| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.internal.os; |
| |
| import android.app.ActivityManager; |
| import android.app.ActivityThread; |
| import android.app.ApplicationErrorReport; |
| import android.os.Build; |
| import android.os.DeadObjectException; |
| import android.os.Debug; |
| import android.os.IBinder; |
| import android.os.Process; |
| import android.os.SystemProperties; |
| import android.os.Trace; |
| import android.util.Log; |
| import android.util.Slog; |
| import com.android.internal.logging.AndroidConfig; |
| import com.android.server.NetworkManagementSocketTagger; |
| import dalvik.system.VMRuntime; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.TimeZone; |
| import java.util.logging.LogManager; |
| import org.apache.harmony.luni.internal.util.TimezoneGetter; |
| |
| /** |
| * Main entry point for runtime initialization. Not for |
| * public consumption. |
| * @hide |
| */ |
| public class RuntimeInit { |
| private final static String TAG = "AndroidRuntime"; |
| private final static boolean DEBUG = false; |
| |
| /** true if commonInit() has been called */ |
| private static boolean initialized; |
| |
| private static IBinder mApplicationObject; |
| |
| private static volatile boolean mCrashing = false; |
| |
| private static final native void nativeZygoteInit(); |
| private static final native void nativeFinishInit(); |
| private static final native void nativeSetExitWithoutCleanup(boolean exitWithoutCleanup); |
| |
| private static int Clog_e(String tag, String msg, Throwable tr) { |
| return Log.printlns(Log.LOG_ID_CRASH, Log.ERROR, tag, msg, tr); |
| } |
| |
| /** |
| * Logs a message when a thread encounters an uncaught exception. By |
| * default, {@link KillApplicationHandler} will terminate this process later, |
| * but apps can override that behavior. |
| */ |
| private static class LoggingHandler implements Thread.UncaughtExceptionHandler { |
| @Override |
| public void uncaughtException(Thread t, Throwable e) { |
| // Don't re-enter if KillApplicationHandler has already run |
| if (mCrashing) return; |
| if (mApplicationObject == null) { |
| // The "FATAL EXCEPTION" string is still used on Android even though |
| // apps can set a custom UncaughtExceptionHandler that renders uncaught |
| // exceptions non-fatal. |
| Clog_e(TAG, "*** FATAL EXCEPTION IN SYSTEM PROCESS: " + t.getName(), e); |
| } else { |
| StringBuilder message = new StringBuilder(); |
| // The "FATAL EXCEPTION" string is still used on Android even though |
| // apps can set a custom UncaughtExceptionHandler that renders uncaught |
| // exceptions non-fatal. |
| message.append("FATAL EXCEPTION: ").append(t.getName()).append("\n"); |
| final String processName = ActivityThread.currentProcessName(); |
| if (processName != null) { |
| message.append("Process: ").append(processName).append(", "); |
| } |
| message.append("PID: ").append(Process.myPid()); |
| Clog_e(TAG, message.toString(), e); |
| } |
| } |
| } |
| |
| /** |
| * Handle application death from an uncaught exception. The framework |
| * catches these for the main threads, so this should only matter for |
| * threads created by applications. Before this method runs, |
| * {@link LoggingHandler} will already have logged details. |
| */ |
| private static class KillApplicationHandler implements Thread.UncaughtExceptionHandler { |
| public void uncaughtException(Thread t, Throwable e) { |
| try { |
| // Don't re-enter -- avoid infinite loops if crash-reporting crashes. |
| if (mCrashing) return; |
| mCrashing = true; |
| |
| // Try to end profiling. If a profiler is running at this point, and we kill the |
| // process (below), the in-memory buffer will be lost. So try to stop, which will |
| // flush the buffer. (This makes method trace profiling useful to debug crashes.) |
| if (ActivityThread.currentActivityThread() != null) { |
| ActivityThread.currentActivityThread().stopProfiling(); |
| } |
| |
| // Bring up crash dialog, wait for it to be dismissed |
| ActivityManager.getService().handleApplicationCrash( |
| mApplicationObject, new ApplicationErrorReport.ParcelableCrashInfo(e)); |
| } catch (Throwable t2) { |
| if (t2 instanceof DeadObjectException) { |
| // System process is dead; ignore |
| } else { |
| try { |
| Clog_e(TAG, "Error reporting crash", t2); |
| } catch (Throwable t3) { |
| // Even Clog_e() fails! Oh well. |
| } |
| } |
| } finally { |
| // Try everything to make sure this process goes away. |
| Process.killProcess(Process.myPid()); |
| System.exit(10); |
| } |
| } |
| } |
| |
| private static final void commonInit() { |
| if (DEBUG) Slog.d(TAG, "Entered RuntimeInit!"); |
| |
| /* |
| * set handlers; these apply to all threads in the VM. Apps can replace |
| * the default handler, but not the pre handler. |
| */ |
| Thread.setUncaughtExceptionPreHandler(new LoggingHandler()); |
| Thread.setDefaultUncaughtExceptionHandler(new KillApplicationHandler()); |
| |
| /* |
| * Install a TimezoneGetter subclass for ZoneInfo.db |
| */ |
| TimezoneGetter.setInstance(new TimezoneGetter() { |
| @Override |
| public String getId() { |
| return SystemProperties.get("persist.sys.timezone"); |
| } |
| }); |
| TimeZone.setDefault(null); |
| |
| /* |
| * Sets handler for java.util.logging to use Android log facilities. |
| * The odd "new instance-and-then-throw-away" is a mirror of how |
| * the "java.util.logging.config.class" system property works. We |
| * can't use the system property here since the logger has almost |
| * certainly already been initialized. |
| */ |
| LogManager.getLogManager().reset(); |
| new AndroidConfig(); |
| |
| /* |
| * Sets the default HTTP User-Agent used by HttpURLConnection. |
| */ |
| String userAgent = getDefaultUserAgent(); |
| System.setProperty("http.agent", userAgent); |
| |
| /* |
| * Wire socket tagging to traffic stats. |
| */ |
| NetworkManagementSocketTagger.install(); |
| |
| /* |
| * If we're running in an emulator launched with "-trace", put the |
| * VM into emulator trace profiling mode so that the user can hit |
| * F9/F10 at any time to capture traces. This has performance |
| * consequences, so it's not something you want to do always. |
| */ |
| String trace = SystemProperties.get("ro.kernel.android.tracing"); |
| if (trace.equals("1")) { |
| Slog.i(TAG, "NOTE: emulator trace profiling enabled"); |
| Debug.enableEmulatorTraceOutput(); |
| } |
| |
| initialized = true; |
| } |
| |
| /** |
| * Returns an HTTP user agent of the form |
| * "Dalvik/1.1.0 (Linux; U; Android Eclair Build/MASTER)". |
| */ |
| private static String getDefaultUserAgent() { |
| StringBuilder result = new StringBuilder(64); |
| result.append("Dalvik/"); |
| result.append(System.getProperty("java.vm.version")); // such as 1.1.0 |
| result.append(" (Linux; U; Android "); |
| |
| String version = Build.VERSION.RELEASE; // "1.0" or "3.4b5" |
| result.append(version.length() > 0 ? version : "1.0"); |
| |
| // add the model for the release build |
| if ("REL".equals(Build.VERSION.CODENAME)) { |
| String model = Build.MODEL; |
| if (model.length() > 0) { |
| result.append("; "); |
| result.append(model); |
| } |
| } |
| String id = Build.ID; // "MASTER" or "M4-rc20" |
| if (id.length() > 0) { |
| result.append(" Build/"); |
| result.append(id); |
| } |
| result.append(")"); |
| return result.toString(); |
| } |
| |
| /** |
| * Invokes a static "main(argv[]) method on class "className". |
| * Converts various failing exceptions into RuntimeExceptions, with |
| * the assumption that they will then cause the VM instance to exit. |
| * |
| * @param className Fully-qualified class name |
| * @param argv Argument vector for main() |
| * @param classLoader the classLoader to load {@className} with |
| */ |
| private static void invokeStaticMain(String className, String[] argv, ClassLoader classLoader) |
| throws Zygote.MethodAndArgsCaller { |
| Class<?> cl; |
| |
| try { |
| cl = Class.forName(className, true, classLoader); |
| } catch (ClassNotFoundException ex) { |
| throw new RuntimeException( |
| "Missing class when invoking static main " + className, |
| ex); |
| } |
| |
| Method m; |
| try { |
| m = cl.getMethod("main", new Class[] { String[].class }); |
| } catch (NoSuchMethodException ex) { |
| throw new RuntimeException( |
| "Missing static main on " + className, ex); |
| } catch (SecurityException ex) { |
| throw new RuntimeException( |
| "Problem getting static main on " + className, ex); |
| } |
| |
| int modifiers = m.getModifiers(); |
| if (! (Modifier.isStatic(modifiers) && Modifier.isPublic(modifiers))) { |
| throw new RuntimeException( |
| "Main method is not public and static on " + className); |
| } |
| |
| /* |
| * This throw gets caught in ZygoteInit.main(), which responds |
| * by invoking the exception's run() method. This arrangement |
| * clears up all the stack frames that were required in setting |
| * up the process. |
| */ |
| throw new Zygote.MethodAndArgsCaller(m, argv); |
| } |
| |
| public static final void main(String[] argv) { |
| enableDdms(); |
| if (argv.length == 2 && argv[1].equals("application")) { |
| if (DEBUG) Slog.d(TAG, "RuntimeInit: Starting application"); |
| redirectLogStreams(); |
| } else { |
| if (DEBUG) Slog.d(TAG, "RuntimeInit: Starting tool"); |
| } |
| |
| commonInit(); |
| |
| /* |
| * Now that we're running in interpreted code, call back into native code |
| * to run the system. |
| */ |
| nativeFinishInit(); |
| |
| if (DEBUG) Slog.d(TAG, "Leaving RuntimeInit!"); |
| } |
| |
| /** |
| * The main function called when started through the zygote process. This |
| * could be unified with main(), if the native code in nativeFinishInit() |
| * were rationalized with Zygote startup.<p> |
| * |
| * Current recognized args: |
| * <ul> |
| * <li> <code> [--] <start class name> <args> |
| * </ul> |
| * |
| * @param targetSdkVersion target SDK version |
| * @param argv arg strings |
| */ |
| public static final void zygoteInit(int targetSdkVersion, String[] argv, ClassLoader classLoader) |
| throws Zygote.MethodAndArgsCaller { |
| if (DEBUG) Slog.d(TAG, "RuntimeInit: Starting application from zygote"); |
| |
| Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "RuntimeInit"); |
| redirectLogStreams(); |
| |
| commonInit(); |
| nativeZygoteInit(); |
| applicationInit(targetSdkVersion, argv, classLoader); |
| } |
| |
| /** |
| * The main function called when an application is started through a |
| * wrapper process. |
| * |
| * When the wrapper starts, the runtime starts {@link RuntimeInit#main} |
| * which calls {@link WrapperInit#main} which then calls this method. |
| * So we don't need to call commonInit() here. |
| * |
| * @param targetSdkVersion target SDK version |
| * @param argv arg strings |
| */ |
| public static void wrapperInit(int targetSdkVersion, String[] argv) |
| throws Zygote.MethodAndArgsCaller { |
| if (DEBUG) Slog.d(TAG, "RuntimeInit: Starting application from wrapper"); |
| |
| applicationInit(targetSdkVersion, argv, null); |
| } |
| |
| private static void applicationInit(int targetSdkVersion, String[] argv, ClassLoader classLoader) |
| throws Zygote.MethodAndArgsCaller { |
| // If the application calls System.exit(), terminate the process |
| // immediately without running any shutdown hooks. It is not possible to |
| // shutdown an Android application gracefully. Among other things, the |
| // Android runtime shutdown hooks close the Binder driver, which can cause |
| // leftover running threads to crash before the process actually exits. |
| nativeSetExitWithoutCleanup(true); |
| |
| // We want to be fairly aggressive about heap utilization, to avoid |
| // holding on to a lot of memory that isn't needed. |
| VMRuntime.getRuntime().setTargetHeapUtilization(0.75f); |
| VMRuntime.getRuntime().setTargetSdkVersion(targetSdkVersion); |
| |
| final Arguments args; |
| try { |
| args = new Arguments(argv); |
| } catch (IllegalArgumentException ex) { |
| Slog.e(TAG, ex.getMessage()); |
| // let the process exit |
| return; |
| } |
| |
| // The end of of the RuntimeInit event (see #zygoteInit). |
| Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| |
| // Remaining arguments are passed to the start class's static main |
| invokeStaticMain(args.startClass, args.startArgs, classLoader); |
| } |
| |
| /** |
| * Redirect System.out and System.err to the Android log. |
| */ |
| public static void redirectLogStreams() { |
| System.out.close(); |
| System.setOut(new AndroidPrintStream(Log.INFO, "System.out")); |
| System.err.close(); |
| System.setErr(new AndroidPrintStream(Log.WARN, "System.err")); |
| } |
| |
| /** |
| * Report a serious error in the current process. May or may not cause |
| * the process to terminate (depends on system settings). |
| * |
| * @param tag to record with the error |
| * @param t exception describing the error site and conditions |
| */ |
| public static void wtf(String tag, Throwable t, boolean system) { |
| try { |
| if (ActivityManager.getService().handleApplicationWtf( |
| mApplicationObject, tag, system, |
| new ApplicationErrorReport.ParcelableCrashInfo(t))) { |
| // The Activity Manager has already written us off -- now exit. |
| Process.killProcess(Process.myPid()); |
| System.exit(10); |
| } |
| } catch (Throwable t2) { |
| if (t2 instanceof DeadObjectException) { |
| // System process is dead; ignore |
| } else { |
| Slog.e(TAG, "Error reporting WTF", t2); |
| Slog.e(TAG, "Original WTF:", t); |
| } |
| } |
| } |
| |
| /** |
| * Set the object identifying this application/process, for reporting VM |
| * errors. |
| */ |
| public static final void setApplicationObject(IBinder app) { |
| mApplicationObject = app; |
| } |
| |
| public static final IBinder getApplicationObject() { |
| return mApplicationObject; |
| } |
| |
| /** |
| * Enable DDMS. |
| */ |
| static final void enableDdms() { |
| // Register handlers for DDM messages. |
| android.ddm.DdmRegister.registerHandlers(); |
| } |
| |
| /** |
| * Handles argument parsing for args related to the runtime. |
| * |
| * Current recognized args: |
| * <ul> |
| * <li> <code> [--] <start class name> <args> |
| * </ul> |
| */ |
| static class Arguments { |
| /** first non-option argument */ |
| String startClass; |
| |
| /** all following arguments */ |
| String[] startArgs; |
| |
| /** |
| * Constructs instance and parses args |
| * @param args runtime command-line args |
| * @throws IllegalArgumentException |
| */ |
| Arguments(String args[]) throws IllegalArgumentException { |
| parseArgs(args); |
| } |
| |
| /** |
| * Parses the commandline arguments intended for the Runtime. |
| */ |
| private void parseArgs(String args[]) |
| throws IllegalArgumentException { |
| int curArg = 0; |
| for (; curArg < args.length; curArg++) { |
| String arg = args[curArg]; |
| |
| if (arg.equals("--")) { |
| curArg++; |
| break; |
| } else if (!arg.startsWith("--")) { |
| break; |
| } |
| } |
| |
| if (curArg == args.length) { |
| throw new IllegalArgumentException("Missing classname argument to RuntimeInit!"); |
| } |
| |
| startClass = args[curArg++]; |
| startArgs = new String[args.length - curArg]; |
| System.arraycopy(args, curArg, startArgs, 0, startArgs.length); |
| } |
| } |
| } |