The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.internal.os; |
| 18 | |
Elliott Hughes | 894724b | 2014-12-15 12:39:51 -0800 | [diff] [blame] | 19 | import static android.system.OsConstants.POLLIN; |
Elliott Hughes | a9569ff | 2014-04-28 20:53:52 -0700 | [diff] [blame] | 20 | import static android.system.OsConstants.S_IRWXG; |
| 21 | import static android.system.OsConstants.S_IRWXO; |
Kenny Root | 4c74f8c | 2012-08-17 08:45:55 -0700 | [diff] [blame] | 22 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 23 | import android.content.res.Resources; |
| 24 | import android.content.res.TypedArray; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 25 | import android.net.LocalServerSocket; |
Romain Guy | 74c6912 | 2013-05-08 17:54:20 -0700 | [diff] [blame] | 26 | import android.opengl.EGL14; |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 27 | import android.os.Process; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 28 | import android.os.SystemClock; |
Romain Guy | c5e3638 | 2013-05-09 11:08:17 -0700 | [diff] [blame] | 29 | import android.os.SystemProperties; |
Jamie Gennis | 6ad0452 | 2013-04-15 18:53:24 -0700 | [diff] [blame] | 30 | import android.os.Trace; |
Bill Yi | 9a76e9b | 2014-04-29 18:52:48 -0700 | [diff] [blame] | 31 | import android.system.ErrnoException; |
Elliott Hughes | 860c591 | 2014-04-28 19:19:13 -0700 | [diff] [blame] | 32 | import android.system.Os; |
| 33 | import android.system.OsConstants; |
Elliott Hughes | 894724b | 2014-12-15 12:39:51 -0800 | [diff] [blame] | 34 | import android.system.StructPollfd; |
Raph Levien | c3dd1c1 | 2015-04-06 10:37:57 -0700 | [diff] [blame] | 35 | import android.text.Hyphenator; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 36 | import android.util.EventLog; |
| 37 | import android.util.Log; |
Torne (Richard Coles) | 08cfaf6 | 2014-05-08 16:07:05 +0100 | [diff] [blame] | 38 | import android.webkit.WebViewFactory; |
Andreas Gampe | ddc1397 | 2016-02-26 16:54:59 -0800 | [diff] [blame] | 39 | import android.widget.TextView; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 40 | |
Jeff Sharkey | fdeeeea | 2016-01-11 17:34:24 -0700 | [diff] [blame] | 41 | import com.android.internal.os.InstallerConnection.InstallerException; |
| 42 | |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 43 | import dalvik.system.DexFile; |
| 44 | import dalvik.system.PathClassLoader; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 45 | import dalvik.system.VMRuntime; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 46 | |
Brian Carlstrom | 46703b0 | 2011-04-06 15:41:29 -0700 | [diff] [blame] | 47 | import libcore.io.IoUtils; |
| 48 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 49 | import java.io.BufferedReader; |
| 50 | import java.io.FileDescriptor; |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 51 | import java.io.FileInputStream; |
| 52 | import java.io.FileNotFoundException; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 53 | import java.io.IOException; |
| 54 | import java.io.InputStream; |
| 55 | import java.io.InputStreamReader; |
| 56 | import java.lang.reflect.InvocationTargetException; |
| 57 | import java.lang.reflect.Method; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 58 | import java.util.ArrayList; |
| 59 | |
| 60 | /** |
| 61 | * Startup class for the zygote process. |
| 62 | * |
| 63 | * Pre-initializes some classes, and then waits for commands on a UNIX domain |
Elliott Hughes | e1dfcb7 | 2011-07-08 11:08:07 -0700 | [diff] [blame] | 64 | * socket. Based on these commands, forks off child processes that inherit |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 65 | * the initial state of the VM. |
| 66 | * |
| 67 | * Please see {@link ZygoteConnection.Arguments} for documentation on the |
| 68 | * client protocol. |
| 69 | * |
| 70 | * @hide |
| 71 | */ |
| 72 | public class ZygoteInit { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 73 | private static final String TAG = "Zygote"; |
| 74 | |
Romain Guy | c5e3638 | 2013-05-09 11:08:17 -0700 | [diff] [blame] | 75 | private static final String PROPERTY_DISABLE_OPENGL_PRELOADING = "ro.zygote.disable_gl_preload"; |
Luis Hector Chavez | 5dd239a | 2015-10-06 14:01:45 -0700 | [diff] [blame] | 76 | private static final String PROPERTY_RUNNING_IN_CONTAINER = "ro.boot.container"; |
Romain Guy | c5e3638 | 2013-05-09 11:08:17 -0700 | [diff] [blame] | 77 | |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 78 | private static final String ANDROID_SOCKET_PREFIX = "ANDROID_SOCKET_"; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 79 | |
| 80 | private static final int LOG_BOOT_PROGRESS_PRELOAD_START = 3020; |
| 81 | private static final int LOG_BOOT_PROGRESS_PRELOAD_END = 3030; |
| 82 | |
| 83 | /** when preloading, GC after allocating this many bytes */ |
| 84 | private static final int PRELOAD_GC_THRESHOLD = 50000; |
| 85 | |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 86 | private static final String ABI_LIST_ARG = "--abi-list="; |
| 87 | |
| 88 | private static final String SOCKET_NAME_ARG = "--socket-name="; |
Barry Hayes | 0b3533a | 2010-01-20 12:46:47 -0800 | [diff] [blame] | 89 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 90 | private static LocalServerSocket sServerSocket; |
| 91 | |
| 92 | /** |
| 93 | * Used to pre-load resources. We hold a global reference on it so it |
| 94 | * never gets destroyed. |
| 95 | */ |
| 96 | private static Resources mResources; |
Bob Lee | e540833 | 2009-09-04 18:31:17 -0700 | [diff] [blame] | 97 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 98 | /** |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 99 | * The path of a file that contains classes to preload. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 100 | */ |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 101 | private static final String PRELOADED_CLASSES = "/system/etc/preloaded-classes"; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 102 | |
| 103 | /** Controls whether we should preload resources during zygote init. */ |
Steve Paik | 3c27a23 | 2015-06-10 18:25:44 -0700 | [diff] [blame] | 104 | public static final boolean PRELOAD_RESOURCES = true; |
Andy McFadden | 599c918 | 2009-04-08 00:35:56 -0700 | [diff] [blame] | 105 | |
| 106 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 107 | * Registers a server socket for zygote command connections |
| 108 | * |
| 109 | * @throws RuntimeException when open fails |
| 110 | */ |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 111 | private static void registerZygoteSocket(String socketName) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 112 | if (sServerSocket == null) { |
| 113 | int fileDesc; |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 114 | final String fullSocketName = ANDROID_SOCKET_PREFIX + socketName; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 115 | try { |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 116 | String env = System.getenv(fullSocketName); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 117 | fileDesc = Integer.parseInt(env); |
| 118 | } catch (RuntimeException ex) { |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 119 | throw new RuntimeException(fullSocketName + " unset or invalid", ex); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | try { |
Elliott Hughes | 3fe5951 | 2014-12-12 14:07:34 -0800 | [diff] [blame] | 123 | FileDescriptor fd = new FileDescriptor(); |
| 124 | fd.setInt$(fileDesc); |
| 125 | sServerSocket = new LocalServerSocket(fd); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 126 | } catch (IOException ex) { |
| 127 | throw new RuntimeException( |
| 128 | "Error binding to local socket '" + fileDesc + "'", ex); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Waits for and accepts a single command connection. Throws |
| 135 | * RuntimeException on failure. |
| 136 | */ |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 137 | private static ZygoteConnection acceptCommandPeer(String abiList) { |
Bob Lee | e540833 | 2009-09-04 18:31:17 -0700 | [diff] [blame] | 138 | try { |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 139 | return new ZygoteConnection(sServerSocket.accept(), abiList); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 140 | } catch (IOException ex) { |
| 141 | throw new RuntimeException( |
| 142 | "IOException during accept()", ex); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Close and clean up zygote sockets. Called on shutdown and on the |
| 148 | * child's exit path. |
| 149 | */ |
| 150 | static void closeServerSocket() { |
| 151 | try { |
| 152 | if (sServerSocket != null) { |
Dave Platt | 02f042d | 2013-12-12 15:45:49 -0800 | [diff] [blame] | 153 | FileDescriptor fd = sServerSocket.getFileDescriptor(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 154 | sServerSocket.close(); |
Dave Platt | 02f042d | 2013-12-12 15:45:49 -0800 | [diff] [blame] | 155 | if (fd != null) { |
Bill Yi | 9a76e9b | 2014-04-29 18:52:48 -0700 | [diff] [blame] | 156 | Os.close(fd); |
Dave Platt | 02f042d | 2013-12-12 15:45:49 -0800 | [diff] [blame] | 157 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 158 | } |
| 159 | } catch (IOException ex) { |
| 160 | Log.e(TAG, "Zygote: error closing sockets", ex); |
Bill Yi | 9a76e9b | 2014-04-29 18:52:48 -0700 | [diff] [blame] | 161 | } catch (ErrnoException ex) { |
Dave Platt | 02f042d | 2013-12-12 15:45:49 -0800 | [diff] [blame] | 162 | Log.e(TAG, "Zygote: error closing descriptor", ex); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | sServerSocket = null; |
| 166 | } |
| 167 | |
Dave Platt | 89d4c89 | 2014-02-05 17:06:42 -0800 | [diff] [blame] | 168 | /** |
| 169 | * Return the server socket's underlying file descriptor, so that |
| 170 | * ZygoteConnection can pass it to the native code for proper |
| 171 | * closure after a child process is forked off. |
| 172 | */ |
| 173 | |
| 174 | static FileDescriptor getServerSocketFileDescriptor() { |
| 175 | return sServerSocket.getFileDescriptor(); |
| 176 | } |
| 177 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 178 | private static final int UNPRIVILEGED_UID = 9999; |
| 179 | private static final int UNPRIVILEGED_GID = 9999; |
| 180 | |
| 181 | private static final int ROOT_UID = 0; |
| 182 | private static final int ROOT_GID = 0; |
| 183 | |
Jeff Brown | 0c2313d | 2011-06-10 22:46:40 -0700 | [diff] [blame] | 184 | static void preload() { |
Bill Yi | 9a76e9b | 2014-04-29 18:52:48 -0700 | [diff] [blame] | 185 | Log.d(TAG, "begin preload"); |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 186 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadClasses"); |
| 187 | preloadClasses(); |
| 188 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
| 189 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadResources"); |
| 190 | preloadResources(); |
| 191 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
| 192 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadOpenGL"); |
Romain Guy | 74c6912 | 2013-05-08 17:54:20 -0700 | [diff] [blame] | 193 | preloadOpenGL(); |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 194 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
Brian Carlstrom | 6c9af96 | 2014-09-11 15:36:00 -0700 | [diff] [blame] | 195 | preloadSharedLibraries(); |
Raph Levien | c3dd1c1 | 2015-04-06 10:37:57 -0700 | [diff] [blame] | 196 | preloadTextResources(); |
Torne (Richard Coles) | 08cfaf6 | 2014-05-08 16:07:05 +0100 | [diff] [blame] | 197 | // Ask the WebViewFactory to do any initialization that must run in the zygote process, |
| 198 | // for memory sharing purposes. |
| 199 | WebViewFactory.prepareWebViewInZygote(); |
Bill Yi | 9a76e9b | 2014-04-29 18:52:48 -0700 | [diff] [blame] | 200 | Log.d(TAG, "end preload"); |
Romain Guy | 74c6912 | 2013-05-08 17:54:20 -0700 | [diff] [blame] | 201 | } |
| 202 | |
Brian Carlstrom | 6c9af96 | 2014-09-11 15:36:00 -0700 | [diff] [blame] | 203 | private static void preloadSharedLibraries() { |
| 204 | Log.i(TAG, "Preloading shared libraries..."); |
| 205 | System.loadLibrary("android"); |
| 206 | System.loadLibrary("compiler_rt"); |
| 207 | System.loadLibrary("jnigraphics"); |
| 208 | } |
| 209 | |
Romain Guy | 74c6912 | 2013-05-08 17:54:20 -0700 | [diff] [blame] | 210 | private static void preloadOpenGL() { |
Romain Guy | c5e3638 | 2013-05-09 11:08:17 -0700 | [diff] [blame] | 211 | if (!SystemProperties.getBoolean(PROPERTY_DISABLE_OPENGL_PRELOADING, false)) { |
| 212 | EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY); |
| 213 | } |
Jeff Brown | 0c2313d | 2011-06-10 22:46:40 -0700 | [diff] [blame] | 214 | } |
| 215 | |
Raph Levien | c3dd1c1 | 2015-04-06 10:37:57 -0700 | [diff] [blame] | 216 | private static void preloadTextResources() { |
| 217 | Hyphenator.init(); |
Andreas Gampe | ddc1397 | 2016-02-26 16:54:59 -0800 | [diff] [blame] | 218 | TextView.preloadFontCache(); |
Raph Levien | c3dd1c1 | 2015-04-06 10:37:57 -0700 | [diff] [blame] | 219 | } |
| 220 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 221 | /** |
| 222 | * Performs Zygote process initialization. Loads and initializes |
| 223 | * commonly used classes. |
| 224 | * |
| 225 | * Most classes only cause a few hundred bytes to be allocated, but |
| 226 | * a few will allocate a dozen Kbytes (in one case, 500+K). |
| 227 | */ |
| 228 | private static void preloadClasses() { |
| 229 | final VMRuntime runtime = VMRuntime.getRuntime(); |
Bob Lee | e540833 | 2009-09-04 18:31:17 -0700 | [diff] [blame] | 230 | |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 231 | InputStream is; |
| 232 | try { |
| 233 | is = new FileInputStream(PRELOADED_CLASSES); |
| 234 | } catch (FileNotFoundException e) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 235 | Log.e(TAG, "Couldn't find " + PRELOADED_CLASSES + "."); |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 236 | return; |
| 237 | } |
Bob Lee | e540833 | 2009-09-04 18:31:17 -0700 | [diff] [blame] | 238 | |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 239 | Log.i(TAG, "Preloading classes..."); |
| 240 | long startTime = SystemClock.uptimeMillis(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 241 | |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 242 | // Drop root perms while running static initializers. |
Narayan Kamath | 23e6878 | 2015-01-16 17:22:41 +0000 | [diff] [blame] | 243 | final int reuid = Os.getuid(); |
| 244 | final int regid = Os.getgid(); |
| 245 | |
| 246 | // We need to drop root perms only if we're already root. In the case of "wrapped" |
| 247 | // processes (see WrapperInit), this function is called from an unprivileged uid |
| 248 | // and gid. |
| 249 | boolean droppedPriviliges = false; |
| 250 | if (reuid == ROOT_UID && regid == ROOT_GID) { |
| 251 | try { |
| 252 | Os.setregid(ROOT_GID, UNPRIVILEGED_GID); |
| 253 | Os.setreuid(ROOT_UID, UNPRIVILEGED_UID); |
| 254 | } catch (ErrnoException ex) { |
| 255 | throw new RuntimeException("Failed to drop root", ex); |
| 256 | } |
| 257 | |
| 258 | droppedPriviliges = true; |
Elliott Hughes | 26b56e6 | 2014-12-17 12:28:29 -0800 | [diff] [blame] | 259 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 260 | |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 261 | // Alter the target heap utilization. With explicit GCs this |
| 262 | // is not likely to have any effect. |
| 263 | float defaultUtilization = runtime.getTargetHeapUtilization(); |
| 264 | runtime.setTargetHeapUtilization(0.8f); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 265 | |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 266 | try { |
| 267 | BufferedReader br |
| 268 | = new BufferedReader(new InputStreamReader(is), 256); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 269 | |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 270 | int count = 0; |
| 271 | String line; |
| 272 | while ((line = br.readLine()) != null) { |
| 273 | // Skip comments and blank lines. |
| 274 | line = line.trim(); |
| 275 | if (line.startsWith("#") || line.equals("")) { |
| 276 | continue; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 277 | } |
| 278 | |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 279 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadClass " + line); |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 280 | try { |
| 281 | if (false) { |
| 282 | Log.v(TAG, "Preloading " + line + "..."); |
| 283 | } |
Andreas Gampe | dd8e5fb | 2015-04-21 09:01:51 -0700 | [diff] [blame] | 284 | // Load and explicitly initialize the given class. Use |
| 285 | // Class.forName(String, boolean, ClassLoader) to avoid repeated stack lookups |
| 286 | // (to derive the caller's class-loader). Use true to force initialization, and |
| 287 | // null for the boot classpath class-loader (could as well cache the |
| 288 | // class-loader of this class in a variable). |
Andreas Gampe | c917f74 | 2015-04-20 19:16:37 -0700 | [diff] [blame] | 289 | Class.forName(line, true, null); |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 290 | count++; |
| 291 | } catch (ClassNotFoundException e) { |
| 292 | Log.w(TAG, "Class not found for preloading: " + line); |
| 293 | } catch (UnsatisfiedLinkError e) { |
| 294 | Log.w(TAG, "Problem preloading " + line + ": " + e); |
| 295 | } catch (Throwable t) { |
| 296 | Log.e(TAG, "Error preloading " + line + ".", t); |
| 297 | if (t instanceof Error) { |
| 298 | throw (Error) t; |
| 299 | } |
| 300 | if (t instanceof RuntimeException) { |
| 301 | throw (RuntimeException) t; |
| 302 | } |
| 303 | throw new RuntimeException(t); |
| 304 | } |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 305 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 306 | } |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 307 | |
| 308 | Log.i(TAG, "...preloaded " + count + " classes in " |
| 309 | + (SystemClock.uptimeMillis()-startTime) + "ms."); |
| 310 | } catch (IOException e) { |
| 311 | Log.e(TAG, "Error reading " + PRELOADED_CLASSES + ".", e); |
| 312 | } finally { |
| 313 | IoUtils.closeQuietly(is); |
| 314 | // Restore default. |
| 315 | runtime.setTargetHeapUtilization(defaultUtilization); |
| 316 | |
| 317 | // Fill in dex caches with classes, fields, and methods brought in by preloading. |
Yasuhiro Matsuda | 1ab43d5 | 2015-06-30 17:07:32 +0900 | [diff] [blame] | 318 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadDexCaches"); |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 319 | runtime.preloadDexCaches(); |
Yasuhiro Matsuda | 1ab43d5 | 2015-06-30 17:07:32 +0900 | [diff] [blame] | 320 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
Ying Wang | d0c4535 | 2014-11-13 15:22:47 -0800 | [diff] [blame] | 321 | |
Narayan Kamath | 23e6878 | 2015-01-16 17:22:41 +0000 | [diff] [blame] | 322 | // Bring back root. We'll need it later if we're in the zygote. |
| 323 | if (droppedPriviliges) { |
| 324 | try { |
| 325 | Os.setreuid(ROOT_UID, ROOT_UID); |
| 326 | Os.setregid(ROOT_GID, ROOT_GID); |
| 327 | } catch (ErrnoException ex) { |
| 328 | throw new RuntimeException("Failed to restore root", ex); |
| 329 | } |
Elliott Hughes | 26b56e6 | 2014-12-17 12:28:29 -0800 | [diff] [blame] | 330 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 331 | } |
| 332 | } |
| 333 | |
| 334 | /** |
| 335 | * Load in commonly used resources, so they can be shared across |
| 336 | * processes. |
| 337 | * |
| 338 | * These tend to be a few Kbytes, but are frequently in the 20-40K |
| 339 | * range, and occasionally even larger. |
| 340 | */ |
| 341 | private static void preloadResources() { |
| 342 | final VMRuntime runtime = VMRuntime.getRuntime(); |
Bob Lee | e540833 | 2009-09-04 18:31:17 -0700 | [diff] [blame] | 343 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 344 | try { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 345 | mResources = Resources.getSystem(); |
| 346 | mResources.startPreloading(); |
| 347 | if (PRELOAD_RESOURCES) { |
| 348 | Log.i(TAG, "Preloading resources..."); |
| 349 | |
| 350 | long startTime = SystemClock.uptimeMillis(); |
| 351 | TypedArray ar = mResources.obtainTypedArray( |
| 352 | com.android.internal.R.array.preloaded_drawables); |
Filip Gruszczynski | 811dc3b | 2015-11-23 12:34:22 -0800 | [diff] [blame] | 353 | int N = preloadDrawables(ar); |
Jeff Brown | 14577c4 | 2012-03-08 16:40:14 -0800 | [diff] [blame] | 354 | ar.recycle(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 355 | Log.i(TAG, "...preloaded " + N + " resources in " |
| 356 | + (SystemClock.uptimeMillis()-startTime) + "ms."); |
| 357 | |
| 358 | startTime = SystemClock.uptimeMillis(); |
| 359 | ar = mResources.obtainTypedArray( |
| 360 | com.android.internal.R.array.preloaded_color_state_lists); |
Filip Gruszczynski | 811dc3b | 2015-11-23 12:34:22 -0800 | [diff] [blame] | 361 | N = preloadColorStateLists(ar); |
Jeff Brown | 14577c4 | 2012-03-08 16:40:14 -0800 | [diff] [blame] | 362 | ar.recycle(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 363 | Log.i(TAG, "...preloaded " + N + " resources in " |
| 364 | + (SystemClock.uptimeMillis()-startTime) + "ms."); |
Filip Gruszczynski | 811dc3b | 2015-11-23 12:34:22 -0800 | [diff] [blame] | 365 | |
| 366 | if (mResources.getBoolean( |
| 367 | com.android.internal.R.bool.config_freeformWindowManagement)) { |
| 368 | startTime = SystemClock.uptimeMillis(); |
| 369 | ar = mResources.obtainTypedArray( |
| 370 | com.android.internal.R.array.preloaded_freeform_multi_window_drawables); |
| 371 | N = preloadDrawables(ar); |
| 372 | ar.recycle(); |
| 373 | Log.i(TAG, "...preloaded " + N + " resource in " |
| 374 | + (SystemClock.uptimeMillis() - startTime) + "ms."); |
| 375 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 376 | } |
| 377 | mResources.finishPreloading(); |
| 378 | } catch (RuntimeException e) { |
| 379 | Log.w(TAG, "Failure preloading resources", e); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 380 | } |
| 381 | } |
| 382 | |
Filip Gruszczynski | 811dc3b | 2015-11-23 12:34:22 -0800 | [diff] [blame] | 383 | private static int preloadColorStateLists(TypedArray ar) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 384 | int N = ar.length(); |
| 385 | for (int i=0; i<N; i++) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 386 | int id = ar.getResourceId(i, 0); |
Joe Onorato | 43a1765 | 2011-04-06 19:22:23 -0700 | [diff] [blame] | 387 | if (false) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 388 | Log.v(TAG, "Preloading resource #" + Integer.toHexString(id)); |
| 389 | } |
| 390 | if (id != 0) { |
Alan Viverette | 77bb6f1 | 2015-02-11 17:24:33 -0800 | [diff] [blame] | 391 | if (mResources.getColorStateList(id, null) == null) { |
Dianne Hackborn | dde331c | 2012-08-03 14:01:57 -0700 | [diff] [blame] | 392 | throw new IllegalArgumentException( |
| 393 | "Unable to find preloaded color resource #0x" |
| 394 | + Integer.toHexString(id) |
| 395 | + " (" + ar.getString(i) + ")"); |
| 396 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 397 | } |
| 398 | } |
| 399 | return N; |
| 400 | } |
| 401 | |
| 402 | |
Filip Gruszczynski | 811dc3b | 2015-11-23 12:34:22 -0800 | [diff] [blame] | 403 | private static int preloadDrawables(TypedArray ar) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 404 | int N = ar.length(); |
| 405 | for (int i=0; i<N; i++) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 406 | int id = ar.getResourceId(i, 0); |
Joe Onorato | 43a1765 | 2011-04-06 19:22:23 -0700 | [diff] [blame] | 407 | if (false) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 408 | Log.v(TAG, "Preloading resource #" + Integer.toHexString(id)); |
| 409 | } |
| 410 | if (id != 0) { |
Alan Viverette | 84e001a | 2014-09-22 00:04:22 -0700 | [diff] [blame] | 411 | if (mResources.getDrawable(id, null) == null) { |
Dianne Hackborn | dde331c | 2012-08-03 14:01:57 -0700 | [diff] [blame] | 412 | throw new IllegalArgumentException( |
| 413 | "Unable to find preloaded drawable resource #0x" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 414 | + Integer.toHexString(id) |
Dianne Hackborn | dde331c | 2012-08-03 14:01:57 -0700 | [diff] [blame] | 415 | + " (" + ar.getString(i) + ")"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | } |
| 419 | return N; |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * Runs several special GCs to try to clean up a few generations of |
| 424 | * softly- and final-reachable objects, along with any other garbage. |
| 425 | * This is only useful just before a fork(). |
| 426 | */ |
Mathieu Chartier | 9a88f10 | 2014-08-20 10:24:11 -0700 | [diff] [blame] | 427 | /*package*/ static void gcAndFinalize() { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 428 | final VMRuntime runtime = VMRuntime.getRuntime(); |
| 429 | |
| 430 | /* runFinalizationSync() lets finalizers be called in Zygote, |
| 431 | * which doesn't have a HeapWorker thread. |
| 432 | */ |
Brian Carlstrom | 08065b9 | 2011-04-01 15:49:41 -0700 | [diff] [blame] | 433 | System.gc(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 434 | runtime.runFinalizationSync(); |
Brian Carlstrom | 08065b9 | 2011-04-01 15:49:41 -0700 | [diff] [blame] | 435 | System.gc(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | /** |
| 439 | * Finish remaining work for the newly forked system server process. |
| 440 | */ |
| 441 | private static void handleSystemServerProcess( |
| 442 | ZygoteConnection.Arguments parsedArgs) |
| 443 | throws ZygoteInit.MethodAndArgsCaller { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 444 | |
| 445 | closeServerSocket(); |
| 446 | |
Mike Lockwood | 90960e8 | 2010-08-06 09:15:25 -0400 | [diff] [blame] | 447 | // set umask to 0077 so new files and directories will default to owner-only permissions. |
Elliott Hughes | 860c591 | 2014-04-28 19:19:13 -0700 | [diff] [blame] | 448 | Os.umask(S_IRWXG | S_IRWXO); |
Mike Lockwood | 90960e8 | 2010-08-06 09:15:25 -0400 | [diff] [blame] | 449 | |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 450 | if (parsedArgs.niceName != null) { |
| 451 | Process.setArgV0(parsedArgs.niceName); |
| 452 | } |
| 453 | |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 454 | final String systemServerClasspath = Os.getenv("SYSTEMSERVERCLASSPATH"); |
| 455 | if (systemServerClasspath != null) { |
| 456 | performSystemServerDexOpt(systemServerClasspath); |
| 457 | } |
| 458 | |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 459 | if (parsedArgs.invokeWith != null) { |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 460 | String[] args = parsedArgs.remainingArgs; |
| 461 | // If we have a non-null system server class path, we'll have to duplicate the |
| 462 | // existing arguments and append the classpath to it. ART will handle the classpath |
| 463 | // correctly when we exec a new process. |
| 464 | if (systemServerClasspath != null) { |
| 465 | String[] amendedArgs = new String[args.length + 2]; |
| 466 | amendedArgs[0] = "-cp"; |
| 467 | amendedArgs[1] = systemServerClasspath; |
| 468 | System.arraycopy(parsedArgs.remainingArgs, 0, amendedArgs, 2, parsedArgs.remainingArgs.length); |
| 469 | } |
| 470 | |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 471 | WrapperInit.execApplication(parsedArgs.invokeWith, |
Elliott Hughes | e1dfcb7 | 2011-07-08 11:08:07 -0700 | [diff] [blame] | 472 | parsedArgs.niceName, parsedArgs.targetSdkVersion, |
Narayan Kamath | 37ad4b0 | 2015-01-19 16:05:24 +0000 | [diff] [blame] | 473 | VMRuntime.getCurrentInstructionSet(), null, args); |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 474 | } else { |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 475 | ClassLoader cl = null; |
| 476 | if (systemServerClasspath != null) { |
| 477 | cl = new PathClassLoader(systemServerClasspath, ClassLoader.getSystemClassLoader()); |
| 478 | Thread.currentThread().setContextClassLoader(cl); |
| 479 | } |
| 480 | |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 481 | /* |
| 482 | * Pass the remaining arguments to SystemServer. |
| 483 | */ |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 484 | RuntimeInit.zygoteInit(parsedArgs.targetSdkVersion, parsedArgs.remainingArgs, cl); |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 485 | } |
| 486 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 487 | /* should never reach here */ |
| 488 | } |
| 489 | |
| 490 | /** |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 491 | * Performs dex-opt on the elements of {@code classPath}, if needed. We |
| 492 | * choose the instruction set of the current runtime. |
| 493 | */ |
| 494 | private static void performSystemServerDexOpt(String classPath) { |
| 495 | final String[] classPathElements = classPath.split(":"); |
| 496 | final InstallerConnection installer = new InstallerConnection(); |
Makoto Onuki | c8a2cfe | 2015-06-23 16:33:48 -0700 | [diff] [blame] | 497 | installer.waitForConnection(); |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 498 | final String instructionSet = VMRuntime.getRuntime().vmInstructionSet(); |
| 499 | |
| 500 | try { |
| 501 | for (String classPathElement : classPathElements) { |
Richard Uhler | 7b08b35 | 2015-03-25 16:25:57 -0700 | [diff] [blame] | 502 | final int dexoptNeeded = DexFile.getDexOptNeeded( |
| 503 | classPathElement, "*", instructionSet, false /* defer */); |
| 504 | if (dexoptNeeded != DexFile.NO_DEXOPT_NEEDED) { |
Calin Juravle | db4a79a | 2015-12-23 18:55:08 +0200 | [diff] [blame] | 505 | // System server is fully AOTed and never profiled |
| 506 | // for profile guided compilation. |
Todd Kennedy | fa54ab7 | 2015-09-25 07:46:12 -0700 | [diff] [blame] | 507 | installer.dexopt(classPathElement, Process.SYSTEM_UID, instructionSet, |
Calin Juravle | db4a79a | 2015-12-23 18:55:08 +0200 | [diff] [blame] | 508 | dexoptNeeded, 0 /*dexFlags*/, null /*volumeUuid*/, |
| 509 | false /*useProfiles*/); |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 510 | } |
| 511 | } |
Jeff Sharkey | fdeeeea | 2016-01-11 17:34:24 -0700 | [diff] [blame] | 512 | } catch (IOException | InstallerException e) { |
| 513 | throw new RuntimeException("Error starting system_server", e); |
Narayan Kamath | 29564cd | 2014-08-07 10:57:40 +0100 | [diff] [blame] | 514 | } finally { |
| 515 | installer.disconnect(); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 520 | * Prepare the arguments and fork for the system server process. |
| 521 | */ |
Narayan Kamath | 64cd907 | 2014-05-13 13:35:14 +0100 | [diff] [blame] | 522 | private static boolean startSystemServer(String abiList, String socketName) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 523 | throws MethodAndArgsCaller, RuntimeException { |
Alex Klyubin | 48a06e7 | 2013-04-19 10:01:42 -0700 | [diff] [blame] | 524 | long capabilities = posixCapabilitiesAsBits( |
| 525 | OsConstants.CAP_KILL, |
| 526 | OsConstants.CAP_NET_ADMIN, |
| 527 | OsConstants.CAP_NET_BIND_SERVICE, |
| 528 | OsConstants.CAP_NET_BROADCAST, |
| 529 | OsConstants.CAP_NET_RAW, |
Alex Klyubin | 48a06e7 | 2013-04-19 10:01:42 -0700 | [diff] [blame] | 530 | OsConstants.CAP_SYS_MODULE, |
| 531 | OsConstants.CAP_SYS_NICE, |
| 532 | OsConstants.CAP_SYS_RESOURCE, |
| 533 | OsConstants.CAP_SYS_TIME, |
| 534 | OsConstants.CAP_SYS_TTY_CONFIG |
| 535 | ); |
Luis Hector Chavez | 5dd239a | 2015-10-06 14:01:45 -0700 | [diff] [blame] | 536 | /* Containers run without this capability, so avoid setting it in that case */ |
| 537 | if (!SystemProperties.getBoolean(PROPERTY_RUNNING_IN_CONTAINER, false)) { |
| 538 | capabilities |= posixCapabilitiesAsBits(OsConstants.CAP_BLOCK_SUSPEND); |
| 539 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 540 | /* Hardcoded command line to start the system server */ |
| 541 | String args[] = { |
| 542 | "--setuid=1000", |
| 543 | "--setgid=1000", |
Pavlin Radoslavov | 7016625 | 2015-11-23 17:13:25 -0800 | [diff] [blame] | 544 | "--setgroups=1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,1018,1021,1032,3001,3002,3003,3006,3007,3009,3010", |
Alex Klyubin | 48a06e7 | 2013-04-19 10:01:42 -0700 | [diff] [blame] | 545 | "--capabilities=" + capabilities + "," + capabilities, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 546 | "--nice-name=system_server", |
Narayan Kamath | b6b044a | 2015-02-13 17:31:25 +0000 | [diff] [blame] | 547 | "--runtime-args", |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 548 | "com.android.server.SystemServer", |
| 549 | }; |
| 550 | ZygoteConnection.Arguments parsedArgs = null; |
| 551 | |
| 552 | int pid; |
| 553 | |
| 554 | try { |
| 555 | parsedArgs = new ZygoteConnection.Arguments(args); |
Jeff Brown | ebed7d6 | 2011-05-16 17:08:42 -0700 | [diff] [blame] | 556 | ZygoteConnection.applyDebuggerSystemProperty(parsedArgs); |
| 557 | ZygoteConnection.applyInvokeWithSystemProperty(parsedArgs); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 558 | |
| 559 | /* Request to fork the system server process */ |
| 560 | pid = Zygote.forkSystemServer( |
| 561 | parsedArgs.uid, parsedArgs.gid, |
Elliott Hughes | e1dfcb7 | 2011-07-08 11:08:07 -0700 | [diff] [blame] | 562 | parsedArgs.gids, |
| 563 | parsedArgs.debugFlags, |
| 564 | null, |
Andy McFadden | 1b4c796 | 2010-10-27 11:26:05 -0700 | [diff] [blame] | 565 | parsedArgs.permittedCapabilities, |
| 566 | parsedArgs.effectiveCapabilities); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 567 | } catch (IllegalArgumentException ex) { |
| 568 | throw new RuntimeException(ex); |
Bob Lee | e540833 | 2009-09-04 18:31:17 -0700 | [diff] [blame] | 569 | } |
| 570 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 571 | /* For child process */ |
| 572 | if (pid == 0) { |
Narayan Kamath | 64cd907 | 2014-05-13 13:35:14 +0100 | [diff] [blame] | 573 | if (hasSecondZygote(abiList)) { |
| 574 | waitForSecondaryZygote(socketName); |
| 575 | } |
| 576 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 577 | handleSystemServerProcess(parsedArgs); |
| 578 | } |
| 579 | |
| 580 | return true; |
| 581 | } |
| 582 | |
Alex Klyubin | 48a06e7 | 2013-04-19 10:01:42 -0700 | [diff] [blame] | 583 | /** |
| 584 | * Gets the bit array representation of the provided list of POSIX capabilities. |
| 585 | */ |
| 586 | private static long posixCapabilitiesAsBits(int... capabilities) { |
| 587 | long result = 0; |
| 588 | for (int capability : capabilities) { |
| 589 | if ((capability < 0) || (capability > OsConstants.CAP_LAST_CAP)) { |
| 590 | throw new IllegalArgumentException(String.valueOf(capability)); |
| 591 | } |
| 592 | result |= (1L << capability); |
| 593 | } |
| 594 | return result; |
| 595 | } |
| 596 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 597 | public static void main(String argv[]) { |
| 598 | try { |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 599 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "ZygoteInit"); |
| 600 | RuntimeInit.enableDdms(); |
| 601 | // Start profiling the zygote initialization. |
| 602 | SamplingProfilerIntegration.start(); |
| 603 | |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 604 | boolean startSystemServer = false; |
| 605 | String socketName = "zygote"; |
| 606 | String abiList = null; |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 607 | for (int i = 1; i < argv.length; i++) { |
| 608 | if ("start-system-server".equals(argv[i])) { |
| 609 | startSystemServer = true; |
| 610 | } else if (argv[i].startsWith(ABI_LIST_ARG)) { |
| 611 | abiList = argv[i].substring(ABI_LIST_ARG.length()); |
| 612 | } else if (argv[i].startsWith(SOCKET_NAME_ARG)) { |
| 613 | socketName = argv[i].substring(SOCKET_NAME_ARG.length()); |
| 614 | } else { |
| 615 | throw new RuntimeException("Unknown command line argument: " + argv[i]); |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 616 | } |
| 617 | } |
| 618 | |
Yasuhiro Matsuda | 25878b2 | 2015-09-03 16:18:21 +0900 | [diff] [blame] | 619 | if (abiList == null) { |
| 620 | throw new RuntimeException("No ABI list supplied."); |
| 621 | } |
| 622 | |
| 623 | registerZygoteSocket(socketName); |
| 624 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "ZygotePreload"); |
| 625 | EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_START, |
| 626 | SystemClock.uptimeMillis()); |
| 627 | preload(); |
| 628 | EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_END, |
| 629 | SystemClock.uptimeMillis()); |
| 630 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
| 631 | |
| 632 | // Finish profiling the zygote initialization. |
| 633 | SamplingProfilerIntegration.writeZygoteSnapshot(); |
| 634 | |
| 635 | // Do an initial gc to clean up after startup |
| 636 | Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PostZygoteInitGC"); |
| 637 | gcAndFinalize(); |
| 638 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
| 639 | |
| 640 | Trace.traceEnd(Trace.TRACE_TAG_DALVIK); |
| 641 | |
Jamie Gennis | 6ad0452 | 2013-04-15 18:53:24 -0700 | [diff] [blame] | 642 | // Disable tracing so that forked processes do not inherit stale tracing tags from |
| 643 | // Zygote. |
| 644 | Trace.setTracingEnabled(false); |
| 645 | |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 646 | if (startSystemServer) { |
Narayan Kamath | 64cd907 | 2014-05-13 13:35:14 +0100 | [diff] [blame] | 647 | startSystemServer(abiList, socketName); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | Log.i(TAG, "Accepting command socket connections"); |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 651 | runSelectLoop(abiList); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 652 | |
| 653 | closeServerSocket(); |
| 654 | } catch (MethodAndArgsCaller caller) { |
| 655 | caller.run(); |
| 656 | } catch (RuntimeException ex) { |
| 657 | Log.e(TAG, "Zygote died with exception", ex); |
| 658 | closeServerSocket(); |
| 659 | throw ex; |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | /** |
Narayan Kamath | 64cd907 | 2014-05-13 13:35:14 +0100 | [diff] [blame] | 664 | * Return {@code true} if this device configuration has another zygote. |
| 665 | * |
| 666 | * We determine this by comparing the device ABI list with this zygotes |
| 667 | * list. If this zygote supports all ABIs this device supports, there won't |
| 668 | * be another zygote. |
| 669 | */ |
| 670 | private static boolean hasSecondZygote(String abiList) { |
| 671 | return !SystemProperties.get("ro.product.cpu.abilist").equals(abiList); |
| 672 | } |
| 673 | |
| 674 | private static void waitForSecondaryZygote(String socketName) { |
| 675 | String otherZygoteName = Process.ZYGOTE_SOCKET.equals(socketName) ? |
| 676 | Process.SECONDARY_ZYGOTE_SOCKET : Process.ZYGOTE_SOCKET; |
| 677 | while (true) { |
| 678 | try { |
| 679 | final Process.ZygoteState zs = Process.ZygoteState.connect(otherZygoteName); |
| 680 | zs.close(); |
| 681 | break; |
| 682 | } catch (IOException ioe) { |
| 683 | Log.w(TAG, "Got error connecting to zygote, retrying. msg= " + ioe.getMessage()); |
| 684 | } |
| 685 | |
| 686 | try { |
| 687 | Thread.sleep(1000); |
| 688 | } catch (InterruptedException ie) { |
| 689 | } |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 694 | * Runs the zygote process's select loop. Accepts new connections as |
| 695 | * they happen, and reads commands from connections one spawn-request's |
| 696 | * worth at a time. |
| 697 | * |
| 698 | * @throws MethodAndArgsCaller in a child process when a main() should |
| 699 | * be executed. |
| 700 | */ |
Narayan Kamath | c41638c | 2014-04-07 13:56:15 +0100 | [diff] [blame] | 701 | private static void runSelectLoop(String abiList) throws MethodAndArgsCaller { |
Nick Kralevich | cae3d9f | 2013-01-30 09:51:40 -0800 | [diff] [blame] | 702 | ArrayList<FileDescriptor> fds = new ArrayList<FileDescriptor>(); |
| 703 | ArrayList<ZygoteConnection> peers = new ArrayList<ZygoteConnection>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 704 | |
| 705 | fds.add(sServerSocket.getFileDescriptor()); |
| 706 | peers.add(null); |
| 707 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 708 | while (true) { |
Elliott Hughes | 894724b | 2014-12-15 12:39:51 -0800 | [diff] [blame] | 709 | StructPollfd[] pollFds = new StructPollfd[fds.size()]; |
| 710 | for (int i = 0; i < pollFds.length; ++i) { |
| 711 | pollFds[i] = new StructPollfd(); |
| 712 | pollFds[i].fd = fds.get(i); |
| 713 | pollFds[i].events = (short) POLLIN; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 714 | } |
Elliott Hughes | 894724b | 2014-12-15 12:39:51 -0800 | [diff] [blame] | 715 | try { |
| 716 | Os.poll(pollFds, -1); |
| 717 | } catch (ErrnoException ex) { |
| 718 | throw new RuntimeException("poll failed", ex); |
| 719 | } |
| 720 | for (int i = pollFds.length - 1; i >= 0; --i) { |
| 721 | if ((pollFds[i].revents & POLLIN) == 0) { |
| 722 | continue; |
| 723 | } |
| 724 | if (i == 0) { |
| 725 | ZygoteConnection newPeer = acceptCommandPeer(abiList); |
| 726 | peers.add(newPeer); |
| 727 | fds.add(newPeer.getFileDesciptor()); |
| 728 | } else { |
| 729 | boolean done = peers.get(i).runOnce(); |
| 730 | if (done) { |
| 731 | peers.remove(i); |
| 732 | fds.remove(i); |
| 733 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 734 | } |
| 735 | } |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 740 | * Class not instantiable. |
| 741 | */ |
| 742 | private ZygoteInit() { |
| 743 | } |
| 744 | |
| 745 | /** |
| 746 | * Helper exception class which holds a method and arguments and |
| 747 | * can call them. This is used as part of a trampoline to get rid of |
| 748 | * the initial process setup stack frames. |
| 749 | */ |
| 750 | public static class MethodAndArgsCaller extends Exception |
| 751 | implements Runnable { |
| 752 | /** method to call */ |
| 753 | private final Method mMethod; |
| 754 | |
| 755 | /** argument array */ |
| 756 | private final String[] mArgs; |
| 757 | |
| 758 | public MethodAndArgsCaller(Method method, String[] args) { |
| 759 | mMethod = method; |
| 760 | mArgs = args; |
| 761 | } |
| 762 | |
| 763 | public void run() { |
| 764 | try { |
| 765 | mMethod.invoke(null, new Object[] { mArgs }); |
| 766 | } catch (IllegalAccessException ex) { |
| 767 | throw new RuntimeException(ex); |
| 768 | } catch (InvocationTargetException ex) { |
| 769 | Throwable cause = ex.getCause(); |
| 770 | if (cause instanceof RuntimeException) { |
| 771 | throw (RuntimeException) cause; |
| 772 | } else if (cause instanceof Error) { |
| 773 | throw (Error) cause; |
| 774 | } |
| 775 | throw new RuntimeException(ex); |
| 776 | } |
| 777 | } |
| 778 | } |
| 779 | } |