1 /** 2 * Copyright (c) 2021-2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef PANDA_RUNTIME_TOOLING_SAMPLER_SAMPLE_READER_H 17 #define PANDA_RUNTIME_TOOLING_SAMPLER_SAMPLE_READER_H 18 19 #include "libpandabase/macros.h" 20 21 #include "runtime/tooling/sampler/sample_info.h" 22 23 namespace ark::tooling::sampler { 24 25 // Reader of .aspt format 26 class SampleReader final { 27 public: 28 // clang-format off 29 static constexpr size_t SAMPLE_THREAD_ID_OFFSET = 0 * sizeof(uint32_t); 30 static constexpr size_t SAMPLE_THREAD_STATUS_OFFSET = 1 * sizeof(uint32_t); 31 static constexpr size_t SAMPLE_STACK_SIZE_OFFSET = 2 * sizeof(uint32_t); 32 static constexpr size_t SAMPLE_STACK_OFFSET = 2 * sizeof(uint32_t) + 1 * sizeof(uintptr_t); 33 34 static constexpr size_t PANDA_FILE_POINTER_OFFSET = 1 * sizeof(uintptr_t); 35 static constexpr size_t PANDA_FILE_CHECKSUM_OFFSET = 2 * sizeof(uintptr_t); 36 static constexpr size_t PANDA_FILE_NAME_SIZE_OFFSET = 2 * sizeof(uintptr_t) + 1 * sizeof(uint32_t); 37 static constexpr size_t PANDA_FILE_NAME_OFFSET = 3 * sizeof(uintptr_t) + 1 * sizeof(uint32_t); 38 // clang-format on 39 inline explicit SampleReader(const char *filename); 40 ~SampleReader() = default; 41 42 inline bool GetNextSample(SampleInfo *sampleOut); 43 inline bool GetNextModule(FileInfo *moduleOut); 44 45 NO_COPY_SEMANTIC(SampleReader); 46 NO_MOVE_SEMANTIC(SampleReader); 47 48 private: 49 // Using std::vector instead of PandaVector 'cause it should be used in tool without runtime 50 std::vector<char> buffer_; 51 std::vector<char *> sampleRowPtrs_; 52 std::vector<char *> moduleRowPtrs_; 53 size_t sampleRowCounter_ {0}; 54 size_t moduleRowCounter_ {0}; 55 }; 56 57 } // namespace ark::tooling::sampler 58 59 #endif // PANDA_RUNTIME_TOOLING_SAMPLER_SAMPLE_READER_H 60