Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 844af86b authored by Justin Weir's avatar Justin Weir Committed by Automerger Merge Worker
Browse files

Merge "Ensure log buffers are dumped to file on uncaught exceptions" into tm-dev am: b41c2879 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17915248



Change-Id: I77c291c1e03e171e5f7bba464feca3930bcf8764
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 1f788888 b41c2879

packages/SystemUI/shared/src/com/android/systemui/shared/plugins/PluginManagerImpl.java

+4 −19
Original line number Diff line number Diff line
@@ -31,13 +31,13 @@ import android.widget.Toast; 
import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;

import com.android.systemui.plugins.Plugin;

import com.android.systemui.plugins.PluginListener;

import com.android.systemui.shared.system.UncaughtExceptionPreHandlerManager;



import java.io.FileDescriptor;

import java.io.PrintWriter;

import java.lang.Thread.UncaughtExceptionHandler;

import java.util.List;

import java.util.Map;

import java.util.Optional;



/**

 * @see Plugin
@@ -61,7 +61,7 @@ public class PluginManagerImpl extends BroadcastReceiver implements PluginManage 
    public PluginManagerImpl(Context context,

            PluginActionManager.Factory actionManagerFactory,

            boolean debuggable,

            Optional<UncaughtExceptionHandler> defaultHandlerOptional,

            UncaughtExceptionPreHandlerManager preHandlerManager,

            PluginEnabler pluginEnabler,

            PluginPrefs pluginPrefs,

            List<String> privilegedPlugins) {
@@ -72,9 +72,7 @@ public class PluginManagerImpl extends BroadcastReceiver implements PluginManage 
        mPluginPrefs = pluginPrefs;

        mPluginEnabler = pluginEnabler;



        PluginExceptionHandler uncaughtExceptionHandler = new PluginExceptionHandler(

                defaultHandlerOptional);

        Thread.setUncaughtExceptionPreHandler(uncaughtExceptionHandler);

        preHandlerManager.registerHandler(new PluginExceptionHandler());

    }



    public boolean isDebuggable() {
@@ -266,20 +264,12 @@ public class PluginManagerImpl extends BroadcastReceiver implements PluginManage 
    }



    private class PluginExceptionHandler implements UncaughtExceptionHandler {

        private final Optional<UncaughtExceptionHandler> mExceptionHandlerOptional;



        private PluginExceptionHandler(

                Optional<UncaughtExceptionHandler> exceptionHandlerOptional) {

            mExceptionHandlerOptional = exceptionHandlerOptional;

        }

        private PluginExceptionHandler() {}



        @Override

        public void uncaughtException(Thread thread, Throwable throwable) {

            if (SystemProperties.getBoolean("plugin.debugging", false)) {

                Throwable finalThrowable = throwable;

                mExceptionHandlerOptional.ifPresent(

                        handler -> handler.uncaughtException(thread, finalThrowable));



                return;

            }

            // Search for and disable plugins that may have been involved in this crash.
@@ -297,11 +287,6 @@ public class PluginManagerImpl extends BroadcastReceiver implements PluginManage 
            if (disabledAny) {

                throwable = new CrashWhilePluginActiveException(throwable);

            }



            // Run the normal exception handler so we can crash and cleanup our state.

            Throwable finalThrowable = throwable;

            mExceptionHandlerOptional.ifPresent(

                    handler -> handler.uncaughtException(thread, finalThrowable));

        }



        private boolean checkStack(Throwable throwable) {

packages/SystemUI/shared/src/com/android/systemui/shared/system/UncaughtExceptionPreHandlerManager.kt

0 → 100644
+71 −0
Original line number Diff line number Diff line 
package com.android.systemui.shared.system



import android.util.Log

import java.lang.Thread.UncaughtExceptionHandler

import java.util.concurrent.CopyOnWriteArrayList

import javax.inject.Inject

import javax.inject.Singleton



/**

 * Sets the global (static var in Thread) uncaught exception pre-handler to an implementation that

 * delegates to each item in a list of registered UncaughtExceptionHandlers.

 */

@Singleton

class UncaughtExceptionPreHandlerManager @Inject constructor() {

    private val handlers: MutableList<UncaughtExceptionHandler> = CopyOnWriteArrayList()

    private val globalUncaughtExceptionPreHandler = GlobalUncaughtExceptionHandler()



    /**

     * Adds an exception pre-handler to the list of handlers. If this has not yet set the global

     * (static var in Thread) uncaught exception pre-handler yet, it will do so.

     */

    fun registerHandler(handler: UncaughtExceptionHandler) {

        checkGlobalHandlerSetup()

        addHandler(handler)

    }



    /**

     * Verifies that the global handler is set in Thread. If not, sets is up.

     */

    private fun checkGlobalHandlerSetup() {

        val currentHandler = Thread.getUncaughtExceptionPreHandler()

        if (currentHandler != globalUncaughtExceptionPreHandler) {

            if (currentHandler is GlobalUncaughtExceptionHandler) {

                throw IllegalStateException("Two UncaughtExceptionPreHandlerManagers created")

            }

            currentHandler?.let { addHandler(it) }

            Thread.setUncaughtExceptionPreHandler(globalUncaughtExceptionPreHandler)

        }

    }



    /**

     * Adds a handler if it has not already been added, preserving order.

     */

    private fun addHandler(it: UncaughtExceptionHandler) {

        if (it !in handlers) {

            handlers.add(it)

        }

    }



    /**

     * Calls uncaughtException on all registered handlers, catching and logging any new exceptions.

     */

    fun handleUncaughtException(thread: Thread?, throwable: Throwable?) {

        for (handler in handlers) {

            try {

                handler.uncaughtException(thread, throwable)

            } catch (e: Exception) {

                Log.wtf("Uncaught exception pre-handler error", e)

            }

        }

    }



    /**

     * UncaughtExceptionHandler impl that will be set as Thread's pre-handler static variable.

     */

    inner class GlobalUncaughtExceptionHandler : UncaughtExceptionHandler {

        override fun uncaughtException(thread: Thread?, throwable: Throwable?) {

            handleUncaughtException(thread, throwable)

        }

    }

}
 
 No newline at end of file

packages/SystemUI/src/com/android/systemui/SystemUIService.java

+1 −0
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ public class SystemUIService extends Service { 


        // Finish initializing dump logic

        mLogBufferFreezer.attach(mBroadcastDispatcher);

        mDumpHandler.init();



        // If configured, set up a battery notification

        if (getResources().getBoolean(R.bool.config_showNotificationForUnknownBatteryState)) {

packages/SystemUI/src/com/android/systemui/dump/DumpHandler.kt

+14 −1
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ import com.android.systemui.dump.DumpHandler.Companion.PRIORITY_ARG_CRITICAL 
import com.android.systemui.dump.DumpHandler.Companion.PRIORITY_ARG_HIGH

import com.android.systemui.dump.DumpHandler.Companion.PRIORITY_ARG_NORMAL

import com.android.systemui.log.LogBuffer

import com.android.systemui.shared.system.UncaughtExceptionPreHandlerManager

import java.io.PrintWriter

import javax.inject.Inject

import javax.inject.Provider
@@ -82,8 +83,20 @@ class DumpHandler @Inject constructor( 
    private val context: Context,

    private val dumpManager: DumpManager,

    private val logBufferEulogizer: LogBufferEulogizer,

    private val startables: MutableMap<Class<*>, Provider<CoreStartable>>

    private val startables: MutableMap<Class<*>, Provider<CoreStartable>>,

    private val uncaughtExceptionPreHandlerManager: UncaughtExceptionPreHandlerManager

) {

    /**

     * Registers an uncaught exception handler

     */

    fun init() {

        uncaughtExceptionPreHandlerManager.registerHandler { _, e ->

            if (e is Exception) {

                logBufferEulogizer.record(e)

            }

        }

    }



    /**

     * Dump the diagnostics! Behavior can be controlled via [args].

     */

packages/SystemUI/src/com/android/systemui/plugins/PluginsModule.java

+3 −6
Original line number Diff line number Diff line
@@ -16,8 +16,6 @@ 


package com.android.systemui.plugins;



import static com.android.systemui.util.concurrency.GlobalConcurrencyModule.PRE_HANDLER;



import android.app.NotificationManager;

import android.content.Context;

import android.content.pm.PackageManager;
@@ -32,12 +30,12 @@ import com.android.systemui.shared.plugins.PluginInstance; 
import com.android.systemui.shared.plugins.PluginManager;

import com.android.systemui.shared.plugins.PluginManagerImpl;

import com.android.systemui.shared.plugins.PluginPrefs;

import com.android.systemui.shared.system.UncaughtExceptionPreHandlerManager;

import com.android.systemui.util.concurrency.GlobalConcurrencyModule;

import com.android.systemui.util.concurrency.ThreadFactory;



import java.util.Arrays;

import java.util.List;

import java.util.Optional;

import java.util.concurrent.Executor;



import javax.inject.Named;
@@ -107,13 +105,12 @@ public abstract class PluginsModule { 
            Context context,

            PluginActionManager.Factory instanceManagerFactory,

            @Named(PLUGIN_DEBUG) boolean debug,

            @Named(PRE_HANDLER)

                    Optional<Thread.UncaughtExceptionHandler> uncaughtExceptionHandlerOptional,

            UncaughtExceptionPreHandlerManager preHandlerManager,

            PluginEnabler pluginEnabler,

            PluginPrefs pluginPrefs,

            @Named(PLUGIN_PRIVILEGED) List<String> privilegedPlugins) {

        return new PluginManagerImpl(context, instanceManagerFactory, debug,

                uncaughtExceptionHandlerOptional, pluginEnabler, pluginPrefs,

                preHandlerManager, pluginEnabler, pluginPrefs,

                privilegedPlugins);

    }