1 /*
2 * Copyright (c) 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 #include "common_components/platform/cpu.h"
17
18 #include <sys/sysctl.h>
19 #include <sys/types.h>
20 #include <sys/xattr.h>
21 #include <unistd.h>
22
23 #include "common_components/log/log.h"
24
25 namespace common {
NumberOfCpuCore()26 uint32_t NumberOfCpuCore()
27 {
28 return static_cast<uint32_t>(sysconf(_SC_NPROCESSORS_ONLN));
29 }
30
PhysicalSize()31 size_t PhysicalSize()
32 {
33 static constexpr int mibLength = 2;
34 int mib[2];
35 mib[0] = CTL_HW;
36 mib[1] = HW_MEMSIZE;
37 int64_t size = 0;
38 size_t bufferLength = sizeof(size);
39 if (sysctl(mib, mibLength, &size, &bufferLength, nullptr, 0) != 0) {
40 LOG_COMMON(FATAL) << "sysctl error";
41 }
42 return static_cast<size_t>(size);
43 }
44 } // namespace common
45