Java程序
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/*
* Copyright (C) 2016 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.server.am;
import com.android.internal.app.ProcessMap;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.nano.MetricsProto;
import com.android.internal.os.ProcessCpuTracker;
import com.android.server.RescueParty;
import com.android.server.Watchdog;
import android.app.ActivityManager;
import android.app.ActivityOptions;
import android.app.ActivityThread;
import android.app.AppOpsManager;
import android.app.ApplicationErrorReport;
import android.app.Dialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.net.Uri;
import android.os.Binder;
import android.os.Message;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.provider.Settings;
import android.util.ArrayMap;
import android.util.ArraySet;
import android.util.EventLog;
import android.util.Log;
import android.util.Slog;
import android.util.StatsLog;
import android.util.SparseArray;
import android.util.TimeUtils;
import android.util.proto.ProtoOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Set;
import static com.android.server.Watchdog.NATIVE_STACKS_OF_INTEREST;
import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ANR;
import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
import static com.android.server.am.ActivityManagerService.MY_PID;
import static com.android.server.am.ActivityManagerService.SYSTEM_DEBUGGABLE;
/**
* Controls error conditions in applications.
*/
class AppErrors {
private static final String TAG = TAG_WITH_CLASS_NAME ? "AppErrors" : TAG_AM;
private final ActivityManagerService mService;
private final Context mContext;
private ArraySet<String> mAppsNotReportingCrashes;
/**
* The last time that various processes have crashed since they were last explicitly started.
*/
private final ProcessMap<Long> mProcessCrashTimes = new ProcessMap<>();
/**
* The last time that various processes have crashed (not reset even when explicitly started).
*/
private final ProcessMap<Long> mProcessCrashTimesPersistent = new ProcessMap<>();
/**
* Set of applications that we consider to be bad, and will reject
* incoming broadcasts from (which the user has no control over).
* Processes are added to this set when they have crashed twice within
* a minimum amount of time; they are removed from it when they are
* later restarted (hopefully due to some user action). The value is the
* time it was added to the list.
*/
private final ProcessMap<BadProcessInfo> mBadProcesses = new ProcessMap<>();
AppErrors(Context context, ActivityManagerService service) {
context.assertRuntimeOverlayThemable();
mService = service;
mContext = context;
}
void writeToProto(ProtoOutputStream proto, long fieldId, String dumpPackage) {
if (mProcessCrashTimes.getMap().isEmpty() && mBadProcesses.getMap().isEmpty()) {
return;
}
final long token = proto.start(fieldId);
final long now = SystemClock.uptimeMillis();
proto.write(AppErrorsProto.NOW_UPTIME_MS, now);
if (!mProcessCrashTimes.getMap().isEmpty()) {
final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap();
final int procCount = pmap.size();
for (int ip = 0; ip < procCount; ip++) {
final long ctoken = proto.start(AppErrorsProto.PROCESS_CRASH_TIMES);
final String pname = pmap.keyAt(ip);
final SparseArray<Long> uids = pmap.valueAt(ip);
final int uidCount = uids.size();
proto.write(AppErrorsProto.ProcessCrashTime.PROCESS_NAME, pname);
for (int i = 0; i < uidCount; i++) {
final int puid = uids.keyAt(i);
final ProcessRecord r = mService.mProcessNames.get(pname, puid);
if (dumpPackage != null && (r == null || !r.pkgList.containsKey(dumpPackage))) {
continue;
}
final long etoken = proto.start(AppErrorsProto.ProcessCrashTime.ENTRIES);
proto.write(AppErrorsProto.ProcessCrashTime.Entry.UID, puid);
proto.write(AppErrorsProto.ProcessCrashTime.Entry.LAST_CRASHED_AT_MS,
uids.valueAt(i));
proto.end(etoken);
}
proto.end(ctoken);
}
}
if (!mBadProcesses.getMap().isEmpty()) {
final ArrayMap<String, SparseArray<BadProcessInfo>> pmap = mBadProcesses.getMap();
final int processCount = pmap.size();
for (int ip = 0; ip < processCount; ip++) {
final long btoken = proto.start(AppErrorsProto.BAD_PROCESSES);
final String pname = pmap.keyAt(ip);
final SparseArray<BadProcessInfo> uids = pmap.valueAt(ip);
final int uidCount = uids.size();
proto.write(AppErrorsProto.BadProcess.PROCESS_NAME, pname);
for (int i = 0; i < uidCount; i++) {
final int puid = uids.keyAt(i);
final ProcessRecord r = mService.mProcessNames.get(pname, puid);
if (dumpPackage != null && (r == null
|| !r.pkgList.containsKey(dumpPackage))) {
continue;
}
final BadProcessInfo info = uids.valueAt(i);
final long etoken = proto.start(AppErrorsProto.BadProcess.ENTRIES);
proto.write(AppErrorsProto.BadProcess.Entry.UID, puid);
proto.write(AppErrorsProto.BadProcess.Entry.CRASHED_AT_MS, info.time);
proto.write(AppErrorsProto.BadProcess.Entry.SHORT_MSG, info.shortMsg);
proto.write(AppErrorsProto.BadProcess.Entry.LONG_MSG, info.longMsg);
proto.write(AppErrorsProto.BadProcess.Entry.STACK, info.stack);
proto.end(etoken);
}
proto.end(btoken);
}
}
proto.end(token);
}
boolean dumpLocked(FileDescriptor fd, PrintWriter pw, boolean needSep, String dumpPackage) {
if (!mProcessCrashTimes.getMap().isEmpty()) {
boolean printed = false;
final long now = SystemClock.uptimeMillis();
final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap();
final int processCount = pmap.size();
for (int ip = 0; ip < processCount; ip++) {
final String pname = pmap.keyAt(ip);
final SparseArray<Long> uids = pmap.valueAt(ip);
final int uidCount = uids.size();
for (int i = 0; i < uidCount; i++) {
final int puid = uids.keyAt(i);
final ProcessRecord r = mService.mProcessNames.get(pname, puid);
if (dumpPackage != null && (r == null
|| !r.pkgList.containsKey(dumpPackage))) {
continue;
}
if (!printed) {
if (needSep) pw.println();
needSep = true;
pw.println(" Time since processes crashed:");
printed = true;
}
pw.print(" Process "); pw.print(pname);
pw.print(" uid "); pw.print(puid);
pw.print(": last crashed ");
TimeUtils.formatDuration(now-uids.valueAt(i), pw);
pw.println(" ago");
}
}
}
if (!mBadProcesses.getMap().isEmpty()) {
boolean printed = false;
final ArrayMap<String, SparseArray<BadProcessInfo>> pmap = mBadProcesses.getMap();
final int processCount = pmap.size();
for (int ip = 0; ip < processCount; ip++) {
final String pname = pmap.keyAt(ip);
final SparseArray<BadProcessInfo> uids = pmap.valueAt(ip);
final int uidCount = uids.size();
for (int i = 0; i < uidCount; i++) {
final int puid = uids.keyAt(i);
final ProcessRecord r = mService.mProcessNames.get(pname, puid);
if (dumpPackage != null && (r == null
|| !r.pkgList.containsKey(dumpPackage))) {
continue;
}
if (!printed) {
if (needSep) pw.println();
needSep = true;
pw.println(" Bad processes:");
printed = true;
}
final BadProcessInfo info = uids.valueAt(i);
pw.print(" Bad process "); pw.print(pname);
pw.print(" uid "); pw.print(puid);
pw.print(": crashed at time "); pw.println(info.time);
if (info.shortMsg != null) {
pw.print(" Short msg: "); pw.println(info.shortMsg);
}
if (info.longMsg != null) {
pw.print(" Long msg: "); pw.println(info.longMsg);
}
if (info.stack != null) {
pw.println(" Stack:");
int lastPos = 0;
for (int pos = 0; pos < info.stack.length(); pos++) {
if (info.stack.charAt(pos) == '\n') {
pw.print(" ");
pw.write(info.stack, lastPos, pos-lastPos);
pw.println();
lastPos = pos+1;
}
}
if (lastPos < info.stack.length()) {
pw.print(" ");
pw.write(info.stack, lastPos, info.stack.length()-lastPos);
pw.println();
}
}
}
}
}
return needSep;
}
boolean isBadProcessLocked(ApplicationInfo info) {
return mBadProcesses.get(info.processName, info.uid) != null;
}
void clearBadProcessLocked(ApplicationInfo info) {
mBadProcesses.remove(info.processName, info.uid);
}
void resetProcessCrashTimeLocked(ApplicationInfo info) {
mProcessCrashTimes.remove(info.processName, info.uid);
}
void resetProcessCrashTimeLocked(boolean resetEntireUser, int appId, int userId) {
final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap();
for (int ip = pmap.size() - 1; ip >= 0; ip--) {
SparseArray<Long> ba = pmap.valueAt(ip);
for (int i = ba.size() - 1; i >= 0; i--) {
boolean remove = false;
final int entUid = ba.keyAt(i);
if (!resetEntireUser) {
if (userId == UserHandle.USER_ALL) {
if (UserHandle.getAppId(entUid) == appId) {
remove = true;
}
} else {
if (entUid == UserHandle.getUid(userId, appId)) {
remove = true;
}
}
} else if (UserHandle.getUserId(entUid) == userId) {
remove = true;
}
if (remove) {
ba.removeAt(i);
}
}
if (ba.size() == 0) {
pmap.removeAt(ip);
}
}
}
void loadAppsNotReportingCrashesFromConfigLocked(String appsNotReportingCrashesConfig) {
if (appsNotReportingCrashesConfig != null) {
final String[] split = appsNotReportingCrashesConfig.split(",");
if (split.length > 0) {
mAppsNotReportingCrashes = new ArraySet<>();
Collections.addAll(mAppsNotReportingCrashes, split);
}
}
}
void killAppAtUserRequestLocked(ProcessRecord app, Dialog fromDialog) {
app.crashing = false;
app.crashingReport = null;
app.notResponding = false;
app.notRespondingReport = null;
if (app.anrDialog == fromDialog) {
app.anrDialog = null;
}
if (app.waitDialog == fromDialog) {
app.waitDialog = null;
}
if (app.pid > 0 && app.pid != MY_PID) {
handleAppCrashLocked(app, "user-terminated" /*reason*/,
null /*shortMsg*/, null /*longMsg*/, null /*stackTrace*/, null /*data*/);
app.kill("user request after error", true);
}
}
/**
* Induce a crash in the given app.
*
* @param uid if nonnegative, the required matching uid of the target to crash
* @param initialPid fast-path match for the target to crash
* @param packageName fallback match if the stated pid is not found or doesn't match uid
* @param userId If nonnegative, required to identify a match by package name
* @param message
*/
void scheduleAppCrashLocked(int uid, int initialPid, String packageName, int userId,
String message) {
ProcessRecord proc = null;
// Figure out which process to kill. We don't trust that initialPid
// still has any relation to current pids, so must scan through the
// list.
synchronized (mService.mPidsSelfLocked) {
for (int i=0; i<mService.mPidsSelfLocked.size(); i++) {
ProcessRecord p = mService.mPidsSelfLocked.valueAt(i);
if (uid >= 0 && p.uid != uid) {
continue;
}
if (p.pid == initialPid) {
proc = p;
break;
}
if (p.pkgList.containsKey(packageName)
&& (userId < 0 || p.userId == userId)) {
proc = p;
}
}
}
if (proc == null) {
Slog.w(TAG, "crashApplication: nothing for uid=" + uid
+ " initialPid=" + initialPid
+ " packageName=" + packageName
+ " userId=" + userId);
return;
}
proc.scheduleCrash(message);
}
/**
* Bring up the "unexpected error" dialog box for a crashing app.
* Deal with edge cases (intercepts from instrumented applications,
* ActivityController, error intent receivers, that sort of thing).
* @param r the application crashing
* @param crashInfo describing the failure
*/
void crashApplication(ProcessRecord r, ApplicationErrorReport.CrashInfo crashInfo) {
final int callingPid = Binder.getCallingPid();
final int callingUid = Binder.getCallingUid();
final long origId = Binder.clearCallingIdentity();
try {
crashApplicationInner(r, crashInfo, callingPid, callingUid);
} finally {
Binder.restoreCallingIdentity(origId);
}
}
void crashApplicationInner(ProcessRecord r, ApplicationErrorReport.CrashInfo crashInfo,
int callingPid, int callingUid) {
long timeMillis = System.currentTimeMillis();
String shortMsg = crashInfo.exceptionClassName;
String longMsg = crashInfo.exceptionMessage;
String stackTrace = crashInfo.stackTrace;
if (shortMsg != null && longMsg != null) {
longMsg = shortMsg + ": " + longMsg;
} else if (shortMsg != null) {
longMsg = shortMsg;
}
// If a persistent app is stuck in a crash loop, the device isn't very
// usable, so we want to consider sending out a rescue party.
if (r != null && r.persistent) {
RescueParty.notePersistentAppCrash(mContext, r.uid);
}
AppErrorResult result = new AppErrorResult();
TaskRecord task;
synchronized (mService) {
/**
* If crash is handled by instance of {@link android.app.IActivityController},
* finish now and don't show the app error dialog.
*/
if (handleAppCrashInActivityController(r, crashInfo, shortMsg, longMsg, stackTrace,
timeMillis, callingPid, callingUid)) {
return;
}
/**
* If this process was running instrumentation, finish now - it will be handled in
* {@link ActivityManagerService#handleAppDiedLocked}.
*/
if (r != null && r.instr != null) {
return;
}
// Log crash in battery stats.
if (r != null) {
mService.mBatteryStatsService.noteProcessCrash(r.processName, r.uid);
}
AppErrorDialog.Data data = new AppErrorDialog.Data();
data.result = result;
data.proc = r;
// If we can't identify the process or it's already exceeded its crash quota,
// quit right away without showing a crash dialog.
if (r == null || !makeAppCrashingLocked(r, shortMsg, longMsg, stackTrace, data)) {
return;
}
final Message msg = Message.obtain();
msg.what = ActivityManagerService.SHOW_ERROR_UI_MSG;
task = data.task;
msg.obj = data;
mService.mUiHandler.sendMessage(msg);
}
int res = result.get();
Intent appErrorIntent = null;
MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_CRASH, res);
if (res == AppErrorDialog.TIMEOUT || res == AppErrorDialog.CANCEL) {
res = AppErrorDialog.FORCE_QUIT;
}
synchronized (mService) {
if (res == AppErrorDialog.MUTE) {
stopReportingCrashesLocked(r);
}
if (res == AppErrorDialog.RESTART) {
mService.removeProcessLocked(r, false, true, "crash");
if (task != null) {
try {
mService.startActivityFromRecents(task.taskId,
ActivityOptions.makeBasic().toBundle());
} catch (IllegalArgumentException e) {
// Hmm, that didn't work, app might have crashed before creating a
// recents entry. Let's see if we have a safe-to-restart intent.
final Set<String> cats = task.intent != null
? task.intent.getCategories() : null;
if (cats != null && cats.contains(Intent.CATEGORY_LAUNCHER)) {
mService.getActivityStartController().startActivityInPackage(
task.mCallingUid, callingPid, callingUid, task.mCallingPackage,
task.intent, null, null, null, 0, 0,
new SafeActivityOptions(ActivityOptions.makeBasic()),
task.userId, null,
"AppErrors", false /*validateIncomingUser*/);
}
}
}
}
if (res == AppErrorDialog.FORCE_QUIT) {
long orig = Binder.clearCallingIdentity();
try {
// Kill it with fire!
mService.mStackSupervisor.handleAppCrashLocked(r);
if (!r.persistent) {
mService.removeProcessLocked(r, false, false, "crash");
mService.mStackSupervisor.resumeFocusedStackTopActivityLocked();
}
} finally {
Binder.restoreCallingIdentity(orig);
}
}
if (res == AppErrorDialog.APP_INFO) {
appErrorIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
appErrorIntent.setData(Uri.parse("package:" + r.info.packageName));
appErrorIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
}
if (res == AppErrorDialog.FORCE_QUIT_AND_REPORT) {
appErrorIntent = createAppErrorIntentLocked(r, timeMillis, crashInfo);
}
if (r != null && !r.isolated && res != AppErrorDialog.RESTART) {
// XXX Can't keep track of crash time for isolated processes,
// since they don't have a persistent identity.
mProcessCrashTimes.put(r.info.processName, r.uid,
SystemClock.uptimeMillis());
}
}
if (appErrorIntent != null) {
try {
mContext.startActivityAsUser(appErrorIntent, new UserHandle(r.userId));
} catch (ActivityNotFoundException e) {
Slog.w(TAG, "bug report receiver dissappeared", e);
}
}
}
private boolean handleAppCrashInActivityController(ProcessRecord r,
ApplicationErrorReport.CrashInfo crashInfo,
String shortMsg, String longMsg,
String stackTrace, long timeMillis,
int callingPid, int callingUid) {
if (mService.mController == null) {
return false;
}
try {
String name = r != null ? r.processName : null;
int pid = r != null ? r.pid : callingPid;
int uid = r != null ? r.info.uid : callingUid;
if (!mService.mController.appCrashed(name, pid,
shortMsg, longMsg, timeMillis, crashInfo.stackTrace)) {
if ("1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"))
&& "Native crash".equals(crashInfo.exceptionClassName)) {
Slog.w(TAG, "Skip killing native crashed app " + name
+ "(" + pid + ") during testing");
} else {
Slog.w(TAG, "Force-killing crashed app " + name
+ " at watcher's request");
if (r != null) {
if (!makeAppCrashingLocked(r, shortMsg, longMsg, stackTrace, null))
{
r.kill("crash", true);
}
} else {
// Huh.
Process.killProcess(pid);
ActivityManagerService.killProcessGroup(uid, pid);
}
}
return true;
}
} catch (RemoteException e) {
mService.mController = null;
Watchdog.getInstance().setActivityController(null);
}
return false;
}
private boolean makeAppCrashingLocked(ProcessRecord app,
String shortMsg, String longMsg, String stackTrace, AppErrorDialog.Data data) {
app.crashing = true;
app.crashingReport = generateProcessError(app,
ActivityManager.ProcessErrorStateInfo.CRASHED, null, shortMsg, longMsg, stackTrace);
startAppProblemLocked(app);
app.stopFreezingAllLocked();
return handleAppCrashLocked(app, "force-crash" /*reason*/, shortMsg, longMsg, stackTrace,
data);
}
void startAppProblemLocked(ProcessRecord app) {
// If this app is not running under the current user, then we
// can't give it a report button because that would require
// launching the report UI under a different user.
app.errorReportReceiver = null;
for (int userId : mService.mUserController.getCurrentProfileIds()) {
if (app.userId == userId) {
app.errorReportReceiver = ApplicationErrorReport.getErrorReportReceiver(
mContext, app.info.packageName, app.info.flags);
}
}
mService.skipCurrentReceiverLocked(app);
}
/**
* Generate a process error record, suitable for attachment to a ProcessRecord.
*
* @param app The ProcessRecord in which the error occurred.
* @param condition Crashing, Application Not Responding, etc. Values are defined in
* ActivityManager.ProcessErrorStateInfo
* @param activity The activity associated with the crash, if known.
* @param shortMsg Short message describing the crash.
* @param longMsg Long message describing the crash.
* @param stackTrace Full crash stack trace, may be null.
*
* @return Returns a fully-formed ProcessErrorStateInfo record.
*/
private ActivityManager.ProcessErrorStateInfo generateProcessError(ProcessRecord app,
int condition, String activity, String shortMsg, String longMsg, String stackTrace) {
ActivityManager.ProcessErrorStateInfo report = new ActivityManager.ProcessErrorStateInfo();
report.condition = condition;
report.processName = app.processName;
report.pid = app.pid;
report.uid = app.info.uid;
report.tag = activity;
report.shortMsg = shortMsg;
report.longMsg = longMsg;
report.stackTrace = stackTrace;
return report;
}
Intent createAppErrorIntentLocked(ProcessRecord r,
long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) {
ApplicationErrorReport report = createAppErrorReportLocked(r, timeMillis, crashInfo);
if (report == null) {
return null;
}
Intent result = new Intent(Intent.ACTION_APP_ERROR);
result.setComponent(r.errorReportReceiver);
result.putExtra(Intent.EXTRA_BUG_REPORT, report);
result.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
return result;
}
private ApplicationErrorReport createAppErrorReportLocked(ProcessRecord r,
long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) {
if (r.errorReportReceiver == null) {
return null;
}
if (!r.crashing && !r.notResponding && !r.forceCrashReport) {
return null;
}
ApplicationErrorReport report = new ApplicationErrorReport();
report.packageName = r.info.packageName;
report.installerPackageName = r.errorReportReceiver.getPackageName();
report.processName = r.processName;
report.time = timeMillis;
report.systemApp = (r.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
if (r.crashing || r.forceCrashReport) {
report.type = ApplicationErrorReport.TYPE_CRASH;
report.crashInfo = crashInfo;
} else if (r.notResponding) {
report.type = ApplicationErrorReport.TYPE_ANR;
report.anrInfo = new ApplicationErrorReport.AnrInfo();
report.anrInfo.activity = r.notRespondingReport.tag;
report.anrInfo.cause = r.notRespondingReport.shortMsg;
report.anrInfo.info = r.notRespondingReport.longMsg;
}
return report;
}
boolean handleAppCrashLocked(ProcessRecord app, String reason,
String shortMsg, String longMsg, String stackTrace, AppErrorDialog.Data data) {
final long now = SystemClock.uptimeMillis();
final boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
final boolean procIsBoundForeground =
(app.curProcState == ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE);
Long crashTime;
Long crashTimePersistent;
boolean tryAgain = false;
if (!app.isolated) {
crashTime = mProcessCrashTimes.get(app.info.processName, app.uid);
crashTimePersistent = mProcessCrashTimesPersistent.get(app.info.processName, app.uid);
} else {
crashTime = crashTimePersistent = null;
}
// Bump up the crash count of any services currently running in the proc.
for (int i = app.services.size() - 1; i >= 0; i--) {
// Any services running in the application need to be placed
// back in the pending list.
ServiceRecord sr = app.services.valueAt(i);
// If the service was restarted a while ago, then reset crash count, else increment it.
if (now > sr.restartTime + ProcessList.MIN_CRASH_INTERVAL) {
sr.crashCount = 1;
} else {
sr.crashCount++;
}
// Allow restarting for started or bound foreground services that are crashing.
// This includes wallpapers.
if (sr.crashCount < mService.mConstants.BOUND_SERVICE_MAX_CRASH_RETRY
&& (sr.isForeground || procIsBoundForeground)) {
tryAgain = true;
}
}
if (crashTime != null && now < crashTime + ProcessList.MIN_CRASH_INTERVAL) {
// The process crashed again very quickly. If it was a bound foreground service, let's
// try to restart again in a while, otherwise the process loses!
Slog.w(TAG, "Process " + app.info.processName
+ " has crashed too many times: killing!");
EventLog.writeEvent(EventLogTags.AM_PROCESS_CRASHED_TOO_MUCH,
app.userId, app.info.processName, app.uid);
mService.mStackSupervisor.handleAppCrashLocked(app);
if (!app.persistent) {
// We don't want to start this process again until the user
// explicitly does so... but for persistent process, we really
// need to keep it running. If a persistent process is actually
// repeatedly crashing, then badness for everyone.
EventLog.writeEvent(EventLogTags.AM_PROC_BAD, app.userId, app.uid,
app.info.processName);
if (!app.isolated) {
// XXX We don't have a way to mark isolated processes
// as bad, since they don't have a peristent identity.
mBadProcesses.put(app.info.processName, app.uid,
new BadProcessInfo(now, shortMsg, longMsg, stackTrace));
mProcessCrashTimes.remove(app.info.processName, app.uid);
}
app.bad = true;
app.removed = true;
// Don't let services in this process be restarted and potentially
// annoy the user repeatedly. Unless it is persistent, since those
// processes run critical code.
mService.removeProcessLocked(app, false, tryAgain, "crash");
mService.mStackSupervisor.resumeFocusedStackTopActivityLocked();
if (!showBackground) {
return false;
}
}
mService.mStackSupervisor.resumeFocusedStackTopActivityLocked();
} else {
final TaskRecord affectedTask =
mService.mStackSupervisor.finishTopCrashedActivitiesLocked(app, reason);
if (data != null) {
data.task = affectedTask;
}
if (data != null && crashTimePersistent != null
&& now < crashTimePersistent + ProcessList.MIN_CRASH_INTERVAL) {
data.repeating = true;
}
}
if (data != null && tryAgain) {
data.isRestartableForService = true;
}
// If the crashing process is what we consider to be the "home process" and it has been
// replaced by a third-party app, clear the package preferred activities from packages
// with a home activity running in the process to prevent a repeatedly crashing app
// from blocking the user to manually clear the list.
final ArrayList<ActivityRecord> activities = app.activities;
if (app == mService.mHomeProcess && activities.size() > 0
&& (mService.mHomeProcess.info.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
final ActivityRecord r = activities.get(activityNdx);
if (r.isActivityTypeHome()) {
Log.i(TAG, "Clearing package preferred activities from " + r.packageName);
try {
ActivityThread.getPackageManager()
.clearPackagePreferredActivities(r.packageName);
} catch (RemoteException c) {
// pm is in same process, this will never happen.
}
}
}
}
if (!app.isolated) {
// XXX Can't keep track of crash times for isolated processes,
// because they don't have a persistent identity.
mProcessCrashTimes.put(app.info.processName, app.uid, now);
mProcessCrashTimesPersistent.put(app.info.processName, app.uid, now);
}
if (app.crashHandler != null) mService.mHandler.post(app.crashHandler);
return true;
}
void handleShowAppErrorUi(Message msg) {
AppErrorDialog.Data data = (AppErrorDialog.Data) msg.obj;
boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
AppErrorDialog dialogToShow = null;
final String packageName;
final int userId;
synchronized (mService) {
final ProcessRecord proc = data.proc;
final AppErrorResult res = data.result;
if (proc == null) {
Slog.e(TAG, "handleShowAppErrorUi: proc is null");
return;
}
packageName = proc.info.packageName;
userId = proc.userId;
if (proc.crashDialog != null) {
Slog.e(TAG, "App already has crash dialog: " + proc);
if (res != null) {
res.set(AppErrorDialog.ALREADY_SHOWING);
}
return;
}
boolean isBackground = (UserHandle.getAppId(proc.uid)
>= Process.FIRST_APPLICATION_UID
&& proc.pid != MY_PID);
for (int profileId : mService.mUserController.getCurrentProfileIds()) {
isBackground &= (userId != profileId);
}
if (isBackground && !showBackground) {
Slog.w(TAG, "Skipping crash dialog of " + proc + ": background");
if (res != null) {
res.set(AppErrorDialog.BACKGROUND_USER);
}
return;
}
final boolean showFirstCrash = Settings.Global.getInt(
mContext.getContentResolver(),
Settings.Global.SHOW_FIRST_CRASH_DIALOG, 0) != 0;
final boolean showFirstCrashDevOption = Settings.Secure.getIntForUser(
mContext.getContentResolver(),
Settings.Secure.SHOW_FIRST_CRASH_DIALOG_DEV_OPTION,
0,
mService.mUserController.getCurrentUserId()) != 0;
final boolean crashSilenced = mAppsNotReportingCrashes != null &&
mAppsNotReportingCrashes.contains(proc.info.packageName);
if ((mService.canShowErrorDialogs() || showBackground) && !crashSilenced
&& (showFirstCrash || showFirstCrashDevOption || data.repeating)) {
proc.crashDialog = dialogToShow = new AppErrorDialog(mContext, mService, data);
} else {
// The device is asleep, so just pretend that the user
// saw a crash dialog and hit "force quit".
if (res != null) {
res.set(AppErrorDialog.CANT_SHOW);
}
}
}
// If we've created a crash dialog, show it without the lock held
if (dialogToShow != null) {
Slog.i(TAG, "Showing crash dialog for package " + packageName + " u" + userId);
dialogToShow.show();
}
}
void stopReportingCrashesLocked(ProcessRecord proc) {
if (mAppsNotReportingCrashes == null) {
mAppsNotReportingCrashes = new ArraySet<>();
}
mAppsNotReportingCrashes.add(proc.info.packageName);
}
static boolean isInterestingForBackgroundTraces(ProcessRecord app) {
// The system_server is always considered interesting.
if (app.pid == MY_PID) {
return true;
}
// A package is considered interesting if any of the following is true :
//
// - It's displaying an activity.
// - It's the SystemUI.
// - It has an overlay or a top UI visible.
//
// NOTE: The check whether a given ProcessRecord belongs to the systemui
// process is a bit of a kludge, but the same pattern seems repeated at
// several places in the system server.
return app.isInterestingToUserLocked() ||
(app.info != null && "com.android.systemui".equals(app.info.packageName)) ||
(app.hasTopUi || app.hasOverlayUi);
}
final void appNotResponding(ProcessRecord app, ActivityRecord activity,
ActivityRecord parent, boolean aboveSystem, final String annotation) {
ArrayList<Integer> firstPids = new ArrayList<Integer>(5);
SparseArray<Boolean> lastPids = new SparseArray<Boolean>(20);
if (mService.mController != null) {
try {
// 0 == continue, -1 = kill process immediately
int res = mService.mController.appEarlyNotResponding(
app.processName, app.pid, annotation);
if (res < 0 && app.pid != MY_PID) {
app.kill("anr", true);
}
} catch (RemoteException e) {
mService.mController = null;
Watchdog.getInstance().setActivityController(null);
}
}
long anrTime = SystemClock.uptimeMillis();
if (ActivityManagerService.MONITOR_CPU_USAGE) {
mService.updateCpuStatsNow();
}
// Unless configured otherwise, swallow ANRs in background processes & kill the process.
boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
boolean isSilentANR;
synchronized (mService) {
// PowerManager.reboot() can block for a long time, so ignore ANRs while shutting down.
if (mService.mShuttingDown) {
Slog.i(TAG, "During shutdown skipping ANR: " + app + " " + annotation);
return;
} else if (app.notResponding) {
Slog.i(TAG, "Skipping duplicate ANR: " + app + " " + annotation);
return;
} else if (app.crashing) {
Slog.i(TAG, "Crashing app skipping ANR: " + app + " " + annotation);
return;
} else if (app.killedByAm) {
Slog.i(TAG, "App already killed by AM skipping ANR: " + app + " " + annotation);
return;
} else if (app.killed) {
Slog.i(TAG, "Skipping died app ANR: " + app + " " + annotation);
return;
}
// In case we come through here for the same app before completing
// this one, mark as anring now so we will bail out.
app.notResponding = true;
// Log the ANR to the event log.
EventLog.writeEvent(EventLogTags.AM_ANR, app.userId, app.pid,
app.processName, app.info.flags, annotation);
// Dump thread traces as quickly as we can, starting with "interesting" processes.
firstPids.add(app.pid);
// Don't dump other PIDs if it's a background ANR
isSilentANR = !showBackground && !isInterestingForBackgroundTraces(app);
if (!isSilentANR) {
int parentPid = app.pid;
if (parent != null && parent.app != null && parent.app.pid > 0) {
parentPid = parent.app.pid;
}
if (parentPid != app.pid) firstPids.add(parentPid);
if (MY_PID != app.pid && MY_PID != parentPid) firstPids.add(MY_PID);
for (int i = mService.mLruProcesses.size() - 1; i >= 0; i--) {
ProcessRecord r = mService.mLruProcesses.get(i);
if (r != null && r.thread != null) {
int pid = r.pid;
if (pid > 0 && pid != app.pid && pid != parentPid && pid != MY_PID) {
if (r.persistent) {
firstPids.add(pid);
if (DEBUG_ANR) Slog.i(TAG, "Adding persistent proc: " + r);
} else if (r.treatLikeActivity) {
firstPids.add(pid);
if (DEBUG_ANR) Slog.i(TAG, "Adding likely IME: " + r);
} else {
lastPids.put(pid, Boolean.TRUE);
if (DEBUG_ANR) Slog.i(TAG, "Adding ANR proc: " + r);
}
}
}
}
}
}
// Log the ANR to the main log.
StringBuilder info = new StringBuilder();
info.setLength(0);
info.append("ANR in ").append(app.processName);
if (activity != null && activity.shortComponentName != null) {
info.append(" (").append(activity.shortComponentName).append(")");
}
info.append("\n");
info.append("PID: ").append(app.pid).append("\n");
if (annotation != null) {
info.append("Reason: ").append(annotation).append("\n");
}
if (parent != null && parent != activity) {
info.append("Parent: ").append(parent.shortComponentName).append("\n");
}
ProcessCpuTracker processCpuTracker = new ProcessCpuTracker(true);
// don't dump native PIDs for background ANRs unless it is the process of interest
String[] nativeProcs = null;
if (isSilentANR) {
for (int i = 0; i < NATIVE_STACKS_OF_INTEREST.length; i++) {
if (NATIVE_STACKS_OF_INTEREST[i].equals(app.processName)) {
nativeProcs = new String[] { app.processName };
break;
}
}
} else {
nativeProcs = NATIVE_STACKS_OF_INTEREST;
}
int[] pids = nativeProcs == null ? null : Process.getPidsForCommands(nativeProcs);
ArrayList<Integer> nativePids = null;
if (pids != null) {
nativePids = new ArrayList<Integer>(pids.length);
for (int i : pids) {
nativePids.add(i);
}
}
// For background ANRs, don't pass the ProcessCpuTracker to
// avoid spending 1/2 second collecting stats to rank lastPids.
File tracesFile = ActivityManagerService.dumpStackTraces(
true, firstPids,
(isSilentANR) ? null : processCpuTracker,
(isSilentANR) ? null : lastPids,
nativePids);
String cpuInfo = null;
if (ActivityManagerService.MONITOR_CPU_USAGE) {
mService.updateCpuStatsNow();
synchronized (mService.mProcessCpuTracker) {
cpuInfo = mService.mProcessCpuTracker.printCurrentState(anrTime);
}
info.append(processCpuTracker.printCurrentLoad());
info.append(cpuInfo);
}
info.append(processCpuTracker.printCurrentState(anrTime));
Slog.e(TAG, info.toString());
if (tracesFile == null) {
// There is no trace file, so dump (only) the alleged culprit's threads to the log
Process.sendSignal(app.pid, Process.SIGNAL_QUIT);
}
StatsLog.write(StatsLog.ANR_OCCURRED, app.uid, app.processName,
activity == null ? "unknown": activity.shortComponentName, annotation,
(app.info != null) ? (app.info.isInstantApp()
? StatsLog.ANROCCURRED__IS_INSTANT_APP__TRUE
: StatsLog.ANROCCURRED__IS_INSTANT_APP__FALSE)
: StatsLog.ANROCCURRED__IS_INSTANT_APP__UNAVAILABLE,
app != null ? (app.isInterestingToUserLocked()
? StatsLog.ANROCCURRED__FOREGROUND_STATE__FOREGROUND
: StatsLog.ANROCCURRED__FOREGROUND_STATE__BACKGROUND)
: StatsLog.ANROCCURRED__FOREGROUND_STATE__UNKNOWN);
mService.addErrorToDropBox("anr", app, app.processName, activity, parent, annotation,
cpuInfo, tracesFile, null);
if (mService.mController != null) {
try {
// 0 == show dialog, 1 = keep waiting, -1 = kill process immediately
int res = mService.mController.appNotResponding(
app.processName, app.pid, info.toString());
if (res != 0) {
if (res < 0 && app.pid != MY_PID) {
app.kill("anr", true);
} else {
synchronized (mService) {
mService.mServices.scheduleServiceTimeoutLocked(app);
}
}
return;
}
} catch (RemoteException e) {
mService.mController = null;
Watchdog.getInstance().setActivityController(null);
}
}
synchronized (mService) {
mService.mBatteryStatsService.noteProcessAnr(app.processName, app.uid);
if (isSilentANR) {
app.kill("bg anr", true);
return;
}
// Set the app's notResponding state, and look up the errorReportReceiver
makeAppNotRespondingLocked(app,
activity != null ? activity.shortComponentName : null,
annotation != null ? "ANR " + annotation : "ANR",
info.toString());
// Bring up the infamous App Not Responding dialog
Message msg = Message.obtain();
msg.what = ActivityManagerService.SHOW_NOT_RESPONDING_UI_MSG;
msg.obj = new AppNotRespondingDialog.Data(app, activity, aboveSystem);
mService.mUiHandler.sendMessage(msg);
}
}
private void makeAppNotRespondingLocked(ProcessRecord app,
String activity, String shortMsg, String longMsg) {
app.notResponding = true;
app.notRespondingReport = generateProcessError(app,
ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING,
activity, shortMsg, longMsg, null);
startAppProblemLocked(app);
app.stopFreezingAllLocked();
}
void handleShowAnrUi(Message msg) {
Dialog dialogToShow = null;
synchronized (mService) {
AppNotRespondingDialog.Data data = (AppNotRespondingDialog.Data) msg.obj;
final ProcessRecord proc = data.proc;
if (proc == null) {
Slog.e(TAG, "handleShowAnrUi: proc is null");
return;
}
if (proc.anrDialog != null) {
Slog.e(TAG, "App already has anr dialog: " + proc);
MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_ANR,
AppNotRespondingDialog.ALREADY_SHOWING);
return;
}
Intent intent = new Intent("android.intent.action.ANR");
if (!mService.mProcessesReady) {
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
| Intent.FLAG_RECEIVER_FOREGROUND);
}
mService.broadcastIntentLocked(null, null, intent,
null, null, 0, null, null, null, AppOpsManager.OP_NONE,
null, false, false, MY_PID, Process.SYSTEM_UID, 0 /* TODO: Verify */);
boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
if (mService.canShowErrorDialogs() || showBackground) {
dialogToShow = new AppNotRespondingDialog(mService, mContext, data);
proc.anrDialog = dialogToShow;
} else {
MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_ANR,
AppNotRespondingDialog.CANT_SHOW);
// Just kill the app if there is no dialog to be shown.
mService.killAppAtUsersRequest(proc, null);
}
}
// If we've created a crash dialog, show it without the lock held
if (dialogToShow != null) {
dialogToShow.show();
}
}
/**
* Information about a process that is currently marked as bad.
*/
static final class BadProcessInfo {
BadProcessInfo(long time, String shortMsg, String longMsg, String stack) {
this.time = time;
this.shortMsg = shortMsg;
this.longMsg = longMsg;
this.stack = stack;
}
final long time;
final String shortMsg;
final String longMsg;
final String stack;
}
}