khmel@google.com | 017a978 | 2018-09-28 11:32:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 | package android.gameperformance; |
| 17 | |
| 18 | import java.io.BufferedReader; |
| 19 | import java.io.FileReader; |
| 20 | import java.io.IOException; |
| 21 | import java.util.ArrayList; |
| 22 | import java.util.Arrays; |
| 23 | import java.util.Collections; |
| 24 | import java.util.Comparator; |
| 25 | import java.util.HashMap; |
| 26 | import java.util.List; |
| 27 | import java.util.Map; |
| 28 | import java.util.Set; |
| 29 | import java.util.StringTokenizer; |
| 30 | import java.util.TreeMap; |
| 31 | import java.util.TreeSet; |
| 32 | |
| 33 | /** |
| 34 | * Utility class that performs analysis of atrace logs. This is implemented without Android |
| 35 | * dependencies and therefore can be used in stand-alone mode. |
| 36 | * Idea of this is to track atrace gfx event from graphics buffer producer/consumer. |
| 37 | * We analyze here from surfaceflinger |
| 38 | * queueBuffer - event when buffer was queued. |
| 39 | * acquireBuffer - event when buffer was requested for composition. |
| 40 | * releaseBuffer - even when buffer was released after composition. |
| 41 | * This also track events, issued locally |
| 42 | * localPostBuffer - event when buffer was posted from the local app. |
| 43 | * |
| 44 | * queueBuffer, acquireBuffer, releaseBuffer is accompanied with buffer name so we |
| 45 | * can track life-cycle of particular buffer. |
| 46 | * We don't have such information for localPostBuffer, however we can track next queueBuffer |
| 47 | * from surfaceflinger corresponds to previous localPostBuffer. |
| 48 | * |
| 49 | * Following results are calculated: |
| 50 | * post_time_[min/max/avr]_mcs - time for localPostBuffer duration. |
| 51 | * ready_time_[min/max/avr]_mcs - time from localPostBuffer to when buffer was acquired by |
| 52 | * surfaceflinger. |
| 53 | * latency_[min/max/avr]_mcs - time from localPostBuffer to when buffer was released by |
| 54 | * surfaceflinger. |
| 55 | * missed_frame_percents - percentage of missed frames (frames that do not have right sequence |
| 56 | * of events). |
| 57 | * |
| 58 | * Following is example of atrace logs from different platforms |
| 59 | * <...>-5237 (-----) [000] ...1 228.380392: tracing_mark_write: B|11|SurfaceView - android.gameperformance/android.gameperformance.GamePerformanceActivity#0: 2 |
| 60 | * surfaceflinger-5855 ( 5855) [001] ...1 169.627364: tracing_mark_write: B|24|acquireBuffer |
| 61 | * HwBinder:617_2-652 ( 617) [002] d..1 360262.921756: sde_evtlog: 617|sde_encoder_virt_atomic_check:855|19|0|0|0|0|0|0|0|0|0|0|0|0|0|0 |
| 62 | */ |
| 63 | public class GraphicBufferMetrics { |
| 64 | private final static String TAG = "GraphicBufferMetrics"; |
| 65 | |
| 66 | private final static String KEY_POST_TIME = "post_time"; |
| 67 | private final static String KEY_READY_TIME = "ready_time"; |
| 68 | private final static String KEY_LATENCY = "latency"; |
| 69 | private final static String SUFFIX_MIN = "min"; |
| 70 | private final static String SUFFIX_MAX = "max"; |
| 71 | private final static String SUFFIX_MEDIAN = "median"; |
| 72 | private final static String KEY_MISSED_FRAME_RATE = "missed_frame_percents"; |
| 73 | |
| 74 | private final static int EVENT_POST_BUFFER = 0; |
| 75 | private final static int EVENT_QUEUE_BUFFER = 1; |
| 76 | private final static int EVENT_ACQUIRE_BUFFER = 2; |
| 77 | private final static int EVENT_RELEASE_BUFFER = 3; |
| 78 | |
| 79 | // atrace prints this line. Used as a marker to make sure that we can parse its output. |
| 80 | private final static String ATRACE_HEADER = |
| 81 | "# TASK-PID TGID CPU# |||| TIMESTAMP FUNCTION"; |
| 82 | |
| 83 | private final static String[] KNOWN_PHRASES = new String[] { |
| 84 | "capturing trace... done", "TRACE:"}; |
| 85 | private final static List<String> KNWON_PHRASES_LIST = Arrays.asList(KNOWN_PHRASES); |
| 86 | |
| 87 | // Type of the atrace event we can parse and analyze. |
| 88 | private final static String FUNCTION_TRACING_MARK_WRITE = "tracing_mark_write"; |
| 89 | |
| 90 | // Trace event we can ignore. It contains current timestamp information for the atrace output. |
| 91 | private final static String TRACE_EVENT_CLOCK_SYNC = "trace_event_clock_sync:"; |
| 92 | |
| 93 | // Threshold we consider test passes successfully. If we cannot collect enough amount of frames |
| 94 | // let fail the test. 50 is calculated 10 frames per second running for five seconds. |
| 95 | private final static int MINIMAL_SAMPLE_CNT_TO_PASS = 50; |
| 96 | |
| 97 | /** |
| 98 | * Raw event in atrace. Stored hierarchically. |
| 99 | */ |
| 100 | private static class RawEvent { |
| 101 | // Parent of this event or null for the root holder. |
| 102 | public final RawEvent mParent; |
| 103 | // Time of the event in mcs. |
| 104 | public final long mTime; |
| 105 | // Duration of the event in mcs. |
| 106 | public long mDuration; |
| 107 | // Name/body of the event. |
| 108 | public final String mName; |
| 109 | // Children events. |
| 110 | public final List<RawEvent> mChildren; |
| 111 | |
| 112 | public RawEvent(RawEvent parent, long time, String name) { |
| 113 | mParent = parent; |
| 114 | mTime = time; |
| 115 | mName = name; |
| 116 | mDuration = -1; |
| 117 | mChildren = new ArrayList<>(); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Recursively finds child events. |
| 122 | * @param path specify path to events. For example a/b. That means to find child with name |
| 123 | * 'a' of the current event and in this child find child with name 'b'. Path |
| 124 | * can consist from only one segment and that means we analyze only children of |
| 125 | * the current event. |
| 126 | * @param collector to collect found events. |
| 127 | */ |
| 128 | public void findEvents(String path, List<RawEvent> collector) { |
| 129 | final int separator = path.indexOf('/'); |
| 130 | final String current = separator > 0 ? path.substring(0, separator) : path; |
| 131 | final String nextPath = separator > 0 ? path.substring(separator + 1) : null; |
| 132 | for (RawEvent child : mChildren) { |
| 133 | if (child.mName.equals(current)) { |
| 134 | if (nextPath != null) { |
| 135 | child.findEvents(nextPath, collector); |
| 136 | } else { |
| 137 | collector.add(child); |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | public void dump(String prefix) { |
| 144 | System.err.print(prefix); |
| 145 | System.err.println(mTime + "[" + mDuration + "] " + mName); |
| 146 | for (RawEvent e : mChildren) { |
| 147 | e.dump(prefix + " "); |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Describes graphic buffer event. local post, queued, acquired, released. |
| 154 | */ |
| 155 | private static class BufferEvent { |
| 156 | public final int mType; |
| 157 | public final long mTime; |
| 158 | public final long mDuration; |
| 159 | public final String mBufferId; |
| 160 | |
| 161 | public BufferEvent(int type, long time, long duration, String bufferId) { |
| 162 | mType = type; |
| 163 | mTime = time; |
| 164 | mDuration = duration; |
| 165 | mBufferId = bufferId; |
| 166 | } |
| 167 | |
| 168 | @Override |
| 169 | public String toString() { |
| 170 | return "Type: " + mType + ". Time: " + mTime + |
| 171 | "[" + mDuration + "]. Buffer: " + mBufferId + "."; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Returns true if given char is digit. |
| 177 | */ |
| 178 | private static boolean isDigitChar(char c) { |
| 179 | return (c >= '0') && (c <= '9'); |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Returns true if given char is digit or '.'. |
| 184 | */ |
| 185 | private static boolean isDoubleDigitChar(char c) { |
| 186 | return (c == '.') || isDigitChar(c); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Convert timestamp string that represents double value in seconds to long time that represents |
| 191 | * timestamp in microseconds. |
| 192 | */ |
| 193 | private static long getTimeStamp(String timeStampStr) { |
| 194 | return (long)(1000000.0 * Double.parseDouble(timeStampStr)); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Reads atrace log and build event model. Result is a map, where key specifies event for the |
| 199 | * particular thread. Value is the synthetic root RawEvent that holds all events for the |
| 200 | * thread. Events are stored hierarchically. |
| 201 | */ |
| 202 | private static Map<Integer, RawEvent> buildEventModel(String fileName) throws IOException { |
| 203 | Map<Integer, RawEvent> result = new HashMap<>(); |
| 204 | |
| 205 | BufferedReader bufferedReader = null; |
| 206 | String line = ""; |
| 207 | boolean headerDetected = false; |
| 208 | try { |
| 209 | bufferedReader = new BufferedReader(new FileReader(fileName)); |
| 210 | while ((line = bufferedReader.readLine()) != null) { |
| 211 | // Make sure we find comment that describes output format we can with. |
| 212 | headerDetected |= line.equals(ATRACE_HEADER); |
| 213 | // Skip comments. |
| 214 | if (line.startsWith("#")) { |
| 215 | continue; |
| 216 | } |
| 217 | // Skip known service output |
| 218 | if (KNWON_PHRASES_LIST.contains(line)) { |
| 219 | continue; |
| 220 | } |
| 221 | |
| 222 | if (!headerDetected) { |
| 223 | // We don't know the format of this line. |
| 224 | throw new IllegalStateException("Header was not detected"); |
| 225 | } |
| 226 | |
| 227 | // TASK-PID in header exists at position 12. PID position 17 should contains first |
| 228 | // digit of thread id after the '-'. |
| 229 | if (!isDigitChar(line.charAt(17)) || line.charAt(16) != '-') { |
| 230 | throw new IllegalStateException("Failed to parse thread id: " + line); |
| 231 | } |
| 232 | int rightIndex = line.indexOf(' ', 17); |
| 233 | final String threadIdStr = line.substring(17, rightIndex); |
| 234 | final int threadId = Integer.parseInt(threadIdStr); |
| 235 | |
| 236 | // TIMESTAMP in header exists at position 45 |
| 237 | // This position should point in the middle of timestamp which is ended by ':'. |
| 238 | int leftIndex = 45; |
| 239 | while (isDoubleDigitChar(line.charAt(leftIndex))) { |
| 240 | --leftIndex; |
| 241 | } |
| 242 | rightIndex = line.indexOf(':', 45); |
| 243 | |
| 244 | final String timeStampString = line.substring(leftIndex + 1, rightIndex); |
| 245 | final long timeStampMcs = getTimeStamp(timeStampString); |
| 246 | |
| 247 | // Find function name, pointed by FUNCTION. Long timestamp can shift if position |
| 248 | // so use end of timestamp to find the function which is ended by ':'. |
| 249 | leftIndex = rightIndex + 1; |
| 250 | while (Character.isWhitespace(line.charAt(leftIndex))) { |
| 251 | ++leftIndex; |
| 252 | } |
| 253 | rightIndex = line.indexOf(':', leftIndex); |
| 254 | final String function = line.substring(leftIndex, rightIndex); |
| 255 | |
| 256 | if (!function.equals(FUNCTION_TRACING_MARK_WRITE)) { |
| 257 | continue; |
| 258 | } |
| 259 | |
| 260 | // Rest of the line is event body. |
| 261 | leftIndex = rightIndex + 1; |
| 262 | while (Character.isWhitespace(line.charAt(leftIndex))) { |
| 263 | ++leftIndex; |
| 264 | } |
| 265 | |
| 266 | final String event = line.substring(leftIndex); |
| 267 | if (event.startsWith(TRACE_EVENT_CLOCK_SYNC)) { |
| 268 | continue; |
| 269 | } |
| 270 | |
| 271 | // Parse event, for example: |
| 272 | // B|615|SurfaceView - android.gameperformance.GamePerformanceActivity#0: 1 |
| 273 | // E|615 |
| 274 | // C|11253|operation id|2 |
| 275 | StringTokenizer eventTokenizer = new StringTokenizer(event, "|"); |
| 276 | final String eventType = eventTokenizer.nextToken(); |
| 277 | |
| 278 | // Attach root on demand. |
| 279 | if (!result.containsKey(threadId)) { |
| 280 | result.put(threadId, new RawEvent(null /* parent */, |
| 281 | timeStampMcs, |
| 282 | "#ROOT_" + threadId)); |
| 283 | } |
| 284 | |
| 285 | switch (eventType) { |
| 286 | case "B": { |
| 287 | // Log entry starts. |
| 288 | eventTokenizer.nextToken(); // PID |
| 289 | String eventText = eventTokenizer.nextToken(); |
| 290 | while (eventTokenizer.hasMoreTokens()) { |
| 291 | eventText += " "; |
| 292 | eventText += eventTokenizer.nextToken(); |
| 293 | } |
| 294 | RawEvent parent = result.get(threadId); |
| 295 | RawEvent current = new RawEvent(parent, timeStampMcs, eventText); |
| 296 | parent.mChildren.add(current); |
| 297 | result.put(threadId, current); |
| 298 | } |
| 299 | break; |
| 300 | case "E": { |
| 301 | // Log entry ends. |
| 302 | RawEvent current = result.get(threadId); |
| 303 | current.mDuration = timeStampMcs - current.mTime; |
| 304 | if (current.mParent == null) { |
| 305 | // Detect a tail of the previous call. Remove last child element if it |
| 306 | // exists once it does not belong to the root. |
| 307 | if (!current.mChildren.isEmpty()) { |
| 308 | current.mChildren.remove(current.mChildren.size() -1); |
| 309 | } |
| 310 | } else { |
| 311 | result.put(threadId, current.mParent); |
| 312 | } |
| 313 | } |
| 314 | break; |
| 315 | case "C": |
| 316 | // Counter, ignore |
| 317 | break; |
| 318 | default: |
| 319 | throw new IllegalStateException( |
| 320 | "Unrecognized trace: " + line + " # " + eventType + " # " + event); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | // Detect incomplete events and detach from the root. |
| 325 | Set<Integer> threadIds = new TreeSet<>(); |
| 326 | threadIds.addAll(result.keySet()); |
| 327 | for (int threadId : threadIds) { |
| 328 | RawEvent root = result.get(threadId); |
| 329 | if (root.mParent == null) { |
| 330 | // Last trace was closed. |
| 331 | continue; |
| 332 | } |
| 333 | // Find the root. |
| 334 | while (root.mParent != null) { |
| 335 | root = root.mParent; |
| 336 | } |
| 337 | // Discard latest incomplete element. |
| 338 | root.mChildren.remove(root.mChildren.size() - 1); |
| 339 | result.put(threadId, root); |
| 340 | } |
| 341 | } catch (Exception e) { |
| 342 | throw new IOException("Failed to process " + line, e); |
| 343 | } finally { |
| 344 | Utils.closeQuietly(bufferedReader); |
| 345 | } |
| 346 | |
| 347 | return result; |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Processes provided atrace log and calculates graphics buffer metrics. |
| 352 | * @param fileName name of atrace log file. |
| 353 | * @param testTag tag to separate results for the different passes. |
| 354 | */ |
| 355 | public static Map<String, Double> processGraphicBufferResult( |
| 356 | String fileName, String testTag) throws IOException { |
| 357 | final Map<Integer, RawEvent> model = buildEventModel(fileName); |
| 358 | |
| 359 | List<RawEvent> collectorPostBuffer = new ArrayList<>(); |
| 360 | List<RawEvent> collectorQueueBuffer = new ArrayList<>(); |
| 361 | List<RawEvent> collectorReleaseBuffer = new ArrayList<>(); |
| 362 | List<RawEvent> collectorAcquireBuffer = new ArrayList<>(); |
| 363 | |
| 364 | // Collect required events. |
| 365 | for (RawEvent root : model.values()) { |
| 366 | // Surface view |
| 367 | root.findEvents("localPostBuffer", collectorPostBuffer); |
| 368 | // OpengGL view |
| 369 | root.findEvents("eglSwapBuffersWithDamageKHR", collectorPostBuffer); |
| 370 | |
| 371 | root.findEvents("queueBuffer", collectorQueueBuffer); |
| 372 | root.findEvents("onMessageReceived/handleMessageInvalidate/latchBuffer/" + |
| 373 | "updateTexImage/acquireBuffer", |
| 374 | collectorAcquireBuffer); |
| 375 | // PI stack |
| 376 | root.findEvents( |
| 377 | "onMessageReceived/handleMessageRefresh/postComposition/releaseBuffer", |
| 378 | collectorReleaseBuffer); |
| 379 | // NYC stack |
| 380 | root.findEvents( |
| 381 | "onMessageReceived/handleMessageRefresh/releaseBuffer", |
| 382 | collectorReleaseBuffer); |
| 383 | } |
| 384 | |
| 385 | // Convert raw event to buffer events. |
| 386 | List<BufferEvent> bufferEvents = new ArrayList<>(); |
| 387 | for (RawEvent event : collectorPostBuffer) { |
| 388 | bufferEvents.add( |
| 389 | new BufferEvent(EVENT_POST_BUFFER, event.mTime, event.mDuration, null)); |
| 390 | } |
| 391 | toBufferEvents(EVENT_QUEUE_BUFFER, collectorQueueBuffer, bufferEvents); |
| 392 | toBufferEvents(EVENT_ACQUIRE_BUFFER, collectorAcquireBuffer, bufferEvents); |
| 393 | toBufferEvents(EVENT_RELEASE_BUFFER, collectorReleaseBuffer, bufferEvents); |
| 394 | |
| 395 | // Sort events based on time. These events are originally taken from different threads so |
| 396 | // order is not always preserved. |
| 397 | Collections.sort(bufferEvents, new Comparator<BufferEvent>() { |
| 398 | @Override |
| 399 | public int compare(BufferEvent o1, BufferEvent o2) { |
| 400 | if (o1.mTime < o2.mTime) { |
| 401 | return -1; |
| 402 | } if (o1.mTime > o2.mTime) { |
| 403 | return +1; |
| 404 | } else { |
| 405 | return 0; |
| 406 | } |
| 407 | } |
| 408 | }); |
| 409 | |
| 410 | // Collect samples. |
| 411 | List<Long> postTimes = new ArrayList<>(); |
| 412 | List<Long> readyTimes = new ArrayList<>(); |
| 413 | List<Long> latencyTimes = new ArrayList<>(); |
| 414 | long missedCnt = 0; |
| 415 | |
| 416 | for (int i = 0; i < bufferEvents.size(); ++i) { |
| 417 | if (bufferEvents.get(i).mType != EVENT_POST_BUFFER) { |
| 418 | continue; |
| 419 | } |
| 420 | final int queueIndex = findNextOfType(bufferEvents, i + 1, EVENT_QUEUE_BUFFER); |
| 421 | if (queueIndex < 0) { |
| 422 | break; |
| 423 | } |
| 424 | final int acquireIndex = findNextOfBufferId(bufferEvents, queueIndex + 1, |
| 425 | bufferEvents.get(queueIndex).mBufferId); |
| 426 | if (acquireIndex < 0) { |
| 427 | break; |
| 428 | } |
| 429 | if (bufferEvents.get(acquireIndex).mType != EVENT_ACQUIRE_BUFFER) { |
| 430 | // Was not actually presented. |
| 431 | ++missedCnt; |
| 432 | continue; |
| 433 | } |
| 434 | final int releaseIndex = findNextOfBufferId(bufferEvents, acquireIndex + 1, |
| 435 | bufferEvents.get(queueIndex).mBufferId); |
| 436 | if (releaseIndex < 0) { |
| 437 | break; |
| 438 | } |
| 439 | if (bufferEvents.get(releaseIndex).mType != EVENT_RELEASE_BUFFER) { |
| 440 | // Was not actually presented. |
| 441 | ++missedCnt; |
| 442 | continue; |
| 443 | } |
| 444 | |
| 445 | postTimes.add(bufferEvents.get(i).mDuration); |
| 446 | readyTimes.add( |
| 447 | bufferEvents.get(acquireIndex).mTime - bufferEvents.get(i).mTime); |
| 448 | latencyTimes.add( |
| 449 | bufferEvents.get(releaseIndex).mTime - bufferEvents.get(i).mTime); |
| 450 | } |
| 451 | |
| 452 | if (postTimes.size() < MINIMAL_SAMPLE_CNT_TO_PASS) { |
| 453 | throw new IllegalStateException("Too few sample cnt: " + postTimes.size() +". " + |
| 454 | MINIMAL_SAMPLE_CNT_TO_PASS + " is required."); |
| 455 | } |
| 456 | |
| 457 | Map<String, Double> status = new TreeMap<>(); |
| 458 | addResults(status, testTag, KEY_POST_TIME, postTimes); |
| 459 | addResults(status, testTag, KEY_READY_TIME, readyTimes); |
| 460 | addResults(status, testTag, KEY_LATENCY, latencyTimes); |
| 461 | status.put(testTag + "_" + KEY_MISSED_FRAME_RATE, |
| 462 | 100.0 * missedCnt / (missedCnt + postTimes.size())); |
| 463 | return status; |
| 464 | } |
| 465 | |
| 466 | private static void addResults( |
| 467 | Map<String, Double> status, String tag, String key, List<Long> times) { |
| 468 | Collections.sort(times); |
| 469 | long min = times.get(0); |
| 470 | long max = times.get(0); |
| 471 | for (long time : times) { |
| 472 | min = Math.min(min, time); |
| 473 | max = Math.max(max, time); |
| 474 | } |
| 475 | status.put(tag + "_" + key + "_" + SUFFIX_MIN, (double)min); |
| 476 | status.put(tag + "_" + key + "_" + SUFFIX_MAX, (double)max); |
| 477 | status.put(tag + "_" + key + "_" + SUFFIX_MEDIAN, (double)times.get(times.size() / 2)); |
| 478 | } |
| 479 | |
| 480 | // Helper to convert surface flinger events to buffer events. |
| 481 | private static void toBufferEvents( |
| 482 | int type, List<RawEvent> rawEvents, List<BufferEvent> bufferEvents) { |
| 483 | for (RawEvent event : rawEvents) { |
| 484 | if (event.mChildren.isEmpty()) { |
| 485 | throw new IllegalStateException("Buffer name is expected"); |
| 486 | } |
| 487 | final String bufferName = event.mChildren.get(0).mName; |
| 488 | if (bufferName.startsWith("SurfaceView - android.gameperformance")) { |
| 489 | bufferEvents.add( |
| 490 | new BufferEvent(type, event.mTime, event.mDuration, bufferName)); |
| 491 | } |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | private static int findNextOfType(List<BufferEvent> events, int startIndex, int type) { |
| 496 | for (int i = startIndex; i < events.size(); ++i) { |
| 497 | if (events.get(i).mType == type) { |
| 498 | return i; |
| 499 | } |
| 500 | } |
| 501 | return -1; |
| 502 | } |
| 503 | |
| 504 | private static int findNextOfBufferId( |
| 505 | List<BufferEvent> events, int startIndex, String bufferId) { |
| 506 | for (int i = startIndex; i < events.size(); ++i) { |
| 507 | if (bufferId.equals(events.get(i).mBufferId)) { |
| 508 | return i; |
| 509 | } |
| 510 | } |
| 511 | return -1; |
| 512 | } |
| 513 | |
| 514 | public static void main(String[] args) { |
| 515 | if (args.length != 1) { |
| 516 | System.err.println("Usage: " + TAG + " atrace.log"); |
| 517 | return; |
| 518 | } |
| 519 | |
| 520 | try { |
| 521 | System.out.println("Results:"); |
| 522 | for (Map.Entry<?, ?> entry : |
| 523 | processGraphicBufferResult(args[0], "default").entrySet()) { |
| 524 | System.out.println(" " + entry.getKey() + " = " + entry.getValue()); |
| 525 | } |
| 526 | } catch (IOException e) { |
| 527 | e.printStackTrace(); |
| 528 | } |
| 529 | } |
| 530 | } |