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      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 #pragma once
     17 
     18 #include <timestatsproto/TimeStatsProtoHeader.h>
     19 
     20 #include <optional>
     21 #include <string>
     22 #include <unordered_map>
     23 #include <vector>
     24 
     25 namespace android {
     26 namespace surfaceflinger {
     27 
     28 class TimeStatsHelper {
     29 public:
     30     class Histogram {
     31     public:
     32         // Key is the delta time between timestamps
     33         // Value is the number of appearances of that delta
     34         std::unordered_map<int32_t, int32_t> hist;
     35 
     36         void insert(int32_t delta);
     37         float averageTime() const;
     38         std::string toString() const;
     39     };
     40 
     41     class TimeStatsLayer {
     42     public:
     43         std::string layerName;
     44         std::string packageName;
     45         int64_t statsStart = 0;
     46         int64_t statsEnd = 0;
     47         int32_t totalFrames = 0;
     48         std::unordered_map<std::string, Histogram> deltas;
     49 
     50         std::string toString() const;
     51         SFTimeStatsLayerProto toProto() const;
     52     };
     53 
     54     class TimeStatsGlobal {
     55     public:
     56         int64_t statsStart = 0;
     57         int64_t statsEnd = 0;
     58         int32_t totalFrames = 0;
     59         int32_t missedFrames = 0;
     60         int32_t clientCompositionFrames = 0;
     61         std::unordered_map<std::string, TimeStatsLayer> stats;
     62 
     63         std::string toString(std::optional<uint32_t> maxLayers) const;
     64         SFTimeStatsGlobalProto toProto(std::optional<uint32_t> maxLayers) const;
     65 
     66     private:
     67         std::vector<TimeStatsLayer const*> generateDumpStats(
     68                 std::optional<uint32_t> maxLayers) const;
     69     };
     70 };
     71 
     72 } // namespace surfaceflinger
     73 } // namespace android
     74