mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-12 14:37:50 +00:00
577 lines
22 KiB
Java
577 lines
22 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
package org.mozilla.gecko;
|
|
|
|
import java.io.BufferedOutputStream;
|
|
import java.io.BufferedReader;
|
|
import java.io.File;
|
|
import java.io.FileInputStream;
|
|
import java.io.FileOutputStream;
|
|
import java.io.FileReader;
|
|
import java.io.IOException;
|
|
import java.io.InputStreamReader;
|
|
import java.io.OutputStream;
|
|
import java.io.Reader;
|
|
import java.util.UUID;
|
|
import java.util.regex.Pattern;
|
|
|
|
import org.json.JSONObject;
|
|
import org.mozilla.gecko.util.ThreadUtils;
|
|
|
|
import android.content.BroadcastReceiver;
|
|
import android.content.Context;
|
|
import android.content.Intent;
|
|
import android.content.IntentFilter;
|
|
import android.os.Handler;
|
|
import android.os.Looper;
|
|
import android.util.Log;
|
|
|
|
public final class ANRReporter extends BroadcastReceiver
|
|
{
|
|
private static final boolean DEBUG = false;
|
|
private static final String LOGTAG = "GeckoANRReporter";
|
|
|
|
private static final String ANR_ACTION = "android.intent.action.ANR";
|
|
// Number of lines to search traces.txt to decide whether it's a Gecko ANR
|
|
private static final int LINES_TO_IDENTIFY_TRACES = 10;
|
|
// ANRs may happen because of memory pressure,
|
|
// so don't use up too much memory here
|
|
// Size of buffer to hold one line of text
|
|
private static final int TRACES_LINE_SIZE = 100;
|
|
// Size of block to use when processing traces.txt
|
|
private static final int TRACES_BLOCK_SIZE = 2000;
|
|
private static final String TRACES_CHARSET = "utf-8";
|
|
private static final String PING_CHARSET = "utf-8";
|
|
|
|
private static final ANRReporter sInstance = new ANRReporter();
|
|
private static int sRegisteredCount;
|
|
private Handler mHandler;
|
|
private volatile boolean mPendingANR;
|
|
|
|
private static native boolean requestNativeStack(boolean unwind);
|
|
private static native String getNativeStack();
|
|
private static native void releaseNativeStack();
|
|
|
|
public static void register(Context context) {
|
|
if (sRegisteredCount++ != 0) {
|
|
// Already registered
|
|
return;
|
|
}
|
|
sInstance.start(context);
|
|
}
|
|
|
|
public static void unregister() {
|
|
if (sRegisteredCount == 0) {
|
|
Log.w(LOGTAG, "register/unregister mismatch");
|
|
return;
|
|
}
|
|
if (--sRegisteredCount != 0) {
|
|
// Should still be registered
|
|
return;
|
|
}
|
|
sInstance.stop();
|
|
}
|
|
|
|
private void start(final Context context) {
|
|
|
|
Thread receiverThread = new Thread(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
Looper.prepare();
|
|
synchronized (ANRReporter.this) {
|
|
mHandler = new Handler();
|
|
ANRReporter.this.notify();
|
|
}
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "registering receiver");
|
|
}
|
|
context.registerReceiver(ANRReporter.this,
|
|
new IntentFilter(ANR_ACTION),
|
|
null,
|
|
mHandler);
|
|
Looper.loop();
|
|
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "unregistering receiver");
|
|
}
|
|
context.unregisterReceiver(ANRReporter.this);
|
|
mHandler = null;
|
|
}
|
|
}, LOGTAG);
|
|
|
|
receiverThread.setDaemon(true);
|
|
receiverThread.start();
|
|
}
|
|
|
|
private void stop() {
|
|
synchronized (this) {
|
|
while (mHandler == null) {
|
|
try {
|
|
wait(1000);
|
|
if (mHandler == null) {
|
|
// We timed out; just give up. The process is probably
|
|
// quitting anyways, so we let the OS do the clean up
|
|
Log.w(LOGTAG, "timed out waiting for handler");
|
|
return;
|
|
}
|
|
} catch (InterruptedException e) {
|
|
}
|
|
}
|
|
}
|
|
Looper looper = mHandler.getLooper();
|
|
looper.quit();
|
|
try {
|
|
looper.getThread().join();
|
|
} catch (InterruptedException e) {
|
|
}
|
|
}
|
|
|
|
private ANRReporter() {
|
|
}
|
|
|
|
// Return the "traces.txt" file, or null if there is no such file
|
|
private static File getTracesFile() {
|
|
try {
|
|
// getprop [prop-name [default-value]]
|
|
Process propProc = (new ProcessBuilder())
|
|
.command("/system/bin/getprop", "dalvik.vm.stack-trace-file")
|
|
.redirectErrorStream(true)
|
|
.start();
|
|
try {
|
|
BufferedReader buf = new BufferedReader(
|
|
new InputStreamReader(propProc.getInputStream()), TRACES_LINE_SIZE);
|
|
String propVal = buf.readLine();
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "getprop returned " + String.valueOf(propVal));
|
|
}
|
|
// getprop can return empty string when the prop value is empty
|
|
// or prop is undefined, treat both cases the same way
|
|
if (propVal != null && propVal.length() != 0) {
|
|
File tracesFile = new File(propVal);
|
|
if (tracesFile.isFile() && tracesFile.canRead()) {
|
|
return tracesFile;
|
|
} else if (DEBUG) {
|
|
Log.d(LOGTAG, "cannot access traces file");
|
|
}
|
|
} else if (DEBUG) {
|
|
Log.d(LOGTAG, "empty getprop result");
|
|
}
|
|
} finally {
|
|
propProc.destroy();
|
|
}
|
|
} catch (IOException e) {
|
|
Log.w(LOGTAG, e);
|
|
} catch (ClassCastException e) {
|
|
Log.w(LOGTAG, e); // Bug 975436
|
|
}
|
|
// Check most common location one last time just in case
|
|
File tracesFile = new File("/data/anr/traces.txt");
|
|
if (tracesFile.isFile() && tracesFile.canRead()) {
|
|
return tracesFile;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
private static File getPingFile() {
|
|
if (GeckoAppShell.getContext() == null) {
|
|
return null;
|
|
}
|
|
GeckoProfile profile = GeckoAppShell.getGeckoInterface().getProfile();
|
|
if (profile == null) {
|
|
return null;
|
|
}
|
|
File profDir = profile.getDir();
|
|
if (profDir == null) {
|
|
return null;
|
|
}
|
|
File pingDir = new File(profDir, "saved-telemetry-pings");
|
|
pingDir.mkdirs();
|
|
if (!(pingDir.exists() && pingDir.isDirectory())) {
|
|
return null;
|
|
}
|
|
return new File(pingDir, UUID.randomUUID().toString());
|
|
}
|
|
|
|
// Return true if the traces file corresponds to a Gecko ANR
|
|
private static boolean isGeckoTraces(String pkgName, File tracesFile) {
|
|
try {
|
|
final String END_OF_PACKAGE_NAME = "([^a-zA-Z0-9_]|$)";
|
|
// Regex for finding our package name in the traces file
|
|
Pattern pkgPattern = Pattern.compile(Pattern.quote(pkgName) + END_OF_PACKAGE_NAME);
|
|
Pattern mangledPattern = null;
|
|
if (!AppConstants.MANGLED_ANDROID_PACKAGE_NAME.equals(pkgName)) {
|
|
mangledPattern = Pattern.compile(Pattern.quote(
|
|
AppConstants.MANGLED_ANDROID_PACKAGE_NAME) + END_OF_PACKAGE_NAME);
|
|
}
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "trying to match package: " + pkgName);
|
|
}
|
|
BufferedReader traces = new BufferedReader(
|
|
new FileReader(tracesFile), TRACES_BLOCK_SIZE);
|
|
try {
|
|
for (int count = 0; count < LINES_TO_IDENTIFY_TRACES; count++) {
|
|
String line = traces.readLine();
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "identifying line: " + String.valueOf(line));
|
|
}
|
|
if (line == null) {
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "reached end of traces file");
|
|
}
|
|
return false;
|
|
}
|
|
if (pkgPattern.matcher(line).find()) {
|
|
// traces.txt file contains our package
|
|
return true;
|
|
}
|
|
if (mangledPattern != null && mangledPattern.matcher(line).find()) {
|
|
// traces.txt file contains our alternate package
|
|
return true;
|
|
}
|
|
}
|
|
} finally {
|
|
traces.close();
|
|
}
|
|
} catch (IOException e) {
|
|
// meh, can't even read from it right. just return false
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private static long getUptimeMins() {
|
|
|
|
long uptimeMins = (new File("/proc/self/stat")).lastModified();
|
|
if (uptimeMins != 0L) {
|
|
uptimeMins = (System.currentTimeMillis() - uptimeMins) / 1000L / 60L;
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "uptime " + String.valueOf(uptimeMins));
|
|
}
|
|
return uptimeMins;
|
|
} else if (DEBUG) {
|
|
Log.d(LOGTAG, "could not get uptime");
|
|
}
|
|
return 0L;
|
|
}
|
|
|
|
/*
|
|
a saved telemetry ping file consists of JSON in the following format,
|
|
{
|
|
"reason": "android-anr-report",
|
|
"slug": "<uuid-string>",
|
|
"payload": <json-object>
|
|
}
|
|
for Android ANR, our JSON payload should look like,
|
|
{
|
|
"ver": 1,
|
|
"simpleMeasurements": {
|
|
"uptime": <uptime>
|
|
},
|
|
"info": {
|
|
"reason": "android-anr-report",
|
|
"OS": "Android",
|
|
...
|
|
},
|
|
"androidANR": "...",
|
|
"androidLogcat": "..."
|
|
}
|
|
*/
|
|
|
|
private static int writePingPayload(OutputStream ping,
|
|
String payload) throws IOException {
|
|
byte [] data = payload.getBytes(PING_CHARSET);
|
|
ping.write(data);
|
|
return data.length;
|
|
}
|
|
|
|
private static void fillPingHeader(OutputStream ping, String slug)
|
|
throws IOException {
|
|
|
|
// ping file header
|
|
byte [] data = ("{" +
|
|
"\"reason\":\"android-anr-report\"," +
|
|
"\"slug\":" + JSONObject.quote(slug) + "," +
|
|
"\"payload\":").getBytes(PING_CHARSET);
|
|
ping.write(data);
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "wrote ping header, size = " + String.valueOf(data.length));
|
|
}
|
|
|
|
// payload start
|
|
int size = writePingPayload(ping, ("{" +
|
|
"\"ver\":1," +
|
|
"\"simpleMeasurements\":{" +
|
|
"\"uptime\":" + String.valueOf(getUptimeMins()) +
|
|
"}," +
|
|
"\"info\":{" +
|
|
"\"reason\":\"android-anr-report\"," +
|
|
"\"OS\":" + JSONObject.quote(SysInfo.getName()) + "," +
|
|
"\"version\":\"" + String.valueOf(SysInfo.getVersion()) + "\"," +
|
|
"\"appID\":" + JSONObject.quote(AppConstants.MOZ_APP_ID) + "," +
|
|
"\"appVersion\":" + JSONObject.quote(AppConstants.MOZ_APP_VERSION)+ "," +
|
|
"\"appName\":" + JSONObject.quote(AppConstants.MOZ_APP_BASENAME) + "," +
|
|
"\"appBuildID\":" + JSONObject.quote(AppConstants.MOZ_APP_BUILDID) + "," +
|
|
"\"appUpdateChannel\":" + JSONObject.quote(AppConstants.MOZ_UPDATE_CHANNEL) + "," +
|
|
// Technically the platform build ID may be different, but we'll never know
|
|
"\"platformBuildID\":" + JSONObject.quote(AppConstants.MOZ_APP_BUILDID) + "," +
|
|
"\"locale\":" + JSONObject.quote(SysInfo.getLocale()) + "," +
|
|
"\"cpucount\":" + String.valueOf(SysInfo.getCPUCount()) + "," +
|
|
"\"memsize\":" + String.valueOf(SysInfo.getMemSize()) + "," +
|
|
"\"arch\":" + JSONObject.quote(SysInfo.getArchABI()) + "," +
|
|
"\"kernel_version\":" + JSONObject.quote(SysInfo.getKernelVersion()) + "," +
|
|
"\"device\":" + JSONObject.quote(SysInfo.getDevice()) + "," +
|
|
"\"manufacturer\":" + JSONObject.quote(SysInfo.getManufacturer()) + "," +
|
|
"\"hardware\":" + JSONObject.quote(SysInfo.getHardware()) +
|
|
"}," +
|
|
"\"androidANR\":\""));
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "wrote metadata, size = " + String.valueOf(size));
|
|
}
|
|
|
|
// We are at the start of ANR data
|
|
}
|
|
|
|
// Block is a section of the larger input stream, and we want to find pattern within
|
|
// the stream. This is straightforward if the entire pattern is within one block;
|
|
// however, if the pattern spans across two blocks, we have to match both the start of
|
|
// the pattern in the first block and the end of the pattern in the second block.
|
|
// * If pattern is found in block, this method returns the index at the end of the
|
|
// found pattern, which must always be > 0.
|
|
// * If pattern is not found, it returns 0.
|
|
// * If the start of the pattern matches the end of the block, it returns a number
|
|
// < 0, which equals the negated value of how many characters in pattern are already
|
|
// matched; when processing the next block, this number is passed in through
|
|
// prevIndex, and the rest of the characters in pattern are matched against the
|
|
// start of this second block. The method returns value > 0 if the rest of the
|
|
// characters match, or 0 if they do not.
|
|
private static int getEndPatternIndex(String block, String pattern, int prevIndex) {
|
|
if (pattern == null || block.length() < pattern.length()) {
|
|
// Nothing to do
|
|
return 0;
|
|
}
|
|
if (prevIndex < 0) {
|
|
// Last block ended with a partial start; now match start of block to rest of pattern
|
|
if (block.startsWith(pattern.substring(-prevIndex, pattern.length()))) {
|
|
// Rest of pattern matches; return index at end of pattern
|
|
return pattern.length() + prevIndex;
|
|
}
|
|
// Not a match; continue with normal search
|
|
}
|
|
// Did not find pattern in last block; see if entire pattern is inside this block
|
|
int index = block.indexOf(pattern);
|
|
if (index >= 0) {
|
|
// Found pattern; return index at end of the pattern
|
|
return index + pattern.length();
|
|
}
|
|
// Block does not contain the entire pattern, but see if the end of the block
|
|
// contains the start of pattern. To do that, we see if block ends with the
|
|
// first n-1 characters of pattern, the first n-2 characters of pattern, etc.
|
|
for (index = block.length() - pattern.length() + 1; index < block.length(); index++) {
|
|
// Using index as a start, see if the rest of block contains the start of pattern
|
|
if (block.charAt(index) == pattern.charAt(0) &&
|
|
block.endsWith(pattern.substring(0, block.length() - index))) {
|
|
// Found partial match; return -(number of characters matched),
|
|
// i.e. -1 for 1 character matched, -2 for 2 characters matched, etc.
|
|
return index - block.length();
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Copy the content of reader to ping;
|
|
// copying stops when endPattern is found in the input stream
|
|
private static int fillPingBlock(OutputStream ping,
|
|
Reader reader, String endPattern)
|
|
throws IOException {
|
|
|
|
int total = 0;
|
|
int endIndex = 0;
|
|
char [] block = new char[TRACES_BLOCK_SIZE];
|
|
for (int size = reader.read(block); size >= 0; size = reader.read(block)) {
|
|
String stringBlock = new String(block, 0, size);
|
|
endIndex = getEndPatternIndex(stringBlock, endPattern, endIndex);
|
|
if (endIndex > 0) {
|
|
// Found end pattern; clip the string
|
|
stringBlock = stringBlock.substring(0, endIndex);
|
|
}
|
|
String quoted = JSONObject.quote(stringBlock);
|
|
total += writePingPayload(ping, quoted.substring(1, quoted.length() - 1));
|
|
if (endIndex > 0) {
|
|
// End pattern already found; return now
|
|
break;
|
|
}
|
|
}
|
|
return total;
|
|
}
|
|
|
|
private static void fillPingFooter(OutputStream ping,
|
|
boolean haveNativeStack)
|
|
throws IOException {
|
|
|
|
// We are at the end of ANR data
|
|
|
|
int total = writePingPayload(ping, ("\"," +
|
|
"\"androidLogcat\":\""));
|
|
|
|
try {
|
|
// get the last 200 lines of logcat
|
|
Process proc = (new ProcessBuilder())
|
|
.command("/system/bin/logcat", "-v", "threadtime", "-t", "200", "-d", "*:D")
|
|
.redirectErrorStream(true)
|
|
.start();
|
|
try {
|
|
Reader procOut = new InputStreamReader(proc.getInputStream(), TRACES_CHARSET);
|
|
int size = fillPingBlock(ping, procOut, null);
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "wrote logcat, size = " + String.valueOf(size));
|
|
}
|
|
} finally {
|
|
proc.destroy();
|
|
}
|
|
} catch (IOException e) {
|
|
// ignore because logcat is not essential
|
|
Log.w(LOGTAG, e);
|
|
}
|
|
|
|
if (haveNativeStack) {
|
|
total += writePingPayload(ping, ("\"," +
|
|
"\"androidNativeStack\":"));
|
|
|
|
String nativeStack = String.valueOf(getNativeStack());
|
|
int size = writePingPayload(ping, nativeStack);
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "wrote native stack, size = " + String.valueOf(size));
|
|
}
|
|
total += size + writePingPayload(ping, "}");
|
|
} else {
|
|
total += writePingPayload(ping, "\"}");
|
|
}
|
|
|
|
byte [] data = (
|
|
"}").getBytes(PING_CHARSET);
|
|
ping.write(data);
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "wrote ping footer, size = " + String.valueOf(data.length + total));
|
|
}
|
|
}
|
|
|
|
private static void processTraces(Reader traces, File pingFile) {
|
|
|
|
// Unwinding is memory intensive; only unwind if we have enough memory
|
|
boolean haveNativeStack = requestNativeStack(
|
|
/* unwind */ SysInfo.getMemSize() >= 640);
|
|
try {
|
|
OutputStream ping = new BufferedOutputStream(
|
|
new FileOutputStream(pingFile), TRACES_BLOCK_SIZE);
|
|
try {
|
|
fillPingHeader(ping, pingFile.getName());
|
|
// Traces file has the format
|
|
// ----- pid xxx at xxx -----
|
|
// Cmd line: org.mozilla.xxx
|
|
// * stack trace *
|
|
// ----- end xxx -----
|
|
// ----- pid xxx at xxx -----
|
|
// Cmd line: com.android.xxx
|
|
// * stack trace *
|
|
// ...
|
|
// If we end the stack dump at the first end marker,
|
|
// only Fennec stacks will be dumped
|
|
int size = fillPingBlock(ping, traces, "\n----- end");
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "wrote traces, size = " + String.valueOf(size));
|
|
}
|
|
fillPingFooter(ping, haveNativeStack);
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "finished creating ping file");
|
|
}
|
|
return;
|
|
} finally {
|
|
ping.close();
|
|
if (haveNativeStack) {
|
|
releaseNativeStack();
|
|
}
|
|
}
|
|
} catch (IOException e) {
|
|
Log.w(LOGTAG, e);
|
|
}
|
|
// exception; delete ping file
|
|
if (pingFile.exists()) {
|
|
pingFile.delete();
|
|
}
|
|
}
|
|
|
|
private static void processTraces(File tracesFile, File pingFile) {
|
|
try {
|
|
Reader traces = new InputStreamReader(
|
|
new FileInputStream(tracesFile), TRACES_CHARSET);
|
|
try {
|
|
processTraces(traces, pingFile);
|
|
} finally {
|
|
traces.close();
|
|
}
|
|
} catch (IOException e) {
|
|
Log.w(LOGTAG, e);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onReceive(Context context, Intent intent) {
|
|
if (mPendingANR) {
|
|
// we already processed an ANR without getting unstuck; skip this one
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "skipping duplicate ANR");
|
|
}
|
|
return;
|
|
}
|
|
if (ThreadUtils.getUiHandler() != null) {
|
|
mPendingANR = true;
|
|
// detect when the main thread gets unstuck
|
|
ThreadUtils.postToUiThread(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
// okay to reset mPendingANR on main thread
|
|
mPendingANR = false;
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "yay we got unstuck!");
|
|
}
|
|
}
|
|
});
|
|
}
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "receiving " + String.valueOf(intent));
|
|
}
|
|
if (!ANR_ACTION.equals(intent.getAction())) {
|
|
return;
|
|
}
|
|
|
|
// make sure we have a good save location first
|
|
File pingFile = getPingFile();
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "using ping file: " + String.valueOf(pingFile));
|
|
}
|
|
if (pingFile == null) {
|
|
return;
|
|
}
|
|
|
|
File tracesFile = getTracesFile();
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "using traces file: " + String.valueOf(tracesFile));
|
|
}
|
|
if (tracesFile == null) {
|
|
return;
|
|
}
|
|
|
|
// We get ANR intents from all ANRs in the system, but we only want Gecko ANRs
|
|
if (!isGeckoTraces(context.getPackageName(), tracesFile)) {
|
|
if (DEBUG) {
|
|
Log.d(LOGTAG, "traces is not Gecko ANR");
|
|
}
|
|
return;
|
|
}
|
|
Log.i(LOGTAG, "processing Gecko ANR");
|
|
processTraces(tracesFile, pingFile);
|
|
}
|
|
}
|