| /* |
| * Copyright (C) 2016 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. |
| */ |
| |
| #ifndef SIMPLE_PERF_TRACING_H_ |
| #define SIMPLE_PERF_TRACING_H_ |
| |
| #include <vector> |
| |
| #include <android-base/logging.h> |
| |
| #include "event_type.h" |
| #include "utils.h" |
| |
| struct TracingField { |
| std::string name; |
| size_t offset; |
| size_t elem_size; |
| size_t elem_count; |
| bool is_signed; |
| }; |
| |
| struct TracingFieldPlace { |
| uint32_t offset; |
| uint32_t size; |
| |
| uint64_t ReadFromData(const char* raw_data) { |
| return ConvertBytesToValue(raw_data + offset, size); |
| } |
| }; |
| |
| struct StringTracingFieldPlace { |
| uint32_t offset; |
| uint32_t size; |
| |
| std::string ReadFromData(const char* raw_data) { |
| char s[size + 1]; |
| s[size] = '\0'; |
| memcpy(s, raw_data + offset, size); |
| return s; |
| } |
| }; |
| |
| struct TracingFormat { |
| std::string system_name; |
| std::string name; |
| uint64_t id; |
| std::vector<TracingField> fields; |
| |
| void GetField(const std::string& name, TracingFieldPlace& place) { |
| const TracingField& field = GetField(name); |
| place.offset = field.offset; |
| place.size = field.elem_size; |
| } |
| |
| void GetField(const std::string& name, StringTracingFieldPlace& place) { |
| const TracingField& field = GetField(name); |
| place.offset = field.offset; |
| place.size = field.elem_count; |
| } |
| |
| private: |
| const TracingField& GetField(const std::string& name) { |
| for (const auto& field : fields) { |
| if (field.name == name) { |
| return field; |
| } |
| } |
| LOG(FATAL) << "Couldn't find field " << name << "in TracingFormat of " |
| << this->name; |
| return fields[0]; |
| } |
| }; |
| |
| class TracingFile; |
| |
| class Tracing { |
| public: |
| explicit Tracing(const std::vector<char>& data); |
| ~Tracing(); |
| void Dump(size_t indent); |
| TracingFormat GetTracingFormatHavingId(uint64_t trace_event_id); |
| std::string GetTracingEventNameHavingId(uint64_t trace_event_id); |
| const std::string& GetKallsyms() const; |
| uint32_t GetPageSize() const; |
| |
| private: |
| TracingFile* tracing_file_; |
| std::vector<TracingFormat> tracing_formats_; |
| }; |
| |
| bool GetTracingData(const std::vector<const EventType*>& event_types, |
| std::vector<char>* data); |
| |
| #endif // SIMPLE_PERF_TRACING_H_ |