ZygoteInit.java revision 02f042ddd9ddf47ef88c4f174eb19a9bee296a45
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 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.internal.os; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 194c74f8c1713fa82904b10beec4da9ad8ebb97375Kenny Rootimport static libcore.io.OsConstants.S_IRWXG; 204c74f8c1713fa82904b10beec4da9ad8ebb97375Kenny Rootimport static libcore.io.OsConstants.S_IRWXO; 214c74f8c1713fa82904b10beec4da9ad8ebb97375Kenny Root 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.Resources; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.net.LocalServerSocket; 2574c691221b620d74eafff315bf7c8ed8c4b58f3aRomain Guyimport android.opengl.EGL14; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Debug; 27ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brownimport android.os.Process; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.SystemClock; 29c5e3638c06f30827cdc6eb0d987adb677e900487Romain Guyimport android.os.SystemProperties; 306ad0452e6301c0650f58f3991f7c523f6f279ddbJamie Gennisimport android.os.Trace; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.EventLog; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Log; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport dalvik.system.VMRuntime; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport dalvik.system.Zygote; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3746703b099516c383a6882815bcf9cd4df0ec538dBrian Carlstromimport libcore.io.IoUtils; 384c74f8c1713fa82904b10beec4da9ad8ebb97375Kenny Rootimport libcore.io.Libcore; 3948a06e740782184bd126ab743150b474abc9e6a4Alex Klyubinimport libcore.io.OsConstants; 4046703b099516c383a6882815bcf9cd4df0ec538dBrian Carlstrom 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.BufferedReader; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.FileDescriptor; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.IOException; 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.InputStream; 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.InputStreamReader; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.lang.reflect.InvocationTargetException; 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.lang.reflect.Method; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.lang.reflect.Modifier; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Startup class for the zygote process. 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Pre-initializes some classes, and then waits for commands on a UNIX domain 55e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes * socket. Based on these commands, forks off child processes that inherit 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the initial state of the VM. 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Please see {@link ZygoteConnection.Arguments} for documentation on the 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * client protocol. 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ZygoteInit { 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String TAG = "Zygote"; 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 66c5e3638c06f30827cdc6eb0d987adb677e900487Romain Guy private static final String PROPERTY_DISABLE_OPENGL_PRELOADING = "ro.zygote.disable_gl_preload"; 67c5e3638c06f30827cdc6eb0d987adb677e900487Romain Guy 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String ANDROID_SOCKET_ENV = "ANDROID_SOCKET_zygote"; 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int LOG_BOOT_PROGRESS_PRELOAD_START = 3020; 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int LOG_BOOT_PROGRESS_PRELOAD_END = 3030; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** when preloading, GC after allocating this many bytes */ 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int PRELOAD_GC_THRESHOLD = 50000; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 760b3533ae838811d15afb1017144dfbf7c41df4a8Barry Hayes public static final String USAGE_STRING = 77ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown " <\"start-system-server\"|\"\" for startSystemServer>"; 780b3533ae838811d15afb1017144dfbf7c41df4a8Barry Hayes 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static LocalServerSocket sServerSocket; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Used to pre-load resources. We hold a global reference on it so it 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * never gets destroyed. 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static Resources mResources; 86e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The number of times that the main Zygote loop 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * should run before calling gc() again. 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int GC_LOOP_COUNT = 10; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The name of a resource file that contains classes to preload. 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String PRELOADED_CLASSES = "preloaded-classes"; 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Controls whether we should preload resources during zygote init. */ 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final boolean PRELOAD_RESOURCES = true; 100599c918d9794b51992de85b42befa0c71d9ec07fAndy McFadden 101599c918d9794b51992de85b42befa0c71d9ec07fAndy McFadden /** 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Invokes a static "main(argv[]) method on class "className". 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Converts various failing exceptions into RuntimeExceptions, with 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the assumption that they will then cause the VM instance to exit. 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param loader class loader to use 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param className Fully-qualified class name 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param argv Argument vector for main() 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static void invokeStaticMain(ClassLoader loader, 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String className, String[] argv) 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws ZygoteInit.MethodAndArgsCaller { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Class<?> cl; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cl = loader.loadClass(className); 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (ClassNotFoundException ex) { 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "Missing class when invoking static main " + className, 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ex); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Method m; 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project m = cl.getMethod("main", new Class[] { String[].class }); 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (NoSuchMethodException ex) { 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "Missing static main on " + className, ex); 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (SecurityException ex) { 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "Problem getting static main on " + className, ex); 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int modifiers = m.getModifiers(); 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (! (Modifier.isStatic(modifiers) && Modifier.isPublic(modifiers))) { 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "Main method is not public and static on " + className); 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This throw gets caught in ZygoteInit.main(), which responds 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by invoking the exception's run() method. This arrangement 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * clears up all the stack frames that were required in setting 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * up the process. 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ZygoteInit.MethodAndArgsCaller(m, argv); 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Registers a server socket for zygote command connections 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws RuntimeException when open fails 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void registerZygoteSocket() { 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sServerSocket == null) { 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fileDesc; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String env = System.getenv(ANDROID_SOCKET_ENV); 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fileDesc = Integer.parseInt(env); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (RuntimeException ex) { 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ANDROID_SOCKET_ENV + " unset or invalid", ex); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sServerSocket = new LocalServerSocket( 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project createFileDescriptor(fileDesc)); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException ex) { 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "Error binding to local socket '" + fileDesc + "'", ex); 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Waits for and accepts a single command connection. Throws 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * RuntimeException on failure. 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static ZygoteConnection acceptCommandPeer() { 180e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee try { 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new ZygoteConnection(sServerSocket.accept()); 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException ex) { 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException( 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "IOException during accept()", ex); 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Close and clean up zygote sockets. Called on shutdown and on the 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * child's exit path. 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static void closeServerSocket() { 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sServerSocket != null) { 19502f042ddd9ddf47ef88c4f174eb19a9bee296a45Dave Platt FileDescriptor fd = sServerSocket.getFileDescriptor(); 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sServerSocket.close(); 19702f042ddd9ddf47ef88c4f174eb19a9bee296a45Dave Platt if (fd != null) { 19802f042ddd9ddf47ef88c4f174eb19a9bee296a45Dave Platt Libcore.os.close(fd); 19902f042ddd9ddf47ef88c4f174eb19a9bee296a45Dave Platt } 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException ex) { 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.e(TAG, "Zygote: error closing sockets", ex); 20302f042ddd9ddf47ef88c4f174eb19a9bee296a45Dave Platt } catch (libcore.io.ErrnoException ex) { 20402f042ddd9ddf47ef88c4f174eb19a9bee296a45Dave Platt Log.e(TAG, "Zygote: error closing descriptor", ex); 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sServerSocket = null; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int UNPRIVILEGED_UID = 9999; 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int UNPRIVILEGED_GID = 9999; 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ROOT_UID = 0; 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int ROOT_GID = 0; 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets effective user ID. 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void setEffectiveUser(int uid) { 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int errno = setreuid(ROOT_UID, uid); 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (errno != 0) { 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.e(TAG, "setreuid() failed. errno: " + errno); 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets effective group ID. 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void setEffectiveGroup(int gid) { 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int errno = setregid(ROOT_GID, gid); 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (errno != 0) { 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.e(TAG, "setregid() failed. errno: " + errno); 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2360c2313dc4f4bfaf6aa0506df4c54f25591a9e4c7Jeff Brown static void preload() { 2370c2313dc4f4bfaf6aa0506df4c54f25591a9e4c7Jeff Brown preloadClasses(); 2380c2313dc4f4bfaf6aa0506df4c54f25591a9e4c7Jeff Brown preloadResources(); 23974c691221b620d74eafff315bf7c8ed8c4b58f3aRomain Guy preloadOpenGL(); 24074c691221b620d74eafff315bf7c8ed8c4b58f3aRomain Guy } 24174c691221b620d74eafff315bf7c8ed8c4b58f3aRomain Guy 24274c691221b620d74eafff315bf7c8ed8c4b58f3aRomain Guy private static void preloadOpenGL() { 243c5e3638c06f30827cdc6eb0d987adb677e900487Romain Guy if (!SystemProperties.getBoolean(PROPERTY_DISABLE_OPENGL_PRELOADING, false)) { 244c5e3638c06f30827cdc6eb0d987adb677e900487Romain Guy EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY); 245c5e3638c06f30827cdc6eb0d987adb677e900487Romain Guy } 2460c2313dc4f4bfaf6aa0506df4c54f25591a9e4c7Jeff Brown } 2470c2313dc4f4bfaf6aa0506df4c54f25591a9e4c7Jeff Brown 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Performs Zygote process initialization. Loads and initializes 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * commonly used classes. 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Most classes only cause a few hundred bytes to be allocated, but 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * a few will allocate a dozen Kbytes (in one case, 500+K). 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void preloadClasses() { 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final VMRuntime runtime = VMRuntime.getRuntime(); 257e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 258dc7bf5d8bff86bed7947806c81a28aff5e9a8c3eAndy McFadden InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream( 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project PRELOADED_CLASSES); 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (is == null) { 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.e(TAG, "Couldn't find " + PRELOADED_CLASSES + "."); 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.i(TAG, "Preloading classes..."); 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long startTime = SystemClock.uptimeMillis(); 265e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Drop root perms while running static initializers. 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setEffectiveGroup(UNPRIVILEGED_GID); 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setEffectiveUser(UNPRIVILEGED_UID); 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Alter the target heap utilization. With explicit GCs this 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is not likely to have any effect. 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project float defaultUtilization = runtime.getTargetHeapUtilization(); 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.setTargetHeapUtilization(0.8f); 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Start with a clean slate. 27608065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.startAllocCounting(); 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 281e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee BufferedReader br 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new BufferedReader(new InputStreamReader(is), 256); 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = 0; 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String line; 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while ((line = br.readLine()) != null) { 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Skip comments and blank lines. 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project line = line.trim(); 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (line.startsWith("#") || line.equals("")) { 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 29443a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato if (false) { 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(TAG, "Preloading " + line + "..."); 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Class.forName(line); 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Debug.getGlobalAllocSize() > PRELOAD_GC_THRESHOLD) { 29943a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato if (false) { 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(TAG, 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project " GC at " + Debug.getGlobalAllocSize()); 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30308065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.resetGlobalAllocSize(); 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project count++; 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (ClassNotFoundException e) { 309e2417541b4c1c0954295dd77d6c95512f99a9f91Jesse Wilson Log.w(TAG, "Class not found for preloading: " + line); 310e92f19e58caa05f5f4086d12a6396116ce6182aaBrian Carlstrom } catch (UnsatisfiedLinkError e) { 311e92f19e58caa05f5f4086d12a6396116ce6182aaBrian Carlstrom Log.w(TAG, "Problem preloading " + line + ": " + e); 3122e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee } catch (Throwable t) { 3132e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee Log.e(TAG, "Error preloading " + line + ".", t); 3142e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee if (t instanceof Error) { 3152e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee throw (Error) t; 3162e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee } 3172e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee if (t instanceof RuntimeException) { 3182e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee throw (RuntimeException) t; 3192e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee } 3202e93f65cab0b4b21a1285b83e985559325e87a3aBob Lee throw new RuntimeException(t); 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.i(TAG, "...preloaded " + count + " classes in " 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + (SystemClock.uptimeMillis()-startTime) + "ms."); 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException e) { 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.e(TAG, "Error reading " + PRELOADED_CLASSES + ".", e); 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 32946703b099516c383a6882815bcf9cd4df0ec538dBrian Carlstrom IoUtils.closeQuietly(is); 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Restore default. 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.setTargetHeapUtilization(defaultUtilization); 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3336c3baf12e0a6417177793a2e7e95d22721203813Brian Carlstrom // Fill in dex caches with classes, fields, and methods brought in by preloading. 3346c3baf12e0a6417177793a2e7e95d22721203813Brian Carlstrom runtime.preloadDexCaches(); 3356c3baf12e0a6417177793a2e7e95d22721203813Brian Carlstrom 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.stopAllocCounting(); 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Bring back root. We'll need it later. 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setEffectiveUser(ROOT_UID); 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setEffectiveGroup(ROOT_GID); 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Load in commonly used resources, so they can be shared across 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * processes. 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * These tend to be a few Kbytes, but are frequently in the 20-40K 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * range, and occasionally even larger. 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void preloadResources() { 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final VMRuntime runtime = VMRuntime.getRuntime(); 354e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.startAllocCounting(); 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 35708065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResources = Resources.getSystem(); 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResources.startPreloading(); 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (PRELOAD_RESOURCES) { 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.i(TAG, "Preloading resources..."); 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long startTime = SystemClock.uptimeMillis(); 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray ar = mResources.obtainTypedArray( 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.array.preloaded_drawables); 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int N = preloadDrawables(runtime, ar); 36814577c4df57004131174fbe435031a18f3e7996bJeff Brown ar.recycle(); 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.i(TAG, "...preloaded " + N + " resources in " 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + (SystemClock.uptimeMillis()-startTime) + "ms."); 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startTime = SystemClock.uptimeMillis(); 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ar = mResources.obtainTypedArray( 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.array.preloaded_color_state_lists); 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project N = preloadColorStateLists(runtime, ar); 37614577c4df57004131174fbe435031a18f3e7996bJeff Brown ar.recycle(); 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.i(TAG, "...preloaded " + N + " resources in " 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + (SystemClock.uptimeMillis()-startTime) + "ms."); 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResources.finishPreloading(); 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (RuntimeException e) { 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.w(TAG, "Failure preloading resources", e); 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.stopAllocCounting(); 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static int preloadColorStateLists(VMRuntime runtime, TypedArray ar) { 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int N = ar.length(); 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i=0; i<N; i++) { 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Debug.getGlobalAllocSize() > PRELOAD_GC_THRESHOLD) { 39243a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato if (false) { 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(TAG, " GC at " + Debug.getGlobalAllocSize()); 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39508065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.resetGlobalAllocSize(); 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int id = ar.getResourceId(i, 0); 40043a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato if (false) { 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(TAG, "Preloading resource #" + Integer.toHexString(id)); 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id != 0) { 404dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (mResources.getColorStateList(id) == null) { 405dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn throw new IllegalArgumentException( 406dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn "Unable to find preloaded color resource #0x" 407dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn + Integer.toHexString(id) 408dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn + " (" + ar.getString(i) + ")"); 409dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn } 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return N; 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static int preloadDrawables(VMRuntime runtime, TypedArray ar) { 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int N = ar.length(); 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i=0; i<N; i++) { 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Debug.getGlobalAllocSize() > PRELOAD_GC_THRESHOLD) { 42043a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato if (false) { 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(TAG, " GC at " + Debug.getGlobalAllocSize()); 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42308065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.resetGlobalAllocSize(); 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int id = ar.getResourceId(i, 0); 42843a17654cf4bfe7f1ec22bd8b7b32daccdf27c09Joe Onorato if (false) { 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(TAG, "Preloading resource #" + Integer.toHexString(id)); 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (id != 0) { 432dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn if (mResources.getDrawable(id) == null) { 433dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn throw new IllegalArgumentException( 434dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn "Unable to find preloaded drawable resource #0x" 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + Integer.toHexString(id) 436dde331cebd87982faded6818ad5f9927ff994c96Dianne Hackborn + " (" + ar.getString(i) + ")"); 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return N; 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Runs several special GCs to try to clean up a few generations of 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * softly- and final-reachable objects, along with any other garbage. 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is only useful just before a fork(). 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /*package*/ static void gc() { 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final VMRuntime runtime = VMRuntime.getRuntime(); 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* runFinalizationSync() lets finalizers be called in Zygote, 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * which doesn't have a HeapWorker thread. 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 45408065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 45608065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 45808065b9f09ead8895d97b2971622af8c179e1768Brian Carlstrom System.gc(); 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project runtime.runFinalizationSync(); 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Finish remaining work for the newly forked system server process. 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void handleSystemServerProcess( 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ZygoteConnection.Arguments parsedArgs) 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws ZygoteInit.MethodAndArgsCaller { 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closeServerSocket(); 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 47190960e87ecae696f73ae18e46c2f003fc3f592ccMike Lockwood // set umask to 0077 so new files and directories will default to owner-only permissions. 4724c74f8c1713fa82904b10beec4da9ad8ebb97375Kenny Root Libcore.os.umask(S_IRWXG | S_IRWXO); 47390960e87ecae696f73ae18e46c2f003fc3f592ccMike Lockwood 474ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown if (parsedArgs.niceName != null) { 475ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown Process.setArgV0(parsedArgs.niceName); 476ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown } 477ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown 478ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown if (parsedArgs.invokeWith != null) { 479ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown WrapperInit.execApplication(parsedArgs.invokeWith, 480e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes parsedArgs.niceName, parsedArgs.targetSdkVersion, 481e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes null, parsedArgs.remainingArgs); 482ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown } else { 483ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown /* 484ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown * Pass the remaining arguments to SystemServer. 485ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown */ 486e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes RuntimeInit.zygoteInit(parsedArgs.targetSdkVersion, parsedArgs.remainingArgs); 487ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown } 488ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* should never reach here */ 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Prepare the arguments and fork for the system server process. 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 495e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee private static boolean startSystemServer() 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws MethodAndArgsCaller, RuntimeException { 49748a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin long capabilities = posixCapabilitiesAsBits( 49848a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_KILL, 49948a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_NET_ADMIN, 50048a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_NET_BIND_SERVICE, 50148a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_NET_BROADCAST, 50248a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_NET_RAW, 50348a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_SYS_MODULE, 50448a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_SYS_NICE, 50548a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_SYS_RESOURCE, 50648a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_SYS_TIME, 50748a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin OsConstants.CAP_SYS_TTY_CONFIG 50848a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin ); 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* Hardcoded command line to start the system server */ 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String args[] = { 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "--setuid=1000", 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "--setgid=1000", 513184a0100abc431fc3d6d8dd1b20212b84958cadaJeff Sharkey "--setgroups=1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,1018,1032,3001,3002,3003,3006,3007", 51448a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin "--capabilities=" + capabilities + "," + capabilities, 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "--runtime-init", 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "--nice-name=system_server", 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "com.android.server.SystemServer", 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ZygoteConnection.Arguments parsedArgs = null; 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int pid; 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project parsedArgs = new ZygoteConnection.Arguments(args); 525ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown ZygoteConnection.applyDebuggerSystemProperty(parsedArgs); 526ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown ZygoteConnection.applyInvokeWithSystemProperty(parsedArgs); 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* Request to fork the system server process */ 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pid = Zygote.forkSystemServer( 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project parsedArgs.uid, parsedArgs.gid, 531e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes parsedArgs.gids, 532e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes parsedArgs.debugFlags, 533e1dfcb7ab01fb991079ec1f70f75281a0ca9073eElliott Hughes null, 5341b4c7966b15382e9ffb2bfe6468dcef0b6d090b6Andy McFadden parsedArgs.permittedCapabilities, 5351b4c7966b15382e9ffb2bfe6468dcef0b6d090b6Andy McFadden parsedArgs.effectiveCapabilities); 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IllegalArgumentException ex) { 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException(ex); 538e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee } 539e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* For child process */ 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (pid == 0) { 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handleSystemServerProcess(parsedArgs); 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 54848a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin /** 54948a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin * Gets the bit array representation of the provided list of POSIX capabilities. 55048a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin */ 55148a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin private static long posixCapabilitiesAsBits(int... capabilities) { 55248a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin long result = 0; 55348a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin for (int capability : capabilities) { 55448a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin if ((capability < 0) || (capability > OsConstants.CAP_LAST_CAP)) { 55548a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin throw new IllegalArgumentException(String.valueOf(capability)); 55648a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin } 55748a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin result |= (1L << capability); 55848a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin } 55948a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin return result; 56048a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin } 56148a06e740782184bd126ab743150b474abc9e6a4Alex Klyubin 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static void main(String argv[]) { 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 564e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee // Start profiling the zygote initialization. 565e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee SamplingProfilerIntegration.start(); 566e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project registerZygoteSocket(); 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_START, 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SystemClock.uptimeMillis()); 5700c2313dc4f4bfaf6aa0506df4c54f25591a9e4c7Jeff Brown preload(); 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_END, 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SystemClock.uptimeMillis()); 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5741751086360056bc60d00f2ed2988bc82be9e7bd9Brian Carlstrom // Finish profiling the zygote initialization. 5751751086360056bc60d00f2ed2988bc82be9e7bd9Brian Carlstrom SamplingProfilerIntegration.writeZygoteSnapshot(); 576e540833fdff4d58e37c9ba859388e24e2945ed45Bob Lee 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do an initial gc to clean up after startup 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gc(); 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5806ad0452e6301c0650f58f3991f7c523f6f279ddbJamie Gennis // Disable tracing so that forked processes do not inherit stale tracing tags from 5816ad0452e6301c0650f58f3991f7c523f6f279ddbJamie Gennis // Zygote. 5826ad0452e6301c0650f58f3991f7c523f6f279ddbJamie Gennis Trace.setTracingEnabled(false); 5836ad0452e6301c0650f58f3991f7c523f6f279ddbJamie Gennis 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If requested, start system server directly from Zygote 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (argv.length != 2) { 5860b3533ae838811d15afb1017144dfbf7c41df4a8Barry Hayes throw new RuntimeException(argv[0] + USAGE_STRING); 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 589ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown if (argv[1].equals("start-system-server")) { 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startSystemServer(); 591ebed7d6e35f7f960e6e6add2b8ab7c7a31a511c3Jeff Brown } else if (!argv[1].equals("")) { 5920b3533ae838811d15afb1017144dfbf7c41df4a8Barry Hayes throw new RuntimeException(argv[0] + USAGE_STRING); 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.i(TAG, "Accepting command socket connections"); 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 597cae3d9f0ab2756e3659efc7a08830d2d7b43a05eNick Kralevich runSelectLoop(); 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closeServerSocket(); 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (MethodAndArgsCaller caller) { 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project caller.run(); 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (RuntimeException ex) { 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.e(TAG, "Zygote died with exception", ex); 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closeServerSocket(); 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw ex; 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Runs the zygote process's select loop. Accepts new connections as 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * they happen, and reads commands from connections one spawn-request's 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * worth at a time. 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws MethodAndArgsCaller in a child process when a main() should 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * be executed. 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 617cae3d9f0ab2756e3659efc7a08830d2d7b43a05eNick Kralevich private static void runSelectLoop() throws MethodAndArgsCaller { 618cae3d9f0ab2756e3659efc7a08830d2d7b43a05eNick Kralevich ArrayList<FileDescriptor> fds = new ArrayList<FileDescriptor>(); 619cae3d9f0ab2756e3659efc7a08830d2d7b43a05eNick Kralevich ArrayList<ZygoteConnection> peers = new ArrayList<ZygoteConnection>(); 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FileDescriptor[] fdArray = new FileDescriptor[4]; 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fds.add(sServerSocket.getFileDescriptor()); 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project peers.add(null); 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int loopCount = GC_LOOP_COUNT; 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (true) { 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index; 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Call gc() before we block in select(). 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * It's work that has to be done anyway, and it's better 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to avoid making every child do it. It will also 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * madvise() any free memory as a side-effect. 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Don't call it every time, because walking the entire 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * heap is a lot of overhead to free a few hundred bytes. 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (loopCount <= 0) { 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project gc(); 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project loopCount = GC_LOOP_COUNT; 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project loopCount--; 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fdArray = fds.toArray(fdArray); 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = selectReadable(fdArray); 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException ex) { 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Error in select()", ex); 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index < 0) { 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Error in select()"); 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (index == 0) { 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ZygoteConnection newPeer = acceptCommandPeer(); 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project peers.add(newPeer); 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fds.add(newPeer.getFileDesciptor()); 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean done; 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project done = peers.get(index).runOnce(); 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (done) { 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project peers.remove(index); 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fds.remove(index); 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The Linux syscall "setreuid()" 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param ruid real uid 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param euid effective uid 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return 0 on success, non-zero errno on fail 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native int setreuid(int ruid, int euid); 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The Linux syscall "setregid()" 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param rgid real gid 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param egid effective gid 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return 0 on success, non-zero errno on fail 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native int setregid(int rgid, int egid); 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Invokes the linux syscall "setpgid" 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pid pid to change 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pgid new process group of pid 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return 0 on success or non-zero errno on fail 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native int setpgid(int pid, int pgid); 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Invokes the linux syscall "getpgid" 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pid pid to query 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return pgid of pid in question 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IOException on error 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native int getpgid(int pid) throws IOException; 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Invokes the syscall dup2() to copy the specified descriptors into 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * stdin, stdout, and stderr. The existing stdio descriptors will be 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * closed and errors during close will be ignored. The specified 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * descriptors will also remain open at their original descriptor numbers, 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * so the caller may want to close the original descriptors. 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param in new stdin 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param out new stdout 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param err new stderr 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IOException 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native void reopenStdio(FileDescriptor in, 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FileDescriptor out, FileDescriptor err) throws IOException; 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Toggles the close-on-exec flag for the specified file descriptor. 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fd non-null; file descriptor 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param flag desired close-on-exec flag state 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IOException 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native void setCloseOnExec(FileDescriptor fd, boolean flag) 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws IOException; 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Retrieves the permitted capability set from another process. 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pid >=0 process ID or 0 for this process 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IOException on error 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native long capgetPermitted(int pid) 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws IOException; 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Invokes select() on the provider array of file descriptors (selecting 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for readability only). Array elements of null are ignored. 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fds non-null; array of readable file descriptors 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return index of descriptor that is now readable or -1 for empty array. 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IOException if an error occurs 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native int selectReadable(FileDescriptor[] fds) throws IOException; 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a file descriptor from an int fd. 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fd integer OS file descriptor 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return non-null; FileDescriptor instance 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IOException if fd is invalid 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static native FileDescriptor createFileDescriptor(int fd) 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws IOException; 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Class not instantiable. 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ZygoteInit() { 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Helper exception class which holds a method and arguments and 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can call them. This is used as part of a trampoline to get rid of 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the initial process setup stack frames. 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class MethodAndArgsCaller extends Exception 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project implements Runnable { 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** method to call */ 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final Method mMethod; 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** argument array */ 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final String[] mArgs; 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public MethodAndArgsCaller(Method method, String[] args) { 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMethod = method; 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mArgs = args; 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMethod.invoke(null, new Object[] { mArgs }); 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IllegalAccessException ex) { 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException(ex); 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (InvocationTargetException ex) { 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Throwable cause = ex.getCause(); 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (cause instanceof RuntimeException) { 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw (RuntimeException) cause; 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (cause instanceof Error) { 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw (Error) cause; 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException(ex); 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 800