1 /*
2  * Copyright (C) 2019 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_IMPORTERS_FUCHSIA_FUCHSIA_TRACE_TOKENIZER_H_
18 #define SRC_TRACE_PROCESSOR_IMPORTERS_FUCHSIA_FUCHSIA_TRACE_TOKENIZER_H_
19 
20 #include "src/trace_processor/chunked_trace_reader.h"
21 #include "src/trace_processor/importers/fuchsia/fuchsia_trace_utils.h"
22 #include "src/trace_processor/storage/trace_storage.h"
23 #include "src/trace_processor/trace_blob_view.h"
24 
25 namespace perfetto {
26 namespace trace_processor {
27 
28 class TraceProcessorContext;
29 
30 // The Fuchsia trace format is documented at
31 // https://fuchsia.googlesource.com/fuchsia/+/HEAD/docs/development/tracing/trace-format/README.md
32 class FuchsiaTraceTokenizer : public ChunkedTraceReader {
33  public:
34   explicit FuchsiaTraceTokenizer(TraceProcessorContext*);
35   ~FuchsiaTraceTokenizer() override;
36 
37   // ChunkedTraceReader implementation
38   util::Status Parse(std::unique_ptr<uint8_t[]>, size_t) override;
39   void NotifyEndOfFile() override;
40 
41  private:
42   struct ProviderInfo {
43     std::string name;
44 
45     std::unordered_map<uint64_t, StringId> string_table;
46     std::unordered_map<uint64_t, fuchsia_trace_utils::ThreadInfo> thread_table;
47 
48     uint64_t ticks_per_second = 1000000000;
49   };
50 
51   struct RunningThread {
52     fuchsia_trace_utils::ThreadInfo info;
53     int64_t start_ts;
54   };
55 
56   void ParseRecord(TraceBlobView);
57   void RegisterProvider(uint32_t, std::string);
58 
59   TraceProcessorContext* const context_;
60   std::vector<uint8_t> leftover_bytes_;
61 
62   // Map from tid to pid. Used because in some places we do not get pid info.
63   // Fuchsia tids are never reused.
64   std::unordered_map<uint64_t, uint64_t> pid_table_;
65   std::unordered_map<uint32_t, std::unique_ptr<ProviderInfo>> providers_;
66   ProviderInfo* current_provider_;
67 
68   std::unordered_map<uint32_t, RunningThread> cpu_threads_;
69 };
70 
71 }  // namespace trace_processor
72 }  // namespace perfetto
73 
74 #endif  // SRC_TRACE_PROCESSOR_IMPORTERS_FUCHSIA_FUCHSIA_TRACE_TOKENIZER_H_
75