1 /* 2 * Copyright (C) 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 #include <android-base/stringprintf.h> 17 #include <timestatsproto/TimeStatsHelper.h> 18 19 #include <array> 20 21 #define HISTOGRAM_SIZE 85 22 23 using android::base::StringAppendF; 24 using android::base::StringPrintf; 25 26 namespace android { 27 namespace surfaceflinger { 28 29 // Time buckets for histogram, the calculated time deltas will be lower bounded 30 // to the buckets in this array. 31 static const std::array<int32_t, HISTOGRAM_SIZE> histogramConfig = 32 {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 33 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 34, 36, 38, 40, 42, 44, 46, 48, 50, 54, 58, 62, 66, 70, 74, 78, 82, 35 86, 90, 94, 98, 102, 106, 110, 114, 118, 122, 126, 130, 134, 138, 142, 146, 150, 36 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000}; 37 38 void TimeStatsHelper::Histogram::insert(int32_t delta) { 39 if (delta < 0) return; 40 // std::lower_bound won't work on out of range values 41 if (delta > histogramConfig[HISTOGRAM_SIZE - 1]) { 42 hist[histogramConfig[HISTOGRAM_SIZE - 1]]++; 43 return; 44 } 45 auto iter = std::lower_bound(histogramConfig.begin(), histogramConfig.end(), delta); 46 hist[*iter]++; 47 } 48 49 float TimeStatsHelper::Histogram::averageTime() const { 50 int64_t ret = 0; 51 int64_t count = 0; 52 for (auto& ele : hist) { 53 count += ele.second; 54 ret += ele.first * ele.second; 55 } 56 return static_cast<float>(ret) / count; 57 } 58 59 std::string TimeStatsHelper::Histogram::toString() const { 60 std::string result; 61 for (int32_t i = 0; i < HISTOGRAM_SIZE; ++i) { 62 int32_t bucket = histogramConfig[i]; 63 int32_t count = (hist.count(bucket) == 0) ? 0 : hist.at(bucket); 64 StringAppendF(&result, "%dms=%d ", bucket, count); 65 } 66 result.back() = '\n'; 67 return result; 68 } 69 70 std::string TimeStatsHelper::TimeStatsLayer::toString() const { 71 std::string result = ""; 72 StringAppendF(&result, "layerName = %s\n", layerName.c_str()); 73 StringAppendF(&result, "packageName = %s\n", packageName.c_str()); 74 StringAppendF(&result, "statsStart = %lld\n", static_cast<long long int>(statsStart)); 75 StringAppendF(&result, "statsEnd = %lld\n", static_cast<long long int>(statsEnd)); 76 StringAppendF(&result, "totalFrames= %d\n", totalFrames); 77 auto iter = deltas.find("present2present"); 78 if (iter != deltas.end()) { 79 StringAppendF(&result, "averageFPS = %.3f\n", 1000.0 / iter->second.averageTime()); 80 } 81 for (auto& ele : deltas) { 82 StringAppendF(&result, "%s histogram is as below:\n", ele.first.c_str()); 83 StringAppendF(&result, "%s", ele.second.toString().c_str()); 84 } 85 86 return result; 87 } 88 89 std::string TimeStatsHelper::TimeStatsGlobal::toString(std::optional<uint32_t> maxLayers) const { 90 std::string result = "SurfaceFlinger TimeStats:\n"; 91 StringAppendF(&result, "statsStart = %lld\n", static_cast<long long int>(statsStart)); 92 StringAppendF(&result, "statsEnd = %lld\n", static_cast<long long int>(statsEnd)); 93 StringAppendF(&result, "totalFrames= %d\n", totalFrames); 94 StringAppendF(&result, "missedFrames= %d\n", missedFrames); 95 StringAppendF(&result, "clientCompositionFrames= %d\n", clientCompositionFrames); 96 StringAppendF(&result, "TimeStats for each layer is as below:\n"); 97 const auto dumpStats = generateDumpStats(maxLayers); 98 for (auto& ele : dumpStats) { 99 StringAppendF(&result, "%s", ele->toString().c_str()); 100 } 101 102 return result; 103 } 104 105 SFTimeStatsLayerProto TimeStatsHelper::TimeStatsLayer::toProto() const { 106 SFTimeStatsLayerProto layerProto; 107 layerProto.set_layer_name(layerName); 108 layerProto.set_package_name(packageName); 109 layerProto.set_stats_start(statsStart); 110 layerProto.set_stats_end(statsEnd); 111 layerProto.set_total_frames(totalFrames); 112 for (auto& ele : deltas) { 113 SFTimeStatsDeltaProto* deltaProto = layerProto.add_deltas(); 114 deltaProto->set_delta_name(ele.first); 115 for (auto& histEle : ele.second.hist) { 116 SFTimeStatsHistogramBucketProto* histProto = deltaProto->add_histograms(); 117 histProto->set_render_millis(histEle.first); 118 histProto->set_frame_count(histEle.second); 119 } 120 } 121 return layerProto; 122 } 123 124 SFTimeStatsGlobalProto TimeStatsHelper::TimeStatsGlobal::toProto( 125 std::optional<uint32_t> maxLayers) const { 126 SFTimeStatsGlobalProto globalProto; 127 globalProto.set_stats_start(statsStart); 128 globalProto.set_stats_end(statsEnd); 129 globalProto.set_total_frames(totalFrames); 130 globalProto.set_missed_frames(missedFrames); 131 globalProto.set_client_composition_frames(clientCompositionFrames); 132 const auto dumpStats = generateDumpStats(maxLayers); 133 for (auto& ele : dumpStats) { 134 SFTimeStatsLayerProto* layerProto = globalProto.add_stats(); 135 layerProto->CopyFrom(ele->toProto()); 136 } 137 return globalProto; 138 } 139 140 std::vector<TimeStatsHelper::TimeStatsLayer const*> 141 TimeStatsHelper::TimeStatsGlobal::generateDumpStats(std::optional<uint32_t> maxLayers) const { 142 std::vector<TimeStatsLayer const*> dumpStats; 143 for (auto& ele : stats) { 144 dumpStats.push_back(&ele.second); 145 } 146 147 std::sort(dumpStats.begin(), dumpStats.end(), 148 [](TimeStatsHelper::TimeStatsLayer const* l, 149 TimeStatsHelper::TimeStatsLayer const* r) { 150 return l->totalFrames > r->totalFrames; 151 }); 152 153 if (maxLayers && (*maxLayers < dumpStats.size())) { 154 dumpStats.resize(*maxLayers); 155 } 156 return dumpStats; 157 } 158 159 } // namespace surfaceflinger 160 } // namespace android 161
