1 /*
2 * Copyright (c) 2023 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 #ifndef OHOS_ABILITY_RUNTIME_TIME_UTIL_H
17 #define OHOS_ABILITY_RUNTIME_TIME_UTIL_H
18
19 #include <cinttypes>
20 #include <sys/stat.h>
21 #include <time.h>
22
23 namespace OHOS::AbilityRuntime {
24 namespace TimeUtil {
25 // NANOSECONDS mean 10^9 nano second
26 constexpr int64_t NANOSECONDS = 1000000000;
27 // MICROSECONDS mean 10^6 milli second
28 constexpr int64_t MICROSECONDS = 1000000;
29 constexpr int64_t SEC_TO_MILLISEC = 1000;
30 constexpr int64_t MAX_TIME_BUFF = 64; // 64 : for example 2021-05-27-01-01-01
31 constexpr int32_t DECIMAL_BASE = 10;
32
SystemTimeMillisecond()33 [[maybe_unused]] static int64_t SystemTimeMillisecond()
34 {
35 struct timespec t;
36 t.tv_sec = 0;
37 t.tv_nsec = 0;
38 clock_gettime(CLOCK_MONOTONIC, &t);
39 return (int64_t)((t.tv_sec) * NANOSECONDS + t.tv_nsec) / MICROSECONDS;
40 }
41
FormatTime(const std::string & format)42 [[maybe_unused]] static std::string FormatTime(const std::string &format)
43 {
44 auto now = std::chrono::system_clock::now();
45 auto millisecs = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch());
46 auto timestamp = millisecs.count();
47 std::time_t tt = static_cast<std::time_t>(timestamp / SEC_TO_MILLISEC);
48 std::tm t = *std::localtime(&tt);
49 char buffer[MAX_TIME_BUFF] = {0};
50 std::strftime(buffer, sizeof(buffer), format.c_str(), &t);
51 return std::string(buffer);
52 }
53
DefaultCurrentTimeStr()54 [[maybe_unused]] static std::string DefaultCurrentTimeStr()
55 {
56 auto now = std::chrono::system_clock::now();
57 auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch());
58 auto timestamp = millis.count();
59 std::time_t tt = static_cast<std::time_t>(timestamp / SEC_TO_MILLISEC);
60 std::tm t{};
61 localtime_noenv_r(&tt, &t);
62 char buffer[MAX_TIME_BUFF] = {0};
63 std::strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", &t);
64 auto remainder = timestamp % SEC_TO_MILLISEC;
65 std::string milliStr("000");
66 for (int i = 2; i >= 0 && remainder > 0; i--) {
67 milliStr[i] = '0' + remainder % DECIMAL_BASE;
68 remainder /= DECIMAL_BASE;
69 }
70 return std::string(buffer) + "." + milliStr;
71 }
72 } // namespace TimeUtil
73 } // namespace OHOS::AbilityRuntime
74 #endif // OHOS_ABILITY_RUNTIME_TIME_UTIL_H