89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SIMPLE_PERF_TRACING_H_
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#define SIMPLE_PERF_TRACING_H_
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#include <vector>
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#include <android-base/logging.h>
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#include "event_type.h"
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#include "utils.h"
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struct TracingField {
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std::string name;
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size_t offset;
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size_t elem_size;
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size_t elem_count;
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bool is_signed;
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};
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struct TracingFieldPlace {
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uint32_t offset;
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uint32_t size;
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uint64_t ReadFromData(const char* raw_data) {
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return ConvertBytesToValue(raw_data + offset, size);
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}
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};
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struct TracingFormat {
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std::string system_name;
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std::string name;
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uint64_t id;
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std::vector<TracingField> fields;
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void GetField(const std::string& name, TracingFieldPlace& place) {
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const TracingField& field = GetField(name);
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place.offset = field.offset;
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place.size = field.elem_size;
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}
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private:
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const TracingField& GetField(const std::string& name) {
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for (const auto& field : fields) {
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if (field.name == name) {
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return field;
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}
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}
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LOG(FATAL) << "Couldn't find field " << name << "in TracingFormat of "
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<< this->name;
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return fields[0];
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}
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};
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class TracingFile;
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class Tracing {
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public:
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explicit Tracing(const std::vector<char>& data);
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~Tracing();
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void Dump(size_t indent);
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TracingFormat GetTracingFormatHavingId(uint64_t trace_event_id);
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std::string GetTracingEventNameHavingId(uint64_t trace_event_id);
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const std::string& GetKallsyms() const;
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uint32_t GetPageSize() const;
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private:
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TracingFile* tracing_file_;
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std::vector<TracingFormat> tracing_formats_;
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};
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bool GetTracingData(const std::vector<const EventType*>& event_types,
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std::vector<char>* data);
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#endif // SIMPLE_PERF_TRACING_H_
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