitor currently running? */ 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean running = false; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private DeviceMonitor() { 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new Thread() { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project monitor(); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }.start(); 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Loops continuously. Pauses until someone tells us to start monitoring. 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @SuppressWarnings("InfiniteLoopStatement") 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void monitor() { 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (true) { 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project waitForStart(); 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project purge(); 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < SAMPLE_COUNT; i++) { 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dump(); 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException e) { 698a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(LOG_TAG, "Dump failed.", e); 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pause(); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project stop(); 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final File PROC = new File("/proc"); 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final File BASE = new File("/data/anr/"); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static { 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!BASE.isDirectory() && !BASE.mkdirs()) { 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new AssertionError("Couldn't create " + BASE + "."); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 84ec7ed14c183a2ab958817694bad53bdc8b05e49erpcraig if (!SELinux.restorecon(BASE)) { 85ec7ed14c183a2ab958817694bad53bdc8b05e49erpcraig throw new AssertionError("Couldn't restorecon " + BASE + "."); 86ec7ed14c183a2ab958817694bad53bdc8b05e49erpcraig } 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final File[] PATHS = { 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new File(PROC, "zoneinfo"), 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new File(PROC, "interrupts"), 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new File(PROC, "meminfo"), 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new File(PROC, "slabinfo"), 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Deletes old files. 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void purge() { 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project File[] files = BASE.listFiles(); 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = files.length - MAX_FILES; 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Arrays.sort(files); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!files[i].delete()) { 1078a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(LOG_TAG, "Couldn't delete " + files[i] + "."); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Dumps the current device stats to a new file. 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void dump() throws IOException { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project OutputStream out = new FileOutputStream( 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new File(BASE, String.valueOf(System.currentTimeMillis()))); 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Copy /proc/*/stat 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (File processDirectory : PROC.listFiles()) { 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isProcessDirectory(processDirectory)) { 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dump(new File(processDirectory, "stat"), out); 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Copy other files. 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (File file : PATHS) { 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dump(file, out); 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closeQuietly(out); 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns true if the given file represents a process directory. 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static boolean isProcessDirectory(File file) { 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Integer.parseInt(file.getName()); 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return file.isDirectory(); 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (NumberFormatException e) { 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copies from a file to an output stream. 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void dump(File from, OutputStream out) throws IOException { 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project writeHeader(from, out); 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FileInputStream in = null; 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project in = new FileInputStream(from); 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count; 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while ((count = in.read(buffer)) != -1) { 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.write(buffer, 0, count); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closeQuietly(in); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Writes a header for the given file. 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void writeHeader(File file, OutputStream out) 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws IOException { 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String header = "*** " + file.toString() + "\n"; 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.write(header.getBytes()); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Closes the given resource. Logs exceptions. 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param closeable 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void closeQuietly(Closeable closeable) { 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (closeable != null) { 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closeable.close(); 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException e) { 1858a9b22056b13477f59df934928c00c58b5871c95Joe Onorato Slog.w(LOG_TAG, e); 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Pauses momentarily before we start the next dump. 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void pause() { 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Thread.sleep(INTERVAL); 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (InterruptedException e) { /* ignore */ } 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Stops dumping. 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private synchronized void stop() { 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project running = false; 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Waits until someone starts us. 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private synchronized void waitForStart() { 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (!running) { 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project wait(); 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (InterruptedException e) { /* ignore */ } 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Instructs the monitoring to start if it hasn't already. 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private synchronized void startMonitoring() { 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!running) { 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project running = true; 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notifyAll(); 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static DeviceMonitor instance = new DeviceMonitor(); 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Starts monitoring if it hasn't started already. 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static void start() { 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project instance.startMonitoring(); 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 235