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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 
     17 #ifndef SRC_TRACE_PROCESSOR_SLICE_TRACKER_H_
     18 #define SRC_TRACE_PROCESSOR_SLICE_TRACKER_H_
     19 
     20 #include <stdint.h>
     21 
     22 #include "src/trace_processor/trace_storage.h"
     23 
     24 namespace perfetto {
     25 namespace trace_processor {
     26 
     27 class TraceProcessorContext;
     28 
     29 class SliceTracker {
     30  public:
     31   explicit SliceTracker(TraceProcessorContext*);
     32   virtual ~SliceTracker();
     33 
     34   void BeginAndroid(int64_t timestamp,
     35                     uint32_t ftrace_tid,
     36                     uint32_t atrace_tgid,
     37                     StringId cat,
     38                     StringId name);
     39 
     40   // virtual for testing
     41   virtual void Begin(int64_t timestamp,
     42                      UniqueTid utid,
     43                      StringId cat,
     44                      StringId name);
     45 
     46   // virtual for testing
     47   virtual void Scoped(int64_t timestamp,
     48                       UniqueTid utid,
     49                       StringId cat,
     50                       StringId name,
     51                       int64_t duration);
     52 
     53   void EndAndroid(int64_t timestamp, uint32_t ftrace_tid, uint32_t atrace_tgid);
     54 
     55   // virtual for testing
     56   virtual void End(int64_t timestamp,
     57                    UniqueTid utid,
     58                    StringId opt_cat = {},
     59                    StringId opt_name = {});
     60 
     61  private:
     62   using SlicesStack = std::vector<size_t>;
     63 
     64   void StartSlice(int64_t timestamp,
     65                   int64_t duration,
     66                   UniqueTid utid,
     67                   StringId cat,
     68                   StringId name);
     69   void CompleteSlice(UniqueTid tid);
     70 
     71   void MaybeCloseStack(int64_t end_ts, SlicesStack*);
     72   int64_t GetStackHash(const SlicesStack&);
     73 
     74   TraceProcessorContext* const context_;
     75   std::unordered_map<UniqueTid, SlicesStack> threads_;
     76   std::unordered_map<uint32_t, uint32_t> ftrace_to_atrace_tgid_;
     77 };
     78 
     79 }  // namespace trace_processor
     80 }  // namespace perfetto
     81 
     82 #endif  // SRC_TRACE_PROCESSOR_SLICE_TRACKER_H_
     83