1 /*
2  * Copyright (c) 2023-2024 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 HIVIEW_FRAMEWORK_NATIVE_UNIFIED_COLLECTION_UTILS_CPU_UTIL_H
16 #define HIVIEW_FRAMEWORK_NATIVE_UNIFIED_COLLECTION_UTILS_CPU_UTIL_H
17 
18 #include <string>
19 #include <vector>
20 
21 #include "collect_result.h"
22 #include "cpu.h"
23 
24 namespace OHOS {
25 namespace HiviewDFX {
26 namespace UCollectUtil {
27 const std::string SYS_CPU_DIR_PREFIX = "/sys/devices/system/cpu/cpu";
28 
29 struct CpuTimeInfo {
30     std::string cpuId;
31     uint32_t userTime = 0;
32     uint32_t niceTime = 0;
33     uint32_t systemTime = 0;
34     uint32_t idleTime = 0;
35     uint32_t ioWaitTime = 0;
36     uint32_t irqTime = 0;
37     uint32_t softIrqTime = 0;
38 };
39 
40 struct CalculationTimeInfo {
41     // calculation time, using system clock.
42     uint64_t startTime = 0;
43     uint64_t endTime = 0;
44 
45     // calculation time, using boot time.
46     uint64_t startBootTime = 0;
47     uint64_t endBootTime = 0;
48 
49     // calculation period, using boot time.
50     uint64_t period = 0;
51 };
52 
53 class CpuUtil {
54 public:
55     static uint32_t GetNumOfCpuCores();
56     static UCollect::UcError GetSysCpuLoad(SysCpuLoad& sysCpuLoad);
57     static UCollect::UcError GetCpuTimeInfos(std::vector<CpuTimeInfo>& cpuInfos);
58     static UCollect::UcError GetCpuFrequency(std::vector<CpuFreq>& cpuFreqs);
59 };
60 } // namespace UCollectUtil
61 } // namespace HiviewDFX
62 } // namespace OHOS
63 #endif // HIVIEW_FRAMEWORK_NATIVE_UNIFIED_COLLECTION_UTILS_CPU_UTIL_H
64