services/surfaceflinger/TimeStats/timestatsproto/TimeStatsHelper.cpp - LeafOS-Project/android_frameworks_native - Gitiles

 /*
  * Copyright (C) 2017 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.
  */
 #include "timestatsproto/TimeStatsHelper.h"

 #include <android-base/stringprintf.h>
 #include <ftl/enum.h>

 #include <array>
 #include <cinttypes>

 #define HISTOGRAM_SIZE 85

 using android::base::StringAppendF;
 using android::base::StringPrintf;

 namespace android {
 namespace surfaceflinger {

 // Time buckets for histogram, the calculated time deltas will be lower bounded
 // to the buckets in this array.
 static const std::array<int32_t, HISTOGRAM_SIZE> histogramConfig =
         {0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   10,  11,  12,  13,  14,  15,  16,
          17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,  32,  33,
          34,  36,  38,  40,  42,  44,  46,  48,  50,  54,  58,  62,  66,  70,  74,  78,  82,
          86,  90,  94,  98,  102, 106, 110, 114, 118, 122, 126, 130, 134, 138, 142, 146, 150,
          200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000};

 void TimeStatsHelper::Histogram::insert(int32_t delta) {
     if (delta < 0) return;
     // std::lower_bound won't work on out of range values
     if (delta > histogramConfig[HISTOGRAM_SIZE - 1]) {
         hist[histogramConfig[HISTOGRAM_SIZE - 1]]++;
         return;
     }
     auto iter = std::lower_bound(histogramConfig.begin(), histogramConfig.end(), delta);
     hist[*iter]++;
 }

 int64_t TimeStatsHelper::Histogram::totalTime() const {
     int64_t ret = 0;
     for (const auto& ele : hist) {
         ret += ele.first * ele.second;
     }
     return ret;
 }

 float TimeStatsHelper::Histogram::averageTime() const {
     int64_t ret = 0;
     int64_t count = 0;
     for (const auto& ele : hist) {
         count += ele.second;
         ret += ele.first * ele.second;
     }
     return static_cast<float>(ret) / count;
 }

 std::string TimeStatsHelper::Histogram::toString() const {
     std::string result;
     for (int32_t i = 0; i < HISTOGRAM_SIZE; ++i) {
         int32_t bucket = histogramConfig[i];
         int32_t count = (hist.count(bucket) == 0) ? 0 : hist.at(bucket);
         StringAppendF(&result, "%dms=%d ", bucket, count);
     }
     result.back() = '\n';
     return result;
 }

 std::string TimeStatsHelper::JankPayload::toString() const {
     std::string result;
     StringAppendF(&result, "totalTimelineFrames = %d\n", totalFrames);
     StringAppendF(&result, "jankyFrames = %d\n", totalJankyFrames);
     StringAppendF(&result, "sfLongCpuJankyFrames = %d\n", totalSFLongCpu);
     StringAppendF(&result, "sfLongGpuJankyFrames = %d\n", totalSFLongGpu);
     StringAppendF(&result, "sfUnattributedJankyFrames = %d\n", totalSFUnattributed);
     StringAppendF(&result, "appUnattributedJankyFrames = %d\n", totalAppUnattributed);
     StringAppendF(&result, "sfSchedulingJankyFrames = %d\n", totalSFScheduling);
     StringAppendF(&result, "sfPredictionErrorJankyFrames = %d\n", totalSFPredictionError);
     StringAppendF(&result, "appBufferStuffingJankyFrames = %d\n", totalAppBufferStuffing);
     return result;
 }

 std::string TimeStatsHelper::SetFrameRateVote::toString() const {
     std::string result;
     StringAppendF(&result, "frameRate = %.2f\n", frameRate);
     StringAppendF(&result, "frameRateCompatibility = %s\n",
                   ftl::enum_string(frameRateCompatibility).c_str());
     StringAppendF(&result, "seamlessness = %s\n", ftl::enum_string(seamlessness).c_str());
     return result;
 }

 std::string TimeStatsHelper::TimeStatsLayer::toString() const {
     std::string result = "\n";
     StringAppendF(&result, "displayRefreshRate = %d fps\n", displayRefreshRateBucket);
     StringAppendF(&result, "renderRate = %d fps\n", renderRateBucket);
     StringAppendF(&result, "uid = %d\n", uid);
     StringAppendF(&result, "layerName = %s\n", layerName.c_str());
     StringAppendF(&result, "packageName = %s\n", packageName.c_str());
     StringAppendF(&result, "gameMode = %s\n", ftl::enum_string(gameMode).c_str());
     StringAppendF(&result, "totalFrames = %d\n", totalFrames);
     StringAppendF(&result, "droppedFrames = %d\n", droppedFrames);
     StringAppendF(&result, "lateAcquireFrames = %d\n", lateAcquireFrames);
     StringAppendF(&result, "badDesiredPresentFrames = %d\n", badDesiredPresentFrames);
     result.append("Jank payload for this layer:\n");
     result.append(jankPayload.toString());
     result.append("SetFrameRate vote for this layer:\n");
     result.append(setFrameRateVote.toString());
     const auto iter = deltas.find("present2present");
     if (iter != deltas.end()) {
         const float averageTime = iter->second.averageTime();
         const float averageFPS = averageTime < 1.0f ? 0.0f : 1000.0f / averageTime;
         StringAppendF(&result, "averageFPS = %.3f\n", averageFPS);
     }
     for (const auto& ele : deltas) {
         StringAppendF(&result, "%s histogram is as below:\n", ele.first.c_str());
         result.append(ele.second.toString());
     }

     return result;
 }

 std::string TimeStatsHelper::TimeStatsGlobal::toString(std::optional<uint32_t> maxLayers) const {
     std::string result = "SurfaceFlinger TimeStats:\n";
     result.append("Legacy stats are as follows:\n");
     StringAppendF(&result, "statsStart = %" PRId64 "\n", statsStartLegacy);
     StringAppendF(&result, "statsEnd = %" PRId64 "\n", statsEndLegacy);
     StringAppendF(&result, "totalFrames = %d\n", totalFramesLegacy);
     StringAppendF(&result, "missedFrames = %d\n", missedFramesLegacy);
     StringAppendF(&result, "clientCompositionFrames = %d\n", clientCompositionFramesLegacy);
     StringAppendF(&result, "clientCompositionReusedFrames = %d\n",
                   clientCompositionReusedFramesLegacy);
     StringAppendF(&result, "refreshRateSwitches = %d\n", refreshRateSwitchesLegacy);
     StringAppendF(&result, "compositionStrategyChanges = %d\n", compositionStrategyChangesLegacy);
     StringAppendF(&result, "compositionStrategyPredicted = %d\n",
                   compositionStrategyPredictedLegacy);
     StringAppendF(&result, "compositionStrategyPredictionSucceeded = %d\n",
                   compositionStrategyPredictionSucceededLegacy);
     StringAppendF(&result, "compositionStrategyPredictionFailed = %d\n",
                   compositionStrategyPredictedLegacy -
                           compositionStrategyPredictionSucceededLegacy);

     StringAppendF(&result, "displayOnTime = %" PRId64 " ms\n", displayOnTimeLegacy);
     StringAppendF(&result, "displayConfigStats is as below:\n");
     for (const auto& [fps, duration] : refreshRateStatsLegacy) {
         StringAppendF(&result, "%dfps = %ldms\n", fps, ns2ms(duration));
     }
     result.back() = '\n';
     StringAppendF(&result, "totalP2PTime = %" PRId64 " ms\n", presentToPresentLegacy.totalTime());
     StringAppendF(&result, "presentToPresent histogram is as below:\n");
     result.append(presentToPresentLegacy.toString());
     const float averageFrameDuration = frameDurationLegacy.averageTime();
     StringAppendF(&result, "averageFrameDuration = %.3f ms\n",
                   std::isnan(averageFrameDuration) ? 0.0f : averageFrameDuration);
     StringAppendF(&result, "frameDuration histogram is as below:\n");
     result.append(frameDurationLegacy.toString());
     const float averageRenderEngineTiming = renderEngineTimingLegacy.averageTime();
     StringAppendF(&result, "averageRenderEngineTiming = %.3f ms\n",
                   std::isnan(averageRenderEngineTiming) ? 0.0f : averageRenderEngineTiming);
     StringAppendF(&result, "renderEngineTiming histogram is as below:\n");
     result.append(renderEngineTimingLegacy.toString());

     result.append("\nGlobal aggregated jank payload (Timeline stats):");
     for (const auto& ele : stats) {
         result.append("\n");
         StringAppendF(&result, "displayRefreshRate = %d fps\n",
                       ele.second.key.displayRefreshRateBucket);
         StringAppendF(&result, "renderRate = %d fps\n", ele.second.key.renderRateBucket);
         result.append(ele.second.jankPayload.toString());
         StringAppendF(&result, "sfDeadlineMisses histogram is as below:\n");
         result.append(ele.second.displayDeadlineDeltas.toString());
         StringAppendF(&result, "sfPredictionErrors histogram is as below:\n");
         result.append(ele.second.displayPresentDeltas.toString());
     }

     const auto dumpStats = generateDumpStats(maxLayers);
     for (const auto& ele : dumpStats) {
         result.append(ele->toString());
     }

     return result;
 }

 SFTimeStatsLayerProto TimeStatsHelper::TimeStatsLayer::toProto() const {
     SFTimeStatsLayerProto layerProto;
     layerProto.set_layer_name(layerName);
     layerProto.set_package_name(packageName);
     layerProto.set_total_frames(totalFrames);
     layerProto.set_dropped_frames(droppedFrames);
     for (const auto& ele : deltas) {
         SFTimeStatsDeltaProto* deltaProto = layerProto.add_deltas();
         deltaProto->set_delta_name(ele.first);
         for (const auto& histEle : ele.second.hist) {
             SFTimeStatsHistogramBucketProto* histProto = deltaProto->add_histograms();
             histProto->set_time_millis(histEle.first);
             histProto->set_frame_count(histEle.second);
         }
     }
     return layerProto;
 }

 SFTimeStatsGlobalProto TimeStatsHelper::TimeStatsGlobal::toProto(
         std::optional<uint32_t> maxLayers) const {
     SFTimeStatsGlobalProto globalProto;
     globalProto.set_stats_start(statsStartLegacy);
     globalProto.set_stats_end(statsEndLegacy);
     globalProto.set_total_frames(totalFramesLegacy);
     globalProto.set_missed_frames(missedFramesLegacy);
     globalProto.set_client_composition_frames(clientCompositionFramesLegacy);
     globalProto.set_display_on_time(displayOnTimeLegacy);
     for (const auto& ele : refreshRateStatsLegacy) {
         SFTimeStatsDisplayConfigBucketProto* configBucketProto =
                 globalProto.add_display_config_stats();
         SFTimeStatsDisplayConfigProto* configProto = configBucketProto->mutable_config();
         configProto->set_fps(ele.first);
         configBucketProto->set_duration_millis(ns2ms(ele.second));
     }
     for (const auto& histEle : presentToPresentLegacy.hist) {
         SFTimeStatsHistogramBucketProto* histProto = globalProto.add_present_to_present();
         histProto->set_time_millis(histEle.first);
         histProto->set_frame_count(histEle.second);
     }
     for (const auto& histEle : frameDurationLegacy.hist) {
         SFTimeStatsHistogramBucketProto* histProto = globalProto.add_frame_duration();
         histProto->set_time_millis(histEle.first);
         histProto->set_frame_count(histEle.second);
     }
     for (const auto& histEle : renderEngineTimingLegacy.hist) {
         SFTimeStatsHistogramBucketProto* histProto = globalProto.add_render_engine_timing();
         histProto->set_time_millis(histEle.first);
         histProto->set_frame_count(histEle.second);
     }
     const auto dumpStats = generateDumpStats(maxLayers);
     for (const auto& ele : dumpStats) {
         SFTimeStatsLayerProto* layerProto = globalProto.add_stats();
         layerProto->CopyFrom(ele->toProto());
     }
     return globalProto;
 }

 std::vector<TimeStatsHelper::TimeStatsLayer const*>
 TimeStatsHelper::TimeStatsGlobal::generateDumpStats(std::optional<uint32_t> maxLayers) const {
     std::vector<TimeStatsLayer const*> dumpStats;

     int numLayers = 0;
     for (const auto& ele : stats) {
         numLayers += ele.second.stats.size();
     }

     dumpStats.reserve(numLayers);

     for (const auto& ele : stats) {
         for (const auto& layerEle : ele.second.stats) {
             dumpStats.push_back(&layerEle.second);
         }
     }

     std::sort(dumpStats.begin(), dumpStats.end(),
               [](TimeStatsHelper::TimeStatsLayer const* l,
                  TimeStatsHelper::TimeStatsLayer const* r) {
                   return l->totalFrames > r->totalFrames;
               });

     if (maxLayers && (*maxLayers < dumpStats.size())) {
         dumpStats.resize(*maxLayers);
     }
     return dumpStats;
 }

 } // namespace surfaceflinger
 } // namespace android
	/*
	* Copyright (C) 2017 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.
	*/
	#include "timestatsproto/TimeStatsHelper.h"

	#include <android-base/stringprintf.h>
	#include <ftl/enum.h>

	#include <array>
	#include <cinttypes>

	#define HISTOGRAM_SIZE 85

	using android::base::StringAppendF;
	using android::base::StringPrintf;

	namespace android {
	namespace surfaceflinger {

	// Time buckets for histogram, the calculated time deltas will be lower bounded
	// to the buckets in this array.
	static const std::array<int32_t, HISTOGRAM_SIZE> histogramConfig =
	{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
	17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
	34, 36, 38, 40, 42, 44, 46, 48, 50, 54, 58, 62, 66, 70, 74, 78, 82,
	86, 90, 94, 98, 102, 106, 110, 114, 118, 122, 126, 130, 134, 138, 142, 146, 150,
	200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000};

	void TimeStatsHelper::Histogram::insert(int32_t delta) {
	if (delta < 0) return;
	// std::lower_bound won't work on out of range values
	if (delta > histogramConfig[HISTOGRAM_SIZE - 1]) {
	hist[histogramConfig[HISTOGRAM_SIZE - 1]]++;
	return;
	}
	auto iter = std::lower_bound(histogramConfig.begin(), histogramConfig.end(), delta);
	hist[*iter]++;
	}

	int64_t TimeStatsHelper::Histogram::totalTime() const {
	int64_t ret = 0;
	for (const auto& ele : hist) {
	ret += ele.first * ele.second;
	}
	return ret;
	}

	float TimeStatsHelper::Histogram::averageTime() const {
	int64_t ret = 0;
	int64_t count = 0;
	for (const auto& ele : hist) {
	count += ele.second;
	ret += ele.first * ele.second;
	}
	return static_cast<float>(ret) / count;
	}

	std::string TimeStatsHelper::Histogram::toString() const {
	std::string result;
	for (int32_t i = 0; i < HISTOGRAM_SIZE; ++i) {
	int32_t bucket = histogramConfig[i];
	int32_t count = (hist.count(bucket) == 0) ? 0 : hist.at(bucket);
	StringAppendF(&result, "%dms=%d ", bucket, count);
	}
	result.back() = '\n';
	return result;
	}

	std::string TimeStatsHelper::JankPayload::toString() const {
	std::string result;
	StringAppendF(&result, "totalTimelineFrames = %d\n", totalFrames);
	StringAppendF(&result, "jankyFrames = %d\n", totalJankyFrames);
	StringAppendF(&result, "sfLongCpuJankyFrames = %d\n", totalSFLongCpu);
	StringAppendF(&result, "sfLongGpuJankyFrames = %d\n", totalSFLongGpu);
	StringAppendF(&result, "sfUnattributedJankyFrames = %d\n", totalSFUnattributed);
	StringAppendF(&result, "appUnattributedJankyFrames = %d\n", totalAppUnattributed);
	StringAppendF(&result, "sfSchedulingJankyFrames = %d\n", totalSFScheduling);
	StringAppendF(&result, "sfPredictionErrorJankyFrames = %d\n", totalSFPredictionError);
	StringAppendF(&result, "appBufferStuffingJankyFrames = %d\n", totalAppBufferStuffing);
	return result;
	}

	std::string TimeStatsHelper::SetFrameRateVote::toString() const {
	std::string result;
	StringAppendF(&result, "frameRate = %.2f\n", frameRate);
	StringAppendF(&result, "frameRateCompatibility = %s\n",
	ftl::enum_string(frameRateCompatibility).c_str());
	StringAppendF(&result, "seamlessness = %s\n", ftl::enum_string(seamlessness).c_str());
	return result;
	}

	std::string TimeStatsHelper::TimeStatsLayer::toString() const {
	std::string result = "\n";
	StringAppendF(&result, "displayRefreshRate = %d fps\n", displayRefreshRateBucket);
	StringAppendF(&result, "renderRate = %d fps\n", renderRateBucket);
	StringAppendF(&result, "uid = %d\n", uid);
	StringAppendF(&result, "layerName = %s\n", layerName.c_str());
	StringAppendF(&result, "packageName = %s\n", packageName.c_str());
	StringAppendF(&result, "gameMode = %s\n", ftl::enum_string(gameMode).c_str());
	StringAppendF(&result, "totalFrames = %d\n", totalFrames);
	StringAppendF(&result, "droppedFrames = %d\n", droppedFrames);
	StringAppendF(&result, "lateAcquireFrames = %d\n", lateAcquireFrames);
	StringAppendF(&result, "badDesiredPresentFrames = %d\n", badDesiredPresentFrames);
	result.append("Jank payload for this layer:\n");
	result.append(jankPayload.toString());
	result.append("SetFrameRate vote for this layer:\n");
	result.append(setFrameRateVote.toString());
	const auto iter = deltas.find("present2present");
	if (iter != deltas.end()) {
	const float averageTime = iter->second.averageTime();
	const float averageFPS = averageTime < 1.0f ? 0.0f : 1000.0f / averageTime;
	StringAppendF(&result, "averageFPS = %.3f\n", averageFPS);
	}
	for (const auto& ele : deltas) {
	StringAppendF(&result, "%s histogram is as below:\n", ele.first.c_str());
	result.append(ele.second.toString());
	}

	return result;
	}

	std::string TimeStatsHelper::TimeStatsGlobal::toString(std::optional<uint32_t> maxLayers) const {
	std::string result = "SurfaceFlinger TimeStats:\n";
	result.append("Legacy stats are as follows:\n");
	StringAppendF(&result, "statsStart = %" PRId64 "\n", statsStartLegacy);
	StringAppendF(&result, "statsEnd = %" PRId64 "\n", statsEndLegacy);
	StringAppendF(&result, "totalFrames = %d\n", totalFramesLegacy);
	StringAppendF(&result, "missedFrames = %d\n", missedFramesLegacy);
	StringAppendF(&result, "clientCompositionFrames = %d\n", clientCompositionFramesLegacy);
	StringAppendF(&result, "clientCompositionReusedFrames = %d\n",
	clientCompositionReusedFramesLegacy);
	StringAppendF(&result, "refreshRateSwitches = %d\n", refreshRateSwitchesLegacy);
	StringAppendF(&result, "compositionStrategyChanges = %d\n", compositionStrategyChangesLegacy);
	StringAppendF(&result, "compositionStrategyPredicted = %d\n",
	compositionStrategyPredictedLegacy);
	StringAppendF(&result, "compositionStrategyPredictionSucceeded = %d\n",
	compositionStrategyPredictionSucceededLegacy);
	StringAppendF(&result, "compositionStrategyPredictionFailed = %d\n",
	compositionStrategyPredictedLegacy -
	compositionStrategyPredictionSucceededLegacy);

	StringAppendF(&result, "displayOnTime = %" PRId64 " ms\n", displayOnTimeLegacy);
	StringAppendF(&result, "displayConfigStats is as below:\n");
	for (const auto& [fps, duration] : refreshRateStatsLegacy) {
	StringAppendF(&result, "%dfps = %ldms\n", fps, ns2ms(duration));
	}
	result.back() = '\n';
	StringAppendF(&result, "totalP2PTime = %" PRId64 " ms\n", presentToPresentLegacy.totalTime());
	StringAppendF(&result, "presentToPresent histogram is as below:\n");
	result.append(presentToPresentLegacy.toString());
	const float averageFrameDuration = frameDurationLegacy.averageTime();
	StringAppendF(&result, "averageFrameDuration = %.3f ms\n",
	std::isnan(averageFrameDuration) ? 0.0f : averageFrameDuration);
	StringAppendF(&result, "frameDuration histogram is as below:\n");
	result.append(frameDurationLegacy.toString());
	const float averageRenderEngineTiming = renderEngineTimingLegacy.averageTime();
	StringAppendF(&result, "averageRenderEngineTiming = %.3f ms\n",
	std::isnan(averageRenderEngineTiming) ? 0.0f : averageRenderEngineTiming);
	StringAppendF(&result, "renderEngineTiming histogram is as below:\n");
	result.append(renderEngineTimingLegacy.toString());

	result.append("\nGlobal aggregated jank payload (Timeline stats):");
	for (const auto& ele : stats) {
	result.append("\n");
	StringAppendF(&result, "displayRefreshRate = %d fps\n",
	ele.second.key.displayRefreshRateBucket);
	StringAppendF(&result, "renderRate = %d fps\n", ele.second.key.renderRateBucket);
	result.append(ele.second.jankPayload.toString());
	StringAppendF(&result, "sfDeadlineMisses histogram is as below:\n");
	result.append(ele.second.displayDeadlineDeltas.toString());
	StringAppendF(&result, "sfPredictionErrors histogram is as below:\n");
	result.append(ele.second.displayPresentDeltas.toString());
	}

	const auto dumpStats = generateDumpStats(maxLayers);
	for (const auto& ele : dumpStats) {
	result.append(ele->toString());
	}

	return result;
	}

	SFTimeStatsLayerProto TimeStatsHelper::TimeStatsLayer::toProto() const {
	SFTimeStatsLayerProto layerProto;
	layerProto.set_layer_name(layerName);
	layerProto.set_package_name(packageName);
	layerProto.set_total_frames(totalFrames);
	layerProto.set_dropped_frames(droppedFrames);
	for (const auto& ele : deltas) {
	SFTimeStatsDeltaProto* deltaProto = layerProto.add_deltas();
	deltaProto->set_delta_name(ele.first);
	for (const auto& histEle : ele.second.hist) {
	SFTimeStatsHistogramBucketProto* histProto = deltaProto->add_histograms();
	histProto->set_time_millis(histEle.first);
	histProto->set_frame_count(histEle.second);
	}
	}
	return layerProto;
	}

	SFTimeStatsGlobalProto TimeStatsHelper::TimeStatsGlobal::toProto(
	std::optional<uint32_t> maxLayers) const {
	SFTimeStatsGlobalProto globalProto;
	globalProto.set_stats_start(statsStartLegacy);
	globalProto.set_stats_end(statsEndLegacy);
	globalProto.set_total_frames(totalFramesLegacy);
	globalProto.set_missed_frames(missedFramesLegacy);
	globalProto.set_client_composition_frames(clientCompositionFramesLegacy);
	globalProto.set_display_on_time(displayOnTimeLegacy);
	for (const auto& ele : refreshRateStatsLegacy) {
	SFTimeStatsDisplayConfigBucketProto* configBucketProto =
	globalProto.add_display_config_stats();
	SFTimeStatsDisplayConfigProto* configProto = configBucketProto->mutable_config();
	configProto->set_fps(ele.first);
	configBucketProto->set_duration_millis(ns2ms(ele.second));
	}
	for (const auto& histEle : presentToPresentLegacy.hist) {
	SFTimeStatsHistogramBucketProto* histProto = globalProto.add_present_to_present();
	histProto->set_time_millis(histEle.first);
	histProto->set_frame_count(histEle.second);
	}
	for (const auto& histEle : frameDurationLegacy.hist) {
	SFTimeStatsHistogramBucketProto* histProto = globalProto.add_frame_duration();
	histProto->set_time_millis(histEle.first);
	histProto->set_frame_count(histEle.second);
	}
	for (const auto& histEle : renderEngineTimingLegacy.hist) {
	SFTimeStatsHistogramBucketProto* histProto = globalProto.add_render_engine_timing();
	histProto->set_time_millis(histEle.first);
	histProto->set_frame_count(histEle.second);
	}
	const auto dumpStats = generateDumpStats(maxLayers);
	for (const auto& ele : dumpStats) {
	SFTimeStatsLayerProto* layerProto = globalProto.add_stats();
	layerProto->CopyFrom(ele->toProto());
	}
	return globalProto;
	}

	std::vector<TimeStatsHelper::TimeStatsLayer const*>
	TimeStatsHelper::TimeStatsGlobal::generateDumpStats(std::optional<uint32_t> maxLayers) const {
	std::vector<TimeStatsLayer const*> dumpStats;

	int numLayers = 0;
	for (const auto& ele : stats) {
	numLayers += ele.second.stats.size();
	}

	dumpStats.reserve(numLayers);

	for (const auto& ele : stats) {
	for (const auto& layerEle : ele.second.stats) {
	dumpStats.push_back(&layerEle.second);
	}
	}

	std::sort(dumpStats.begin(), dumpStats.end(),
	[](TimeStatsHelper::TimeStatsLayer const* l,
	TimeStatsHelper::TimeStatsLayer const* r) {
	return l->totalFrames > r->totalFrames;
	});

	if (maxLayers && (*maxLayers < dumpStats.size())) {
	dumpStats.resize(*maxLayers);
	}
	return dumpStats;
	}

	} // namespace surfaceflinger
	} // namespace android