John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server; |
| 18 | |
Jeff Sharkey | cd65448 | 2016-01-08 17:42:11 -0700 | [diff] [blame] | 19 | import android.app.AppOpsManager; |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 20 | import android.content.Context; |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 21 | import android.os.Binder; |
| 22 | import android.os.IBinder; |
| 23 | import android.os.MemoryFile; |
| 24 | import android.os.ParcelFileDescriptor; |
| 25 | import android.os.RemoteException; |
| 26 | import android.util.Log; |
| 27 | import android.view.IGraphicsStats; |
| 28 | import android.view.ThreadedRenderer; |
| 29 | |
| 30 | import java.io.FileDescriptor; |
| 31 | import java.io.IOException; |
| 32 | import java.io.PrintWriter; |
| 33 | import java.util.ArrayList; |
| 34 | |
| 35 | /** |
| 36 | * This service's job is to collect aggregate rendering profile data. It |
| 37 | * does this by allowing rendering processes to request an ashmem buffer |
| 38 | * to place their stats into. This buffer will be pre-initialized with historical |
| 39 | * data for that process if it exists (if the userId & packageName match a buffer |
| 40 | * in the historical log) |
| 41 | * |
| 42 | * This service does not itself attempt to understand the data in the buffer, |
| 43 | * its primary job is merely to manage distributing these buffers. However, |
| 44 | * it is assumed that this buffer is for ThreadedRenderer and delegates |
| 45 | * directly to ThreadedRenderer for dumping buffers. |
| 46 | * |
| 47 | * MEMORY USAGE: |
| 48 | * |
| 49 | * This class consumes UP TO: |
| 50 | * 1) [active rendering processes] * (ASHMEM_SIZE * 2) |
| 51 | * 2) ASHMEM_SIZE (for scratch space used during dumping) |
| 52 | * 3) ASHMEM_SIZE * HISTORY_SIZE |
| 53 | * |
John Reck | 6601080 | 2016-03-30 14:19:44 -0700 | [diff] [blame] | 54 | * This is currently under 20KiB total memory in the worst case of |
John Reck | 5ed587f | 2016-03-24 15:57:01 -0700 | [diff] [blame] | 55 | * 20 processes in history + 10 unique active processes. |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 56 | * |
| 57 | * @hide */ |
| 58 | public class GraphicsStatsService extends IGraphicsStats.Stub { |
| 59 | public static final String GRAPHICS_STATS_SERVICE = "graphicsstats"; |
| 60 | |
| 61 | private static final String TAG = "GraphicsStatsService"; |
John Reck | 6601080 | 2016-03-30 14:19:44 -0700 | [diff] [blame] | 62 | private static final int ASHMEM_SIZE = 464; |
John Reck | 5742b97 | 2015-05-11 14:29:55 -0700 | [diff] [blame] | 63 | private static final int HISTORY_SIZE = 20; |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 64 | |
| 65 | private final Context mContext; |
Jeff Sharkey | cd65448 | 2016-01-08 17:42:11 -0700 | [diff] [blame] | 66 | private final AppOpsManager mAppOps; |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 67 | private final Object mLock = new Object(); |
| 68 | private ArrayList<ActiveBuffer> mActive = new ArrayList<>(); |
| 69 | private HistoricalData[] mHistoricalLog = new HistoricalData[HISTORY_SIZE]; |
| 70 | private int mNextHistoricalSlot = 0; |
| 71 | private byte[] mTempBuffer = new byte[ASHMEM_SIZE]; |
| 72 | |
| 73 | public GraphicsStatsService(Context context) { |
| 74 | mContext = context; |
Jeff Sharkey | cd65448 | 2016-01-08 17:42:11 -0700 | [diff] [blame] | 75 | mAppOps = context.getSystemService(AppOpsManager.class); |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public ParcelFileDescriptor requestBufferForProcess(String packageName, IBinder token) |
| 80 | throws RemoteException { |
| 81 | int uid = Binder.getCallingUid(); |
| 82 | int pid = Binder.getCallingPid(); |
| 83 | ParcelFileDescriptor pfd = null; |
| 84 | long callingIdentity = Binder.clearCallingIdentity(); |
| 85 | try { |
Jeff Sharkey | cd65448 | 2016-01-08 17:42:11 -0700 | [diff] [blame] | 86 | mAppOps.checkPackage(uid, packageName); |
John Reck | edc524c | 2015-03-18 15:24:33 -0700 | [diff] [blame] | 87 | synchronized (mLock) { |
| 88 | pfd = requestBufferForProcessLocked(token, uid, pid, packageName); |
| 89 | } |
| 90 | } finally { |
| 91 | Binder.restoreCallingIdentity(callingIdentity); |
| 92 | } |
| 93 | return pfd; |
| 94 | } |
| 95 | |
| 96 | private ParcelFileDescriptor getPfd(MemoryFile file) { |
| 97 | try { |
| 98 | return new ParcelFileDescriptor(file.getFileDescriptor()); |
| 99 | } catch (IOException ex) { |
| 100 | throw new IllegalStateException("Failed to get PFD from memory file", ex); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | private ParcelFileDescriptor requestBufferForProcessLocked(IBinder token, |
| 105 | int uid, int pid, String packageName) throws RemoteException { |
| 106 | ActiveBuffer buffer = fetchActiveBuffersLocked(token, uid, pid, packageName); |
| 107 | return getPfd(buffer.mProcessBuffer); |
| 108 | } |
| 109 | |
| 110 | private void processDied(ActiveBuffer buffer) { |
| 111 | synchronized (mLock) { |
| 112 | mActive.remove(buffer); |
| 113 | Log.d("GraphicsStats", "Buffer count: " + mActive.size()); |
| 114 | } |
| 115 | HistoricalData data = buffer.mPreviousData; |
| 116 | buffer.mPreviousData = null; |
| 117 | if (data == null) { |
| 118 | data = mHistoricalLog[mNextHistoricalSlot]; |
| 119 | if (data == null) { |
| 120 | data = new HistoricalData(); |
| 121 | } |
| 122 | } |
| 123 | data.update(buffer.mPackageName, buffer.mUid, buffer.mProcessBuffer); |
| 124 | buffer.closeAllBuffers(); |
| 125 | |
| 126 | mHistoricalLog[mNextHistoricalSlot] = data; |
| 127 | mNextHistoricalSlot = (mNextHistoricalSlot + 1) % mHistoricalLog.length; |
| 128 | } |
| 129 | |
| 130 | private ActiveBuffer fetchActiveBuffersLocked(IBinder token, int uid, int pid, |
| 131 | String packageName) throws RemoteException { |
| 132 | int size = mActive.size(); |
| 133 | for (int i = 0; i < size; i++) { |
| 134 | ActiveBuffer buffers = mActive.get(i); |
| 135 | if (buffers.mPid == pid |
| 136 | && buffers.mUid == uid) { |
| 137 | return buffers; |
| 138 | } |
| 139 | } |
| 140 | // Didn't find one, need to create it |
| 141 | try { |
| 142 | ActiveBuffer buffers = new ActiveBuffer(token, uid, pid, packageName); |
| 143 | mActive.add(buffers); |
| 144 | return buffers; |
| 145 | } catch (IOException ex) { |
| 146 | throw new RemoteException("Failed to allocate space"); |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | private HistoricalData removeHistoricalDataLocked(int uid, String packageName) { |
| 151 | for (int i = 0; i < mHistoricalLog.length; i++) { |
| 152 | final HistoricalData data = mHistoricalLog[i]; |
| 153 | if (data != null && data.mUid == uid |
| 154 | && data.mPackageName.equals(packageName)) { |
| 155 | if (i == mNextHistoricalSlot) { |
| 156 | mHistoricalLog[i] = null; |
| 157 | } else { |
| 158 | mHistoricalLog[i] = mHistoricalLog[mNextHistoricalSlot]; |
| 159 | mHistoricalLog[mNextHistoricalSlot] = null; |
| 160 | } |
| 161 | return data; |
| 162 | } |
| 163 | } |
| 164 | return null; |
| 165 | } |
| 166 | |
| 167 | @Override |
| 168 | protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) { |
| 169 | mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DUMP, TAG); |
| 170 | synchronized (mLock) { |
| 171 | for (int i = 0; i < mActive.size(); i++) { |
| 172 | final ActiveBuffer buffer = mActive.get(i); |
| 173 | fout.print("Package: "); |
| 174 | fout.print(buffer.mPackageName); |
| 175 | fout.flush(); |
| 176 | try { |
| 177 | buffer.mProcessBuffer.readBytes(mTempBuffer, 0, 0, ASHMEM_SIZE); |
| 178 | ThreadedRenderer.dumpProfileData(mTempBuffer, fd); |
| 179 | } catch (IOException e) { |
| 180 | fout.println("Failed to dump"); |
| 181 | } |
| 182 | fout.println(); |
| 183 | } |
| 184 | for (HistoricalData buffer : mHistoricalLog) { |
| 185 | if (buffer == null) continue; |
| 186 | fout.print("Package: "); |
| 187 | fout.print(buffer.mPackageName); |
| 188 | fout.flush(); |
| 189 | ThreadedRenderer.dumpProfileData(buffer.mBuffer, fd); |
| 190 | fout.println(); |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | private final class ActiveBuffer implements DeathRecipient { |
| 196 | final int mUid; |
| 197 | final int mPid; |
| 198 | final String mPackageName; |
| 199 | final IBinder mToken; |
| 200 | MemoryFile mProcessBuffer; |
| 201 | HistoricalData mPreviousData; |
| 202 | |
| 203 | ActiveBuffer(IBinder token, int uid, int pid, String packageName) |
| 204 | throws RemoteException, IOException { |
| 205 | mUid = uid; |
| 206 | mPid = pid; |
| 207 | mPackageName = packageName; |
| 208 | mToken = token; |
| 209 | mToken.linkToDeath(this, 0); |
| 210 | mProcessBuffer = new MemoryFile("GFXStats-" + uid, ASHMEM_SIZE); |
| 211 | mPreviousData = removeHistoricalDataLocked(mUid, mPackageName); |
| 212 | if (mPreviousData != null) { |
| 213 | mProcessBuffer.writeBytes(mPreviousData.mBuffer, 0, 0, ASHMEM_SIZE); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public void binderDied() { |
| 219 | mToken.unlinkToDeath(this, 0); |
| 220 | processDied(this); |
| 221 | } |
| 222 | |
| 223 | void closeAllBuffers() { |
| 224 | if (mProcessBuffer != null) { |
| 225 | mProcessBuffer.close(); |
| 226 | mProcessBuffer = null; |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | private final static class HistoricalData { |
| 232 | final byte[] mBuffer = new byte[ASHMEM_SIZE]; |
| 233 | int mUid; |
| 234 | String mPackageName; |
| 235 | |
| 236 | void update(String packageName, int uid, MemoryFile file) { |
| 237 | mUid = uid; |
| 238 | mPackageName = packageName; |
| 239 | try { |
| 240 | file.readBytes(mBuffer, 0, 0, ASHMEM_SIZE); |
| 241 | } catch (IOException e) {} |
| 242 | } |
| 243 | } |
| 244 | } |