StatsdStats.cpp revision 932ececa1674c59a8da9f3e32d2651e781b86fc4
1/* 2 * Copyright 2017, 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#define DEBUG false // STOPSHIP if true 17#include "Log.h" 18 19#include "StatsdStats.h" 20 21#include <android/util/ProtoOutputStream.h> 22#include "../stats_log_util.h" 23#include "statslog.h" 24 25namespace android { 26namespace os { 27namespace statsd { 28 29using android::util::FIELD_COUNT_REPEATED; 30using android::util::FIELD_TYPE_BOOL; 31using android::util::FIELD_TYPE_FLOAT; 32using android::util::FIELD_TYPE_INT32; 33using android::util::FIELD_TYPE_INT64; 34using android::util::FIELD_TYPE_MESSAGE; 35using android::util::FIELD_TYPE_STRING; 36using android::util::ProtoOutputStream; 37using std::lock_guard; 38using std::map; 39using std::string; 40using std::vector; 41 42const int FIELD_ID_BEGIN_TIME = 1; 43const int FIELD_ID_END_TIME = 2; 44const int FIELD_ID_CONFIG_STATS = 3; 45const int FIELD_ID_ATOM_STATS = 7; 46const int FIELD_ID_UIDMAP_STATS = 8; 47const int FIELD_ID_ANOMALY_ALARM_STATS = 9; 48// const int FIELD_ID_PULLED_ATOM_STATS = 10; // The proto is written in stats_log_util.cpp 49const int FIELD_ID_LOGGER_ERROR_STATS = 11; 50const int FIELD_ID_SUBSCRIBER_ALARM_STATS = 12; 51 52const int FIELD_ID_ATOM_STATS_TAG = 1; 53const int FIELD_ID_ATOM_STATS_COUNT = 2; 54 55const int FIELD_ID_ANOMALY_ALARMS_REGISTERED = 1; 56const int FIELD_ID_SUBSCRIBER_ALARMS_REGISTERED = 1; 57 58const int FIELD_ID_LOGGER_STATS_TIME = 1; 59const int FIELD_ID_LOGGER_STATS_ERROR_CODE = 2; 60 61std::map<int, long> StatsdStats::kPullerCooldownMap = { 62 {android::util::KERNEL_WAKELOCK, 1}, 63 {android::util::WIFI_BYTES_TRANSFER, 1}, 64 {android::util::MOBILE_BYTES_TRANSFER, 1}, 65 {android::util::WIFI_BYTES_TRANSFER_BY_FG_BG, 1}, 66 {android::util::MOBILE_BYTES_TRANSFER_BY_FG_BG, 1}, 67 {android::util::SUBSYSTEM_SLEEP_STATE, 1}, 68 {android::util::CPU_TIME_PER_FREQ, 1}, 69 {android::util::CPU_TIME_PER_UID, 1}, 70 {android::util::CPU_TIME_PER_UID_FREQ, 1}, 71}; 72 73// TODO: add stats for pulled atoms. 74StatsdStats::StatsdStats() { 75 mPushedAtomStats.resize(android::util::kMaxPushedAtomId + 1); 76 mStartTimeSec = getWallClockSec(); 77} 78 79StatsdStats& StatsdStats::getInstance() { 80 static StatsdStats statsInstance; 81 return statsInstance; 82} 83 84void StatsdStats::addToIceBoxLocked(const StatsdStatsReport_ConfigStats& stats) { 85 // The size of mIceBox grows strictly by one at a time. It won't be > kMaxIceBoxSize. 86 if (mIceBox.size() == kMaxIceBoxSize) { 87 mIceBox.pop_front(); 88 } 89 mIceBox.push_back(stats); 90} 91 92void StatsdStats::noteConfigReceived(const ConfigKey& key, int metricsCount, int conditionsCount, 93 int matchersCount, int alertsCount, bool isValid) { 94 lock_guard<std::mutex> lock(mLock); 95 int32_t nowTimeSec = getWallClockSec(); 96 97 // If there is an existing config for the same key, icebox the old config. 98 noteConfigRemovedInternalLocked(key); 99 100 StatsdStatsReport_ConfigStats configStats; 101 configStats.set_uid(key.GetUid()); 102 configStats.set_id(key.GetId()); 103 configStats.set_creation_time_sec(nowTimeSec); 104 configStats.set_metric_count(metricsCount); 105 configStats.set_condition_count(conditionsCount); 106 configStats.set_matcher_count(matchersCount); 107 configStats.set_alert_count(alertsCount); 108 configStats.set_is_valid(isValid); 109 110 if (isValid) { 111 mConfigStats[key] = configStats; 112 } else { 113 configStats.set_deletion_time_sec(nowTimeSec); 114 addToIceBoxLocked(configStats); 115 } 116} 117 118void StatsdStats::noteConfigRemovedInternalLocked(const ConfigKey& key) { 119 auto it = mConfigStats.find(key); 120 if (it != mConfigStats.end()) { 121 int32_t nowTimeSec = getWallClockSec(); 122 it->second.set_deletion_time_sec(nowTimeSec); 123 // Add condition stats, metrics stats, matcher stats, alert stats 124 addSubStatsToConfigLocked(key, it->second); 125 // Remove them after they are added to the config stats. 126 mMatcherStats.erase(key); 127 mMetricsStats.erase(key); 128 mAlertStats.erase(key); 129 mConditionStats.erase(key); 130 addToIceBoxLocked(it->second); 131 mConfigStats.erase(it); 132 } 133} 134 135void StatsdStats::noteConfigRemoved(const ConfigKey& key) { 136 lock_guard<std::mutex> lock(mLock); 137 noteConfigRemovedInternalLocked(key); 138} 139 140void StatsdStats::noteBroadcastSent(const ConfigKey& key) { 141 noteBroadcastSent(key, getWallClockSec()); 142} 143 144void StatsdStats::noteBroadcastSent(const ConfigKey& key, int32_t timeSec) { 145 lock_guard<std::mutex> lock(mLock); 146 auto it = mConfigStats.find(key); 147 if (it == mConfigStats.end()) { 148 ALOGE("Config key %s not found!", key.ToString().c_str()); 149 return; 150 } 151 if (it->second.broadcast_sent_time_sec_size() >= kMaxTimestampCount) { 152 auto timestampList = it->second.mutable_broadcast_sent_time_sec(); 153 // This is O(N) operation. It shouldn't happen often, and N is only 20. 154 timestampList->erase(timestampList->begin()); 155 } 156 it->second.add_broadcast_sent_time_sec(timeSec); 157} 158 159void StatsdStats::noteDataDropped(const ConfigKey& key) { 160 noteDataDropped(key, getWallClockSec()); 161} 162 163void StatsdStats::noteDataDropped(const ConfigKey& key, int32_t timeSec) { 164 lock_guard<std::mutex> lock(mLock); 165 auto it = mConfigStats.find(key); 166 if (it == mConfigStats.end()) { 167 ALOGE("Config key %s not found!", key.ToString().c_str()); 168 return; 169 } 170 if (it->second.data_drop_time_sec_size() >= kMaxTimestampCount) { 171 auto timestampList = it->second.mutable_data_drop_time_sec(); 172 // This is O(N) operation. It shouldn't happen often, and N is only 20. 173 timestampList->erase(timestampList->begin()); 174 } 175 it->second.add_data_drop_time_sec(timeSec); 176} 177 178void StatsdStats::noteMetricsReportSent(const ConfigKey& key) { 179 noteMetricsReportSent(key, getWallClockSec()); 180} 181 182void StatsdStats::noteMetricsReportSent(const ConfigKey& key, int32_t timeSec) { 183 lock_guard<std::mutex> lock(mLock); 184 auto it = mConfigStats.find(key); 185 if (it == mConfigStats.end()) { 186 ALOGE("Config key %s not found!", key.ToString().c_str()); 187 return; 188 } 189 if (it->second.dump_report_time_sec_size() >= kMaxTimestampCount) { 190 auto timestampList = it->second.mutable_dump_report_time_sec(); 191 // This is O(N) operation. It shouldn't happen often, and N is only 20. 192 timestampList->erase(timestampList->begin()); 193 } 194 it->second.add_dump_report_time_sec(timeSec); 195} 196 197void StatsdStats::noteUidMapDropped(int snapshots, int deltas) { 198 lock_guard<std::mutex> lock(mLock); 199 mUidMapStats.set_dropped_snapshots(mUidMapStats.dropped_snapshots() + snapshots); 200 mUidMapStats.set_dropped_changes(mUidMapStats.dropped_changes() + deltas); 201} 202 203void StatsdStats::setUidMapSnapshots(int snapshots) { 204 lock_guard<std::mutex> lock(mLock); 205 mUidMapStats.set_snapshots(snapshots); 206} 207 208void StatsdStats::setUidMapChanges(int changes) { 209 lock_guard<std::mutex> lock(mLock); 210 mUidMapStats.set_changes(changes); 211} 212 213void StatsdStats::setCurrentUidMapMemory(int bytes) { 214 lock_guard<std::mutex> lock(mLock); 215 mUidMapStats.set_bytes_used(bytes); 216} 217 218void StatsdStats::noteConditionDimensionSize(const ConfigKey& key, const int64_t& id, int size) { 219 lock_guard<std::mutex> lock(mLock); 220 // if name doesn't exist before, it will create the key with count 0. 221 auto& conditionSizeMap = mConditionStats[key]; 222 if (size > conditionSizeMap[id]) { 223 conditionSizeMap[id] = size; 224 } 225} 226 227void StatsdStats::noteMetricDimensionSize(const ConfigKey& key, const int64_t& id, int size) { 228 lock_guard<std::mutex> lock(mLock); 229 // if name doesn't exist before, it will create the key with count 0. 230 auto& metricsDimensionMap = mMetricsStats[key]; 231 if (size > metricsDimensionMap[id]) { 232 metricsDimensionMap[id] = size; 233 } 234} 235 236void StatsdStats::noteMatcherMatched(const ConfigKey& key, const int64_t& id) { 237 lock_guard<std::mutex> lock(mLock); 238 auto& matcherStats = mMatcherStats[key]; 239 matcherStats[id]++; 240} 241 242void StatsdStats::noteAnomalyDeclared(const ConfigKey& key, const int64_t& id) { 243 lock_guard<std::mutex> lock(mLock); 244 auto& alertStats = mAlertStats[key]; 245 alertStats[id]++; 246} 247 248void StatsdStats::noteRegisteredAnomalyAlarmChanged() { 249 lock_guard<std::mutex> lock(mLock); 250 mAnomalyAlarmRegisteredStats++; 251} 252 253void StatsdStats::noteRegisteredPeriodicAlarmChanged() { 254 lock_guard<std::mutex> lock(mLock); 255 mPeriodicAlarmRegisteredStats++; 256} 257 258void StatsdStats::updateMinPullIntervalSec(int pullAtomId, long intervalSec) { 259 lock_guard<std::mutex> lock(mLock); 260 mPulledAtomStats[pullAtomId].minPullIntervalSec = intervalSec; 261} 262 263void StatsdStats::notePull(int pullAtomId) { 264 lock_guard<std::mutex> lock(mLock); 265 mPulledAtomStats[pullAtomId].totalPull++; 266} 267 268void StatsdStats::notePullFromCache(int pullAtomId) { 269 lock_guard<std::mutex> lock(mLock); 270 mPulledAtomStats[pullAtomId].totalPullFromCache++; 271} 272 273void StatsdStats::noteAtomLogged(int atomId, int32_t timeSec) { 274 lock_guard<std::mutex> lock(mLock); 275 276 if (atomId > android::util::kMaxPushedAtomId) { 277 ALOGW("not interested in atom %d", atomId); 278 return; 279 } 280 281 mPushedAtomStats[atomId]++; 282} 283 284void StatsdStats::noteLoggerError(int error) { 285 lock_guard<std::mutex> lock(mLock); 286 // grows strictly one at a time. so it won't > kMaxLoggerErrors 287 if (mLoggerErrors.size() == kMaxLoggerErrors) { 288 mLoggerErrors.pop_front(); 289 } 290 mLoggerErrors.push_back(std::make_pair(getWallClockSec(), error)); 291} 292 293void StatsdStats::reset() { 294 lock_guard<std::mutex> lock(mLock); 295 resetInternalLocked(); 296} 297 298void StatsdStats::resetInternalLocked() { 299 // Reset the historical data, but keep the active ConfigStats 300 mStartTimeSec = getWallClockSec(); 301 mIceBox.clear(); 302 mConditionStats.clear(); 303 mMetricsStats.clear(); 304 std::fill(mPushedAtomStats.begin(), mPushedAtomStats.end(), 0); 305 mAlertStats.clear(); 306 mAnomalyAlarmRegisteredStats = 0; 307 mPeriodicAlarmRegisteredStats = 0; 308 mMatcherStats.clear(); 309 mLoggerErrors.clear(); 310 for (auto& config : mConfigStats) { 311 config.second.clear_broadcast_sent_time_sec(); 312 config.second.clear_data_drop_time_sec(); 313 config.second.clear_dump_report_time_sec(); 314 config.second.clear_matcher_stats(); 315 config.second.clear_condition_stats(); 316 config.second.clear_metric_stats(); 317 config.second.clear_alert_stats(); 318 } 319} 320 321void StatsdStats::addSubStatsToConfigLocked(const ConfigKey& key, 322 StatsdStatsReport_ConfigStats& configStats) { 323 // Add matcher stats 324 if (mMatcherStats.find(key) != mMatcherStats.end()) { 325 const auto& matcherStats = mMatcherStats[key]; 326 for (const auto& stats : matcherStats) { 327 auto output = configStats.add_matcher_stats(); 328 output->set_id(stats.first); 329 output->set_matched_times(stats.second); 330 VLOG("matcher %lld matched %d times", 331 (long long)stats.first, stats.second); 332 } 333 } 334 // Add condition stats 335 if (mConditionStats.find(key) != mConditionStats.end()) { 336 const auto& conditionStats = mConditionStats[key]; 337 for (const auto& stats : conditionStats) { 338 auto output = configStats.add_condition_stats(); 339 output->set_id(stats.first); 340 output->set_max_tuple_counts(stats.second); 341 VLOG("condition %lld max output tuple size %d", 342 (long long)stats.first, stats.second); 343 } 344 } 345 // Add metrics stats 346 if (mMetricsStats.find(key) != mMetricsStats.end()) { 347 const auto& conditionStats = mMetricsStats[key]; 348 for (const auto& stats : conditionStats) { 349 auto output = configStats.add_metric_stats(); 350 output->set_id(stats.first); 351 output->set_max_tuple_counts(stats.second); 352 VLOG("metrics %lld max output tuple size %d", 353 (long long)stats.first, stats.second); 354 } 355 } 356 // Add anomaly detection alert stats 357 if (mAlertStats.find(key) != mAlertStats.end()) { 358 const auto& alertStats = mAlertStats[key]; 359 for (const auto& stats : alertStats) { 360 auto output = configStats.add_alert_stats(); 361 output->set_id(stats.first); 362 output->set_alerted_times(stats.second); 363 VLOG("alert %lld declared %d times", (long long)stats.first, stats.second); 364 } 365 } 366} 367 368void StatsdStats::dumpStats(FILE* out) const { 369 lock_guard<std::mutex> lock(mLock); 370 time_t t = mStartTimeSec; 371 struct tm* tm = localtime(&t); 372 char timeBuffer[80]; 373 strftime(timeBuffer, sizeof(timeBuffer), "%Y-%m-%d %I:%M%p\n", tm); 374 fprintf(out, "Stats collection start second: %s\n", timeBuffer); 375 fprintf(out, "%lu Config in icebox: \n", (unsigned long)mIceBox.size()); 376 for (const auto& configStats : mIceBox) { 377 fprintf(out, 378 "Config {%d-%lld}: creation=%d, deletion=%d, #metric=%d, #condition=%d, " 379 "#matcher=%d, #alert=%d, valid=%d\n", 380 configStats.uid(), (long long)configStats.id(), configStats.creation_time_sec(), 381 configStats.deletion_time_sec(), configStats.metric_count(), 382 configStats.condition_count(), configStats.matcher_count(), 383 configStats.alert_count(), configStats.is_valid()); 384 385 for (const auto& broadcastTime : configStats.broadcast_sent_time_sec()) { 386 fprintf(out, "\tbroadcast time: %d\n", broadcastTime); 387 } 388 389 for (const auto& dataDropTime : configStats.data_drop_time_sec()) { 390 fprintf(out, "\tdata drop time: %d\n", dataDropTime); 391 } 392 } 393 fprintf(out, "%lu Active Configs\n", (unsigned long)mConfigStats.size()); 394 for (auto& pair : mConfigStats) { 395 auto& key = pair.first; 396 auto& configStats = pair.second; 397 398 fprintf(out, 399 "Config {%d-%lld}: creation=%d, deletion=%d, #metric=%d, #condition=%d, " 400 "#matcher=%d, #alert=%d, valid=%d\n", 401 configStats.uid(), (long long)configStats.id(), configStats.creation_time_sec(), 402 configStats.deletion_time_sec(), configStats.metric_count(), 403 configStats.condition_count(), configStats.matcher_count(), 404 configStats.alert_count(), configStats.is_valid()); 405 for (const auto& broadcastTime : configStats.broadcast_sent_time_sec()) { 406 fprintf(out, "\tbroadcast time: %d\n", broadcastTime); 407 } 408 409 for (const auto& dataDropTime : configStats.data_drop_time_sec()) { 410 fprintf(out, "\tdata drop time: %d\n", dataDropTime); 411 } 412 413 for (const auto& dumpTime : configStats.dump_report_time_sec()) { 414 fprintf(out, "\tdump report time: %d\n", dumpTime); 415 } 416 417 // Add matcher stats 418 auto matcherIt = mMatcherStats.find(key); 419 if (matcherIt != mMatcherStats.end()) { 420 const auto& matcherStats = matcherIt->second; 421 for (const auto& stats : matcherStats) { 422 fprintf(out, "matcher %lld matched %d times\n", (long long)stats.first, 423 stats.second); 424 } 425 } 426 // Add condition stats 427 auto conditionIt = mConditionStats.find(key); 428 if (conditionIt != mConditionStats.end()) { 429 const auto& conditionStats = conditionIt->second; 430 for (const auto& stats : conditionStats) { 431 fprintf(out, "condition %lld max output tuple size %d\n", (long long)stats.first, 432 stats.second); 433 } 434 } 435 // Add metrics stats 436 auto metricIt = mMetricsStats.find(key); 437 if (metricIt != mMetricsStats.end()) { 438 const auto& conditionStats = metricIt->second; 439 for (const auto& stats : conditionStats) { 440 fprintf(out, "metrics %lld max output tuple size %d\n", (long long)stats.first, 441 stats.second); 442 } 443 } 444 // Add anomaly detection alert stats 445 auto alertIt = mAlertStats.find(key); 446 if (alertIt != mAlertStats.end()) { 447 const auto& alertStats = alertIt->second; 448 for (const auto& stats : alertStats) { 449 fprintf(out, "alert %lld declared %d times\n", (long long)stats.first, 450 stats.second); 451 } 452 } 453 } 454 fprintf(out, "********Pushed Atom stats***********\n"); 455 const size_t atomCounts = mPushedAtomStats.size(); 456 for (size_t i = 2; i < atomCounts; i++) { 457 if (mPushedAtomStats[i] > 0) { 458 fprintf(out, "Atom %lu->%d\n", (unsigned long)i, mPushedAtomStats[i]); 459 } 460 } 461 462 fprintf(out, "********Pulled Atom stats***********\n"); 463 for (const auto& pair : mPulledAtomStats) { 464 fprintf(out, "Atom %d->%ld, %ld, %ld\n", (int)pair.first, (long)pair.second.totalPull, 465 (long)pair.second.totalPullFromCache, (long)pair.second.minPullIntervalSec); 466 } 467 468 if (mAnomalyAlarmRegisteredStats > 0) { 469 fprintf(out, "********AnomalyAlarmStats stats***********\n"); 470 fprintf(out, "Anomaly alarm registrations: %d\n", mAnomalyAlarmRegisteredStats); 471 } 472 473 if (mPeriodicAlarmRegisteredStats > 0) { 474 fprintf(out, "********SubscriberAlarmStats stats***********\n"); 475 fprintf(out, "Subscriber alarm registrations: %d\n", mPeriodicAlarmRegisteredStats); 476 } 477 478 fprintf(out, 479 "UID map stats: bytes=%d, snapshots=%d, changes=%d, snapshots lost=%d, changes " 480 "lost=%d\n", 481 mUidMapStats.bytes_used(), mUidMapStats.snapshots(), mUidMapStats.changes(), 482 mUidMapStats.dropped_snapshots(), mUidMapStats.dropped_changes()); 483 484 for (const auto& error : mLoggerErrors) { 485 time_t error_time = error.first; 486 struct tm* error_tm = localtime(&error_time); 487 char buffer[80]; 488 strftime(buffer, sizeof(buffer), "%Y-%m-%d %I:%M%p\n", error_tm); 489 fprintf(out, "Logger error %d at %s\n", error.second, buffer); 490 } 491} 492 493void StatsdStats::dumpStats(std::vector<uint8_t>* output, bool reset) { 494 lock_guard<std::mutex> lock(mLock); 495 496 ProtoOutputStream proto; 497 proto.write(FIELD_TYPE_INT32 | FIELD_ID_BEGIN_TIME, mStartTimeSec); 498 proto.write(FIELD_TYPE_INT32 | FIELD_ID_END_TIME, (int32_t)getWallClockSec()); 499 500 for (const auto& configStats : mIceBox) { 501 const int numBytes = configStats.ByteSize(); 502 vector<char> buffer(numBytes); 503 configStats.SerializeToArray(&buffer[0], numBytes); 504 proto.write(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_CONFIG_STATS, &buffer[0], 505 buffer.size()); 506 } 507 508 for (auto& pair : mConfigStats) { 509 auto& configStats = pair.second; 510 addSubStatsToConfigLocked(pair.first, configStats); 511 512 const int numBytes = configStats.ByteSize(); 513 vector<char> buffer(numBytes); 514 configStats.SerializeToArray(&buffer[0], numBytes); 515 proto.write(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_CONFIG_STATS, &buffer[0], 516 buffer.size()); 517 // reset the sub stats, the source of truth is in the individual map 518 // they will be repopulated when dumpStats() is called again. 519 configStats.clear_matcher_stats(); 520 configStats.clear_condition_stats(); 521 configStats.clear_metric_stats(); 522 configStats.clear_alert_stats(); 523 } 524 525 const size_t atomCounts = mPushedAtomStats.size(); 526 for (size_t i = 2; i < atomCounts; i++) { 527 if (mPushedAtomStats[i] > 0) { 528 long long token = 529 proto.start(FIELD_TYPE_MESSAGE | FIELD_ID_ATOM_STATS | FIELD_COUNT_REPEATED); 530 proto.write(FIELD_TYPE_INT32 | FIELD_ID_ATOM_STATS_TAG, (int32_t)i); 531 proto.write(FIELD_TYPE_INT32 | FIELD_ID_ATOM_STATS_COUNT, mPushedAtomStats[i]); 532 proto.end(token); 533 } 534 } 535 536 for (const auto& pair : mPulledAtomStats) { 537 android::os::statsd::writePullerStatsToStream(pair, &proto); 538 } 539 540 if (mAnomalyAlarmRegisteredStats > 0) { 541 long long token = proto.start(FIELD_TYPE_MESSAGE | FIELD_ID_ANOMALY_ALARM_STATS); 542 proto.write(FIELD_TYPE_INT32 | FIELD_ID_ANOMALY_ALARMS_REGISTERED, 543 mAnomalyAlarmRegisteredStats); 544 proto.end(token); 545 } 546 547 if (mPeriodicAlarmRegisteredStats > 0) { 548 long long token = proto.start(FIELD_TYPE_MESSAGE | FIELD_ID_SUBSCRIBER_ALARM_STATS); 549 proto.write(FIELD_TYPE_INT32 | FIELD_ID_SUBSCRIBER_ALARMS_REGISTERED, 550 mPeriodicAlarmRegisteredStats); 551 proto.end(token); 552 } 553 554 const int numBytes = mUidMapStats.ByteSize(); 555 vector<char> buffer(numBytes); 556 mUidMapStats.SerializeToArray(&buffer[0], numBytes); 557 proto.write(FIELD_TYPE_MESSAGE | FIELD_ID_UIDMAP_STATS, &buffer[0], buffer.size()); 558 559 for (const auto& error : mLoggerErrors) { 560 long long token = proto.start(FIELD_TYPE_MESSAGE | FIELD_ID_LOGGER_ERROR_STATS | 561 FIELD_COUNT_REPEATED); 562 proto.write(FIELD_TYPE_INT32 | FIELD_ID_LOGGER_STATS_TIME, error.first); 563 proto.write(FIELD_TYPE_INT32 | FIELD_ID_LOGGER_STATS_ERROR_CODE, error.second); 564 proto.end(token); 565 } 566 567 output->clear(); 568 size_t bufferSize = proto.size(); 569 output->resize(bufferSize); 570 571 size_t pos = 0; 572 auto it = proto.data(); 573 while (it.readBuffer() != NULL) { 574 size_t toRead = it.currentToRead(); 575 std::memcpy(&((*output)[pos]), it.readBuffer(), toRead); 576 pos += toRead; 577 it.rp()->move(toRead); 578 } 579 580 if (reset) { 581 resetInternalLocked(); 582 } 583 584 VLOG("reset=%d, returned proto size %lu", reset, (unsigned long)bufferSize); 585} 586 587} // namespace statsd 588} // namespace os 589} // namespace android