1 /* 2 * Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved. 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 #ifndef STACK_DATA_REPEATER_H 16 #define STACK_DATA_REPEATER_H 17 18 #include <condition_variable> 19 #include <deque> 20 #include <memory> 21 #include <mutex> 22 #include "logging.h" 23 #include "nocopyable.h" 24 #include "native_hook_result.pb.h" 25 #include "hook_common.h" 26 #include "utilities.h" 27 #include "hook_record.h" 28 29 namespace OHOS::Developtools::NativeDaemon { 30 31 using BatchNativeHookDataPtr = STD_PTR(shared, BatchNativeHookData); 32 constexpr const int32_t CACHE_ARRAY_SIZE = 10; 33 34 class StackDataRepeater { 35 public: 36 explicit StackDataRepeater(size_t maxSize); 37 ~StackDataRepeater(); 38 bool PutRawStack(const std::shared_ptr<HookRecord>& rawData, bool isRecordAccurately); 39 bool PutRawStackArray(std::array<std::shared_ptr<HookRecord>, CACHE_ARRAY_SIZE>& rawDataArray, uint32_t batchCount); 40 std::shared_ptr<HookRecord> TakeRawData(uint32_t during, clockid_t clockId, uint32_t batchCount, 41 std::shared_ptr<HookRecord> batchRawStack[], uint32_t statInterval, bool& isTimeOut); 42 void Close(); 43 void Reset(); 44 size_t Size(); ClearCache()45 void ClearCache() 46 { 47 std::unique_lock<std::mutex> lock(cacheMutex_); 48 rawDataCacheQueue_.clear(); 49 } 50 51 private: 52 std::mutex mutex_; 53 std::mutex cacheMutex_; 54 std::deque<std::shared_ptr<HookRecord>> rawDataCacheQueue_; 55 std::condition_variable slotCondVar_; 56 std::condition_variable itemCondVar_; 57 std::deque<std::shared_ptr<HookRecord>> rawDataQueue_; 58 std::unordered_map<uint64_t, std::shared_ptr<HookRecord>> mallocMap_ = {}; 59 size_t maxSize_; 60 uint64_t reducedStackCount_; 61 std::atomic_bool closed_; 62 63 DISALLOW_COPY_AND_MOVE(StackDataRepeater); 64 }; 65 66 using StackDataRepeaterPtr = STD_PTR(shared, StackDataRepeater); 67 } 68 #endif // STACK_DATA_REPEATER_H