}
}
- boolean useTombstonedForJavaTraces = false;
- File tracesFile;
-
- final String tracesDirProp = SystemProperties.get("dalvik.vm.stack-trace-dir", "");
- if (tracesDirProp.isEmpty()) {
- // When dalvik.vm.stack-trace-dir is not set, we are using the "old" trace
- // dumping scheme. All traces are written to a global trace file (usually
- // "/data/anr/traces.txt") so the code below must take care to unlink and recreate
- // the file if requested.
- //
- // This mode of operation will be removed in the near future.
-
-
- String globalTracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null);
- if (globalTracesPath.isEmpty()) {
- Slog.w(TAG, "dumpStackTraces: no trace path configured");
- return null;
- }
-
- tracesFile = new File(globalTracesPath);
- try {
- if (clearTraces && tracesFile.exists()) {
- tracesFile.delete();
- }
-
- tracesFile.createNewFile();
- FileUtils.setPermissions(globalTracesPath, 0666, -1, -1); // -rw-rw-rw-
- } catch (IOException e) {
- Slog.w(TAG, "Unable to prepare ANR traces file: " + tracesFile, e);
- return null;
- }
- } else {
- File tracesDir = new File(tracesDirProp);
- // When dalvik.vm.stack-trace-dir is set, we use the "new" trace dumping scheme.
- // Each set of ANR traces is written to a separate file and dumpstate will process
- // all such files and add them to a captured bug report if they're recent enough.
- maybePruneOldTraces(tracesDir);
-
- // NOTE: We should consider creating the file in native code atomically once we've
- // gotten rid of the old scheme of dumping and lot of the code that deals with paths
- // can be removed.
- tracesFile = createAnrDumpFile(tracesDir);
- if (tracesFile == null) {
- return null;
- }
-
- useTombstonedForJavaTraces = true;
+ final File tracesDir = new File("/data/anr");
+ // Each set of ANR traces is written to a separate file and dumpstate will process
+ // all such files and add them to a captured bug report if they're recent enough.
+ maybePruneOldTraces(tracesDir);
+
+ // NOTE: We should consider creating the file in native code atomically once we've
+ // gotten rid of the old scheme of dumping and lot of the code that deals with paths
+ // can be removed.
+ File tracesFile = createAnrDumpFile(tracesDir);
+ if (tracesFile == null) {
+ return null;
}
- dumpStackTraces(tracesFile.getAbsolutePath(), firstPids, nativePids, extraPids,
- useTombstonedForJavaTraces);
+ dumpStackTraces(tracesFile.getAbsolutePath(), firstPids, nativePids, extraPids);
return tracesFile;
}
* since it's the system_server that creates trace files for most ANRs.
*/
private static void maybePruneOldTraces(File tracesDir) {
- final long now = System.currentTimeMillis();
- final File[] traceFiles = tracesDir.listFiles();
+ final File[] files = tracesDir.listFiles();
+ if (files == null) return;
- if (traceFiles != null) {
- for (File file : traceFiles) {
- if ((now - file.lastModified()) > DAY_IN_MILLIS) {
- if (!file.delete()) {
- Slog.w(TAG, "Unable to prune stale trace file: " + file);
- }
+ final int max = SystemProperties.getInt("tombstoned.max_anr_count", 64);
+ final long now = System.currentTimeMillis();
+ Arrays.sort(files, Comparator.comparingLong(File::lastModified).reversed());
+ for (int i = 0; i < files.length; ++i) {
+ if (i > max || (now - files[i].lastModified()) > DAY_IN_MILLIS) {
+ if (!files[i].delete()) {
+ Slog.w(TAG, "Unable to prune stale trace file: " + files[i]);
}
}
}
}
/**
- * Legacy code, do not use. Existing users will be deleted.
- *
- * @deprecated
- */
- @Deprecated
- public static class DumpStackFileObserver extends FileObserver {
- // Keep in sync with frameworks/native/cmds/dumpstate/utils.cpp
- private static final int TRACE_DUMP_TIMEOUT_MS = 10000; // 10 seconds
-
- private final String mTracesPath;
- private boolean mClosed;
-
- public DumpStackFileObserver(String tracesPath) {
- super(tracesPath, FileObserver.CLOSE_WRITE);
- mTracesPath = tracesPath;
- }
-
- @Override
- public synchronized void onEvent(int event, String path) {
- mClosed = true;
- notify();
- }
-
- public long dumpWithTimeout(int pid, long timeout) {
- sendSignal(pid, SIGNAL_QUIT);
- final long start = SystemClock.elapsedRealtime();
-
- final long waitTime = Math.min(timeout, TRACE_DUMP_TIMEOUT_MS);
- synchronized (this) {
- try {
- wait(waitTime); // Wait for traces file to be closed.
- } catch (InterruptedException e) {
- Slog.wtf(TAG, e);
- }
- }
-
- // This avoids a corner case of passing a negative time to the native
- // trace in case we've already hit the overall timeout.
- final long timeWaited = SystemClock.elapsedRealtime() - start;
- if (timeWaited >= timeout) {
- return timeWaited;
- }
-
- if (!mClosed) {
- Slog.w(TAG, "Didn't see close of " + mTracesPath + " for pid " + pid +
- ". Attempting native stack collection.");
-
- final long nativeDumpTimeoutMs = Math.min(
- NATIVE_DUMP_TIMEOUT_MS, timeout - timeWaited);
-
- Debug.dumpNativeBacktraceToFileTimeout(pid, mTracesPath,
- (int) (nativeDumpTimeoutMs / 1000));
- }
-
- final long end = SystemClock.elapsedRealtime();
- mClosed = false;
-
- return (end - start);
- }
- }
-
- /**
* Dump java traces for process {@code pid} to the specified file. If java trace dumping
* fails, a native backtrace is attempted. Note that the timeout {@code timeoutMs} only applies
* to the java section of the trace, a further {@code NATIVE_DUMP_TIMEOUT_MS} might be spent
}
private static void dumpStackTraces(String tracesFile, ArrayList<Integer> firstPids,
- ArrayList<Integer> nativePids, ArrayList<Integer> extraPids,
- boolean useTombstonedForJavaTraces) {
+ ArrayList<Integer> nativePids, ArrayList<Integer> extraPids) {
// We don't need any sort of inotify based monitoring when we're dumping traces via
// tombstoned. Data is piped to an "intercept" FD installed in tombstoned so we're in full
// control of all writes to the file in question.
- final DumpStackFileObserver observer;
- if (useTombstonedForJavaTraces) {
- observer = null;
- } else {
- // Use a FileObserver to detect when traces finish writing.
- // The order of traces is considered important to maintain for legibility.
- observer = new DumpStackFileObserver(tracesFile);
- }
// We must complete all stack dumps within 20 seconds.
long remainingTime = 20 * 1000;
- try {
- if (observer != null) {
- observer.startWatching();
- }
-
- // First collect all of the stacks of the most important pids.
- if (firstPids != null) {
- int num = firstPids.size();
- for (int i = 0; i < num; i++) {
- if (DEBUG_ANR) Slog.d(TAG, "Collecting stacks for pid "
- + firstPids.get(i));
- final long timeTaken;
- if (useTombstonedForJavaTraces) {
- timeTaken = dumpJavaTracesTombstoned(firstPids.get(i), tracesFile, remainingTime);
- } else {
- timeTaken = observer.dumpWithTimeout(firstPids.get(i), remainingTime);
- }
- remainingTime -= timeTaken;
- if (remainingTime <= 0) {
- Slog.e(TAG, "Aborting stack trace dump (current firstPid=" + firstPids.get(i) +
- "); deadline exceeded.");
- return;
- }
+ // First collect all of the stacks of the most important pids.
+ if (firstPids != null) {
+ int num = firstPids.size();
+ for (int i = 0; i < num; i++) {
+ if (DEBUG_ANR) Slog.d(TAG, "Collecting stacks for pid " + firstPids.get(i));
+ final long timeTaken = dumpJavaTracesTombstoned(firstPids.get(i), tracesFile,
+ remainingTime);
+
+ remainingTime -= timeTaken;
+ if (remainingTime <= 0) {
+ Slog.e(TAG, "Aborting stack trace dump (current firstPid=" + firstPids.get(i) +
+ "); deadline exceeded.");
+ return;
+ }
- if (DEBUG_ANR) {
- Slog.d(TAG, "Done with pid " + firstPids.get(i) + " in " + timeTaken + "ms");
- }
+ if (DEBUG_ANR) {
+ Slog.d(TAG, "Done with pid " + firstPids.get(i) + " in " + timeTaken + "ms");
}
}
+ }
- // Next collect the stacks of the native pids
- if (nativePids != null) {
- for (int pid : nativePids) {
- if (DEBUG_ANR) Slog.d(TAG, "Collecting stacks for native pid " + pid);
- final long nativeDumpTimeoutMs = Math.min(NATIVE_DUMP_TIMEOUT_MS, remainingTime);
+ // Next collect the stacks of the native pids
+ if (nativePids != null) {
+ for (int pid : nativePids) {
+ if (DEBUG_ANR) Slog.d(TAG, "Collecting stacks for native pid " + pid);
+ final long nativeDumpTimeoutMs = Math.min(NATIVE_DUMP_TIMEOUT_MS, remainingTime);
- final long start = SystemClock.elapsedRealtime();
- Debug.dumpNativeBacktraceToFileTimeout(
- pid, tracesFile, (int) (nativeDumpTimeoutMs / 1000));
- final long timeTaken = SystemClock.elapsedRealtime() - start;
+ final long start = SystemClock.elapsedRealtime();
+ Debug.dumpNativeBacktraceToFileTimeout(
+ pid, tracesFile, (int) (nativeDumpTimeoutMs / 1000));
+ final long timeTaken = SystemClock.elapsedRealtime() - start;
- remainingTime -= timeTaken;
- if (remainingTime <= 0) {
- Slog.e(TAG, "Aborting stack trace dump (current native pid=" + pid +
- "); deadline exceeded.");
- return;
- }
+ remainingTime -= timeTaken;
+ if (remainingTime <= 0) {
+ Slog.e(TAG, "Aborting stack trace dump (current native pid=" + pid +
+ "); deadline exceeded.");
+ return;
+ }
- if (DEBUG_ANR) {
- Slog.d(TAG, "Done with native pid " + pid + " in " + timeTaken + "ms");
- }
+ if (DEBUG_ANR) {
+ Slog.d(TAG, "Done with native pid " + pid + " in " + timeTaken + "ms");
}
}
+ }
- // Lastly, dump stacks for all extra PIDs from the CPU tracker.
- if (extraPids != null) {
- for (int pid : extraPids) {
- if (DEBUG_ANR) Slog.d(TAG, "Collecting stacks for extra pid " + pid);
+ // Lastly, dump stacks for all extra PIDs from the CPU tracker.
+ if (extraPids != null) {
+ for (int pid : extraPids) {
+ if (DEBUG_ANR) Slog.d(TAG, "Collecting stacks for extra pid " + pid);
- final long timeTaken;
- if (useTombstonedForJavaTraces) {
- timeTaken = dumpJavaTracesTombstoned(pid, tracesFile, remainingTime);
- } else {
- timeTaken = observer.dumpWithTimeout(pid, remainingTime);
- }
+ final long timeTaken = dumpJavaTracesTombstoned(pid, tracesFile, remainingTime);
- remainingTime -= timeTaken;
- if (remainingTime <= 0) {
- Slog.e(TAG, "Aborting stack trace dump (current extra pid=" + pid +
- "); deadline exceeded.");
- return;
- }
+ remainingTime -= timeTaken;
+ if (remainingTime <= 0) {
+ Slog.e(TAG, "Aborting stack trace dump (current extra pid=" + pid +
+ "); deadline exceeded.");
+ return;
+ }
- if (DEBUG_ANR) {
- Slog.d(TAG, "Done with extra pid " + pid + " in " + timeTaken + "ms");
- }
+ if (DEBUG_ANR) {
+ Slog.d(TAG, "Done with extra pid " + pid + " in " + timeTaken + "ms");
}
}
- } finally {
- if (observer != null) {
- observer.stopWatching();
- }
}
}
if (true || Build.IS_USER) {
return;
}
- String tracesPath = SystemProperties.get("dalvik.vm.stack-trace-file", null);
- if (tracesPath == null || tracesPath.length() == 0) {
- return;
- }
StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
StrictMode.allowThreadDiskWrites();
try {
- final File tracesFile = new File(tracesPath);
- final File tracesDir = tracesFile.getParentFile();
- final File tracesTmp = new File(tracesDir, "__tmp__");
+ File tracesDir = new File("/data/anr");
+ File tracesFile = null;
try {
- if (tracesFile.exists()) {
- tracesTmp.delete();
- tracesFile.renameTo(tracesTmp);
- }
+ tracesFile = File.createTempFile("app_slow", null, tracesDir);
+
StringBuilder sb = new StringBuilder();
Time tobj = new Time();
tobj.set(System.currentTimeMillis());
fos.close();
FileUtils.setPermissions(tracesFile.getPath(), 0666, -1, -1); // -rw-rw-rw-
} catch (IOException e) {
- Slog.w(TAG, "Unable to prepare slow app traces file: " + tracesPath, e);
+ Slog.w(TAG, "Unable to prepare slow app traces file: " + tracesFile, e);
return;
}
if (app != null && app.pid > 0) {
ArrayList<Integer> firstPids = new ArrayList<Integer>();
firstPids.add(app.pid);
- dumpStackTraces(tracesPath, firstPids, null, null, true /* useTombstoned */);
+ dumpStackTraces(tracesFile.getAbsolutePath(), firstPids, null, null);
}
File lastTracesFile = null;
lastTracesFile = curTracesFile;
}
tracesFile.renameTo(curTracesFile);
- if (tracesTmp.exists()) {
- tracesTmp.renameTo(tracesFile);
- }
} finally {
StrictMode.setThreadPolicy(oldPolicy);
}
try {
mInstaller.markBootComplete(VMRuntime.getInstructionSet(abi));
} catch (InstallerException e) {
- Slog.w(TAG, "Unable to mark boot complete for abi: " + abi + " (" +
- e.getMessage() +")");
+ if (!VMRuntime.didPruneDalvikCache()) {
+ // This is technically not the right filter, as different zygotes may
+ // have made different pruning decisions. But the log is best effort,
+ // anyways.
+ Slog.w(TAG, "Unable to mark boot complete for abi: " + abi + " (" +
+ e.getMessage() +")");
+ }
}
completedIsas.add(instructionSet);
}
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