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 "utils_datetime.h"
17
18 #include <time.h>
19
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23
24 #define SEC_TO_NANOSEC 1000000000
25 #define SEC_TO_MICROSEC 1000000
26 #define SEC_TO_MILLISEC 1000
27 #define MILLISEC_TO_NANOSEC 1000000
28 #define MILLISEC_TO_USEC 1000
29 #define MICROSEC_TO_NANOSEC 1000
30 #define GET_TIME_RETRY_TIMES 5
31
GetMillisecondSinceBoot(void)32 uint64_t GetMillisecondSinceBoot(void)
33 {
34 struct timespec ts;
35 uint64_t result = 0;
36 uint32_t retryTimes = 0;
37 while (retryTimes < GET_TIME_RETRY_TIMES) {
38 clock_gettime(CLOCK_BOOTTIME, &ts);
39 result = (uint64_t)(ts.tv_sec * SEC_TO_MILLISEC + ts.tv_nsec / MILLISEC_TO_NANOSEC);
40 if (result != 0) {
41 break;
42 }
43 retryTimes++;
44 }
45 return result;
46 }
47
GetMillisecondSince1970(void)48 uint64_t GetMillisecondSince1970(void)
49 {
50 struct timespec ts;
51 clock_gettime(CLOCK_REALTIME, &ts);
52 return ts.tv_sec * SEC_TO_MILLISEC + ts.tv_nsec / MILLISEC_TO_NANOSEC;
53 }
54
GetDateTimeByMillisecondSince1970(uint64_t input,DateTime * datetime)55 bool GetDateTimeByMillisecondSince1970(uint64_t input, DateTime *datetime)
56 {
57 if (datetime == NULL) {
58 return false;
59 }
60 struct tm tm;
61 time_t time = (time_t)(input / SEC_TO_MILLISEC);
62 localtime_r(&time, &tm);
63
64 datetime->year = (uint16_t)(tm.tm_year + 1900); // need add 1900
65 datetime->mon = (uint16_t)(tm.tm_mon + 1);
66 datetime->day = (uint16_t)tm.tm_mday;
67 datetime->hour = (uint16_t)tm.tm_hour;
68 datetime->min = (uint16_t)tm.tm_min;
69 datetime->sec = (uint16_t)tm.tm_sec;
70 datetime->msec = (uint16_t)(input % SEC_TO_MILLISEC);
71 return true;
72 }
73
GetDateTimeByMillisecondSinceBoot(uint64_t input,DateTime * datetime)74 bool GetDateTimeByMillisecondSinceBoot(uint64_t input, DateTime *datetime)
75 {
76 if (datetime == NULL) {
77 return false;
78 }
79 static uint64_t compensate = 0;
80 if (compensate == 0) {
81 compensate = GetMillisecondSince1970() - GetMillisecondSinceBoot();
82 }
83
84 return GetDateTimeByMillisecondSince1970(input + compensate, datetime);
85 }
86 #ifdef __cplusplus
87 }
88 #endif