1 /* 2 * Copyright (C) 2021 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 #ifndef CPU_H 16 #define CPU_H 17 #include <iostream> 18 #include <vector> 19 #include "sp_profiler.h" 20 namespace OHOS { 21 namespace SmartPerf { 22 class CPU : public SpProfiler { 23 public: GetInstance()24 static CPU &GetInstance() 25 { 26 static CPU instance; 27 return instance; 28 } 29 std::map<std::string, std::string> ItemData() override; 30 31 int GetCpuNum(); 32 int GetCpuFreq(int cpuId) const; 33 std::vector<float> GetCpuLoad(); 34 35 private: CPU()36 CPU() {}; 37 CPU(const CPU &); 38 CPU &operator = (const CPU &); 39 40 const std::string cpuBasePath = "/sys/devices/system/cpu"; 41 const std::string procStat = "/proc/stat"; CpuScalingCurFreq(int cpuId)42 inline const std::string CpuScalingCurFreq(int cpuId) const 43 { 44 return cpuBasePath + "/cpu" + std::to_string(cpuId) + "/cpufreq/scaling_cur_freq"; 45 } 46 47 int mCpuNum = -1; 48 float CacWorkload(const char *buffer, const char *preBuffer) const; 49 }; 50 } 51 } 52 #endif