1 /* 2 * Copyright (c) 2023-2025 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 HIVIEW_FRAMEWORK_NATIVE_UNIFIED_COLLECTION_CALCULATOR_CPU_CALCULATOR_H 17 #define HIVIEW_FRAMEWORK_NATIVE_UNIFIED_COLLECTION_CALCULATOR_CPU_CALCULATOR_H 18 19 #include <vector> 20 #include <unordered_map> 21 22 #include "cpu.h" 23 #include "cpu_util.h" 24 25 namespace OHOS { 26 namespace HiviewDFX { 27 namespace UCollectUtil { 28 class CpuCalculator { 29 public: 30 CpuCalculator(); 31 ~CpuCalculator() = default; 32 double CalculateCpuLoad(uint64_t currCpuLoad, uint64_t lastCpuLoad, uint64_t statPeriod); 33 double CalculateCpuUsage(uint64_t currCpuUsage, uint64_t lastCpuUsage, uint64_t statPeriod); 34 CpuUsageInfo CalculateSysCpuUsageInfo(const CpuTimeInfo& currCpuTimeInfo, const CpuTimeInfo& lastCpuTimeInfo); 35 36 private: 37 void InitNumOfCpuCores(); 38 void InitCpuDmipses(); 39 void InitMaxCpuLoadUnit(); 40 bool IsSMTEnabled(); 41 uint64_t GetMaxStCpuLoad(); 42 uint64_t GetMaxStCpuLoadWithSMT(); 43 44 private: 45 uint32_t numOfCpuCores_ = 0; 46 uint64_t maxCpuLoadUnit_ = 0; 47 std::vector<uint32_t> cpuDmipses_; 48 }; 49 } // namespace UCollectUtil 50 } // namespace HiviewDFX 51 } // namespace OHOS 52 #endif // HIVIEW_FRAMEWORK_NATIVE_UNIFIED_COLLECTION_CALCULATOR_CPU_CALCULATOR_H 53