1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <sched.h> 20 21 #include <vector> 22 #include <map> 23 #include <string> 24 25 namespace swappy { 26 27 class CpuInfo { 28 public: 29 struct Cpu { 30 enum class Type { 31 Little, 32 Big 33 }; 34 35 int id; 36 int package_id; 37 long frequency; 38 39 Type type; 40 }; 41 42 CpuInfo(); 43 44 unsigned int getNumberOfCpus() const; 45 46 const std::vector<Cpu>& getCpus() const; 47 const std::string getHardware() const; 48 49 unsigned int getNumberOfLittleCores() const; 50 unsigned int getNumberOfBigCores() const; 51 52 cpu_set_t getLittleCoresMask() const; 53 cpu_set_t getBigCoresMask() const; 54 55 private: 56 std::vector<Cpu> mCpus; 57 std::string mHardware; 58 59 long mMaxFrequency; 60 long mMinFrequency; 61 62 unsigned int mNumberOfLittleCores = 0; 63 unsigned int mNumberOfBigCores = 0; 64 65 cpu_set_t mLittleCoresMask; 66 cpu_set_t mBigCoresMask; 67 }; 68 69 unsigned int to_mask(cpu_set_t cpu_set); 70 71 } // namespace swappy 72