| /* |
| * Copyright (C) 2015 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; |
| |
| import android.app.AlarmManager; |
| import android.app.AppOpsManager; |
| import android.content.Context; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.os.Binder; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.MemoryFile; |
| import android.os.Message; |
| import android.os.ParcelFileDescriptor; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.Trace; |
| import android.os.UserHandle; |
| import android.util.Log; |
| import android.view.IGraphicsStats; |
| import android.view.IGraphicsStatsCallback; |
| |
| import com.android.internal.util.DumpUtils; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Calendar; |
| import java.util.HashSet; |
| import java.util.TimeZone; |
| |
| /** |
| * This service's job is to collect aggregate rendering profile data. It |
| * does this by allowing rendering processes to request an ashmem buffer |
| * to place their stats into. |
| * |
| * Buffers are rotated on a daily (in UTC) basis and only the 3 most-recent days |
| * are kept. |
| * |
| * The primary consumer of this is incident reports and automated metric checking. It is not |
| * intended for end-developer consumption, for that we have gfxinfo. |
| * |
| * Buffer rotation process: |
| * 1) Alarm fires |
| * 2) onRotateGraphicsStatsBuffer() is sent to all active processes |
| * 3) Upon receiving the callback, the process will stop using the previous ashmem buffer and |
| * request a new one. |
| * 4) When that request is received we now know that the ashmem region is no longer in use so |
| * it gets queued up for saving to disk and a new ashmem region is created and returned |
| * for the process to use. |
| * |
| * @hide */ |
| public class GraphicsStatsService extends IGraphicsStats.Stub { |
| public static final String GRAPHICS_STATS_SERVICE = "graphicsstats"; |
| |
| private static final String TAG = "GraphicsStatsService"; |
| |
| private static final int SAVE_BUFFER = 1; |
| private static final int DELETE_OLD = 2; |
| |
| // This isn't static because we need this to happen after registerNativeMethods, however |
| // the class is loaded (and thus static ctor happens) before that occurs. |
| private final int ASHMEM_SIZE = nGetAshmemSize(); |
| private final byte[] ZERO_DATA = new byte[ASHMEM_SIZE]; |
| |
| private final Context mContext; |
| private final AppOpsManager mAppOps; |
| private final AlarmManager mAlarmManager; |
| private final Object mLock = new Object(); |
| private ArrayList<ActiveBuffer> mActive = new ArrayList<>(); |
| private File mGraphicsStatsDir; |
| private final Object mFileAccessLock = new Object(); |
| private Handler mWriteOutHandler; |
| private boolean mRotateIsScheduled = false; |
| |
| public GraphicsStatsService(Context context) { |
| mContext = context; |
| mAppOps = context.getSystemService(AppOpsManager.class); |
| mAlarmManager = context.getSystemService(AlarmManager.class); |
| File systemDataDir = new File(Environment.getDataDirectory(), "system"); |
| mGraphicsStatsDir = new File(systemDataDir, "graphicsstats"); |
| mGraphicsStatsDir.mkdirs(); |
| if (!mGraphicsStatsDir.exists()) { |
| throw new IllegalStateException("Graphics stats directory does not exist: " |
| + mGraphicsStatsDir.getAbsolutePath()); |
| } |
| HandlerThread bgthread = new HandlerThread("GraphicsStats-disk", Process.THREAD_PRIORITY_BACKGROUND); |
| bgthread.start(); |
| |
| mWriteOutHandler = new Handler(bgthread.getLooper(), new Handler.Callback() { |
| @Override |
| public boolean handleMessage(Message msg) { |
| switch (msg.what) { |
| case SAVE_BUFFER: |
| saveBuffer((HistoricalBuffer) msg.obj); |
| break; |
| case DELETE_OLD: |
| deleteOldBuffers(); |
| break; |
| } |
| return true; |
| } |
| }); |
| } |
| |
| /** |
| * Current rotation policy is to rotate at midnight UTC. We don't specify RTC_WAKEUP because |
| * rotation can be delayed if there's otherwise no activity. However exact is used because |
| * we don't want the system to delay it by TOO much. |
| */ |
| private void scheduleRotateLocked() { |
| if (mRotateIsScheduled) { |
| return; |
| } |
| mRotateIsScheduled = true; |
| Calendar calendar = normalizeDate(System.currentTimeMillis()); |
| calendar.add(Calendar.DATE, 1); |
| mAlarmManager.setExact(AlarmManager.RTC, calendar.getTimeInMillis(), TAG, this::onAlarm, |
| mWriteOutHandler); |
| } |
| |
| private void onAlarm() { |
| // We need to make a copy since some of the callbacks won't be proxy and thus |
| // can result in a re-entrant acquisition of mLock that would result in a modification |
| // of mActive during iteration. |
| ActiveBuffer[] activeCopy; |
| synchronized (mLock) { |
| mRotateIsScheduled = false; |
| scheduleRotateLocked(); |
| activeCopy = mActive.toArray(new ActiveBuffer[0]); |
| } |
| for (ActiveBuffer active : activeCopy) { |
| try { |
| active.mCallback.onRotateGraphicsStatsBuffer(); |
| } catch (RemoteException e) { |
| Log.w(TAG, String.format("Failed to notify '%s' (pid=%d) to rotate buffers", |
| active.mInfo.packageName, active.mPid), e); |
| } |
| } |
| // Give a few seconds for everyone to rotate before doing the cleanup |
| mWriteOutHandler.sendEmptyMessageDelayed(DELETE_OLD, 10000); |
| } |
| |
| @Override |
| public ParcelFileDescriptor requestBufferForProcess(String packageName, IGraphicsStatsCallback token) |
| throws RemoteException { |
| int uid = Binder.getCallingUid(); |
| int pid = Binder.getCallingPid(); |
| ParcelFileDescriptor pfd = null; |
| long callingIdentity = Binder.clearCallingIdentity(); |
| try { |
| mAppOps.checkPackage(uid, packageName); |
| PackageInfo info = mContext.getPackageManager().getPackageInfoAsUser( |
| packageName, |
| 0, |
| UserHandle.getUserId(uid)); |
| synchronized (mLock) { |
| pfd = requestBufferForProcessLocked(token, uid, pid, packageName, info.versionCode); |
| } |
| } catch (PackageManager.NameNotFoundException ex) { |
| throw new RemoteException("Unable to find package: '" + packageName + "'"); |
| } finally { |
| Binder.restoreCallingIdentity(callingIdentity); |
| } |
| return pfd; |
| } |
| |
| private ParcelFileDescriptor getPfd(MemoryFile file) { |
| try { |
| if (!file.getFileDescriptor().valid()) { |
| throw new IllegalStateException("Invalid file descriptor"); |
| } |
| return new ParcelFileDescriptor(file.getFileDescriptor()); |
| } catch (IOException ex) { |
| throw new IllegalStateException("Failed to get PFD from memory file", ex); |
| } |
| } |
| |
| private ParcelFileDescriptor requestBufferForProcessLocked(IGraphicsStatsCallback token, |
| int uid, int pid, String packageName, int versionCode) throws RemoteException { |
| ActiveBuffer buffer = fetchActiveBuffersLocked(token, uid, pid, packageName, versionCode); |
| scheduleRotateLocked(); |
| return getPfd(buffer.mProcessBuffer); |
| } |
| |
| private Calendar normalizeDate(long timestamp) { |
| Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC")); |
| calendar.setTimeInMillis(timestamp); |
| calendar.set(Calendar.HOUR_OF_DAY, 0); |
| calendar.set(Calendar.MINUTE, 0); |
| calendar.set(Calendar.SECOND, 0); |
| calendar.set(Calendar.MILLISECOND, 0); |
| return calendar; |
| } |
| |
| private File pathForApp(BufferInfo info) { |
| String subPath = String.format("%d/%s/%d/total", |
| normalizeDate(info.startTime).getTimeInMillis(), info.packageName, info.versionCode); |
| return new File(mGraphicsStatsDir, subPath); |
| } |
| |
| private void saveBuffer(HistoricalBuffer buffer) { |
| if (Trace.isTagEnabled(Trace.TRACE_TAG_SYSTEM_SERVER)) { |
| Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "saving graphicsstats for " + buffer.mInfo.packageName); |
| } |
| synchronized (mFileAccessLock) { |
| File path = pathForApp(buffer.mInfo); |
| File parent = path.getParentFile(); |
| parent.mkdirs(); |
| if (!parent.exists()) { |
| Log.w(TAG, "Unable to create path: '" + parent.getAbsolutePath() + "'"); |
| return; |
| } |
| nSaveBuffer(path.getAbsolutePath(), buffer.mInfo.packageName, buffer.mInfo.versionCode, |
| buffer.mInfo.startTime, buffer.mInfo.endTime, buffer.mData); |
| } |
| Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER); |
| } |
| |
| private void deleteRecursiveLocked(File file) { |
| if (file.isDirectory()) { |
| for (File child : file.listFiles()) { |
| deleteRecursiveLocked(child); |
| } |
| } |
| if (!file.delete()) { |
| Log.w(TAG, "Failed to delete '" + file.getAbsolutePath() + "'!"); |
| } |
| } |
| |
| private void deleteOldBuffers() { |
| Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "deleting old graphicsstats buffers"); |
| synchronized (mFileAccessLock) { |
| File[] files = mGraphicsStatsDir.listFiles(); |
| if (files == null || files.length <= 3) { |
| return; |
| } |
| long[] sortedDates = new long[files.length]; |
| for (int i = 0; i < files.length; i++) { |
| try { |
| sortedDates[i] = Long.parseLong(files[i].getName()); |
| } catch (NumberFormatException ex) { |
| // Skip unrecognized folders |
| } |
| } |
| if (sortedDates.length <= 3) { |
| return; |
| } |
| Arrays.sort(sortedDates); |
| for (int i = 0; i < sortedDates.length - 3; i++) { |
| deleteRecursiveLocked(new File(mGraphicsStatsDir, Long.toString(sortedDates[i]))); |
| } |
| } |
| Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER); |
| } |
| |
| private void addToSaveQueue(ActiveBuffer buffer) { |
| try { |
| HistoricalBuffer data = new HistoricalBuffer(buffer); |
| Message.obtain(mWriteOutHandler, SAVE_BUFFER, data).sendToTarget(); |
| } catch (IOException e) { |
| Log.w(TAG, "Failed to copy graphicsstats from " + buffer.mInfo.packageName, e); |
| } |
| buffer.closeAllBuffers(); |
| } |
| |
| private void processDied(ActiveBuffer buffer) { |
| synchronized (mLock) { |
| mActive.remove(buffer); |
| } |
| addToSaveQueue(buffer); |
| } |
| |
| private ActiveBuffer fetchActiveBuffersLocked(IGraphicsStatsCallback token, int uid, int pid, |
| String packageName, int versionCode) throws RemoteException { |
| int size = mActive.size(); |
| long today = normalizeDate(System.currentTimeMillis()).getTimeInMillis(); |
| for (int i = 0; i < size; i++) { |
| ActiveBuffer buffer = mActive.get(i); |
| if (buffer.mPid == pid |
| && buffer.mUid == uid) { |
| // If the buffer is too old we remove it and return a new one |
| if (buffer.mInfo.startTime < today) { |
| buffer.binderDied(); |
| break; |
| } else { |
| return buffer; |
| } |
| } |
| } |
| // Didn't find one, need to create it |
| try { |
| ActiveBuffer buffers = new ActiveBuffer(token, uid, pid, packageName, versionCode); |
| mActive.add(buffers); |
| return buffers; |
| } catch (IOException ex) { |
| throw new RemoteException("Failed to allocate space"); |
| } |
| } |
| |
| private HashSet<File> dumpActiveLocked(long dump, ArrayList<HistoricalBuffer> buffers) { |
| HashSet<File> skipFiles = new HashSet<>(buffers.size()); |
| for (int i = 0; i < buffers.size(); i++) { |
| HistoricalBuffer buffer = buffers.get(i); |
| File path = pathForApp(buffer.mInfo); |
| skipFiles.add(path); |
| nAddToDump(dump, path.getAbsolutePath(), buffer.mInfo.packageName, |
| buffer.mInfo.versionCode, buffer.mInfo.startTime, buffer.mInfo.endTime, |
| buffer.mData); |
| } |
| return skipFiles; |
| } |
| |
| private void dumpHistoricalLocked(long dump, HashSet<File> skipFiles) { |
| for (File date : mGraphicsStatsDir.listFiles()) { |
| for (File pkg : date.listFiles()) { |
| for (File version : pkg.listFiles()) { |
| File data = new File(version, "total"); |
| if (skipFiles.contains(data)) { |
| continue; |
| } |
| nAddToDump(dump, data.getAbsolutePath()); |
| } |
| } |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) { |
| if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, TAG, fout)) return; |
| boolean dumpProto = false; |
| for (String str : args) { |
| if ("--proto".equals(str)) { |
| dumpProto = true; |
| break; |
| } |
| } |
| ArrayList<HistoricalBuffer> buffers; |
| synchronized (mLock) { |
| buffers = new ArrayList<>(mActive.size()); |
| for (int i = 0; i < mActive.size(); i++) { |
| try { |
| buffers.add(new HistoricalBuffer(mActive.get(i))); |
| } catch (IOException ex) { |
| // Ignore |
| } |
| } |
| } |
| long dump = nCreateDump(fd.getInt$(), dumpProto); |
| try { |
| synchronized (mFileAccessLock) { |
| HashSet<File> skipList = dumpActiveLocked(dump, buffers); |
| buffers.clear(); |
| dumpHistoricalLocked(dump, skipList); |
| } |
| } finally { |
| nFinishDump(dump); |
| } |
| } |
| |
| private static native int nGetAshmemSize(); |
| private static native long nCreateDump(int outFd, boolean isProto); |
| private static native void nAddToDump(long dump, String path, String packageName, |
| int versionCode, long startTime, long endTime, byte[] data); |
| private static native void nAddToDump(long dump, String path); |
| private static native void nFinishDump(long dump); |
| private static native void nSaveBuffer(String path, String packageName, int versionCode, |
| long startTime, long endTime, byte[] data); |
| |
| private final class BufferInfo { |
| final String packageName; |
| final int versionCode; |
| long startTime; |
| long endTime; |
| |
| BufferInfo(String packageName, int versionCode, long startTime) { |
| this.packageName = packageName; |
| this.versionCode = versionCode; |
| this.startTime = startTime; |
| } |
| } |
| |
| private final class ActiveBuffer implements DeathRecipient { |
| final BufferInfo mInfo; |
| final int mUid; |
| final int mPid; |
| final IGraphicsStatsCallback mCallback; |
| final IBinder mToken; |
| MemoryFile mProcessBuffer; |
| |
| ActiveBuffer(IGraphicsStatsCallback token, int uid, int pid, String packageName, int versionCode) |
| throws RemoteException, IOException { |
| mInfo = new BufferInfo(packageName, versionCode, System.currentTimeMillis()); |
| mUid = uid; |
| mPid = pid; |
| mCallback = token; |
| mToken = mCallback.asBinder(); |
| mToken.linkToDeath(this, 0); |
| mProcessBuffer = new MemoryFile("GFXStats-" + pid, ASHMEM_SIZE); |
| mProcessBuffer.writeBytes(ZERO_DATA, 0, 0, ASHMEM_SIZE); |
| } |
| |
| @Override |
| public void binderDied() { |
| mToken.unlinkToDeath(this, 0); |
| processDied(this); |
| } |
| |
| void closeAllBuffers() { |
| if (mProcessBuffer != null) { |
| mProcessBuffer.close(); |
| mProcessBuffer = null; |
| } |
| } |
| } |
| |
| private final class HistoricalBuffer { |
| final BufferInfo mInfo; |
| final byte[] mData = new byte[ASHMEM_SIZE]; |
| HistoricalBuffer(ActiveBuffer active) throws IOException { |
| mInfo = active.mInfo; |
| mInfo.endTime = System.currentTimeMillis(); |
| active.mProcessBuffer.readBytes(mData, 0, 0, ASHMEM_SIZE); |
| } |
| } |
| } |