1 /* 2 * Copyright (c) 2022 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 #include "common_components/platform/cpu.h" 17 18 #include <unistd.h> 19 20 namespace common { NumberOfCpuCore()21uint32_t NumberOfCpuCore() 22 { 23 return static_cast<uint32_t>(sysconf(_SC_NPROCESSORS_ONLN)); 24 } 25 PhysicalSize()26size_t PhysicalSize() 27 { 28 auto pages = sysconf(_SC_PHYS_PAGES); 29 auto pageSize = sysconf(_SC_PAGE_SIZE); 30 return pages * pageSize; 31 } 32 } // namespace common 33