1 /*
2 * Copyright (c) 2022-2024 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 #include "time_util.h"
16
17 #include <chrono>
18 #include <ctime>
19 #include <sys/time.h>
20
21 namespace OHOS {
22 namespace HiviewDFX {
23 namespace TimeUtil {
24 namespace {
25 const std::string DEFAULT_DATE = "19700101";
26 }
GetMilliseconds()27 uint64_t GetMilliseconds()
28 {
29 auto now = std::chrono::system_clock::now();
30 auto millisecs = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch());
31 return millisecs.count();
32 }
33
GetDate()34 std::string GetDate()
35 {
36 time_t nowTime = time(nullptr);
37 if (nowTime < 0) {
38 return DEFAULT_DATE;
39 }
40 char dateChs[9] = { 0 }; // 9 means 8(19700101) + 1('\0')
41 struct tm localTm;
42 if (localtime_noenv_r(&nowTime, &localTm) == nullptr) {
43 return DEFAULT_DATE;
44 }
45 if (strftime(dateChs, sizeof(dateChs), "%Y%m%d", &localTm) == 0) {
46 return DEFAULT_DATE;
47 }
48 return dateChs;
49 }
50
GetTimeZone()51 std::string GetTimeZone()
52 {
53 struct timeval tv;
54 if (gettimeofday(&tv, nullptr) != 0) {
55 return "";
56 }
57 time_t sysSec = tv.tv_sec;
58 struct tm tmLocal;
59 if (localtime_noenv_r(&sysSec, &tmLocal) == nullptr) {
60 return "";
61 }
62 constexpr size_t buffSize = 6; // for '+0800\0'
63 char buff[buffSize] = {0};
64 if (strftime(buff, sizeof(buff) - 1, "%z", &tmLocal) == 0) {
65 return "";
66 }
67 return std::string(buff);
68 }
69
GetMilliSecondsTimestamp(clockid_t clockId)70 int64_t GetMilliSecondsTimestamp(clockid_t clockId)
71 {
72 struct timespec times {};
73 if (clock_gettime(clockId, ×) == -1) {
74 return -1;
75 }
76 constexpr int64_t secondToMillisecond = 1 * 1000;
77 constexpr int64_t nanosecondToMillisecond = 1 * 1000 * 1000;
78 return times.tv_sec * secondToMillisecond + times.tv_nsec / nanosecondToMillisecond;
79 }
80
GetElapsedMilliSecondsSinceBoot()81 int64_t GetElapsedMilliSecondsSinceBoot()
82 {
83 return GetMilliSecondsTimestamp(CLOCK_BOOTTIME);
84 }
85 } // namespace TimeUtil
86 } // namespace HiviewDFX
87 } // namespace OHOS
88