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 #include "timing.h"
16 
17 #include <chrono>
18 #include <map>
19 
20 static constexpr const double MICROSECONDS_TO_MILLISECONDS = 1000.0;
21 
22 namespace OHOS::NetStack::Timing {
RecieveTimer(const char * const type)23 Timer &TimerMap::RecieveTimer(const char *const type)
24 {
25     std::map<const char *const, Timer>::iterator it = timerMap_.find(type);
26     if (it != timerMap_.end()) {
27         return it->second;
28     } else {
29         Timer timer;
30         timer.timerName_ = type;
31         timerMap_.insert(std::pair<const char *const, Timer>(type, timer));
32         return timerMap_[type];
33     }
34 }
35 
Timer()36 Timer::Timer() {}
37 
Start()38 void Timer::Start()
39 {
40     Timer::Start(0L);
41 }
42 
Start(time_t time)43 void Timer::Start(time_t time)
44 {
45     if (time > 0) {
46         startTime_ = time;
47     } else {
48         startTime_ = TimeUtils::GetNowTimeMicroseconds();
49     }
50 }
51 
Stop()52 void Timer::Stop()
53 {
54     endTime_ = TimeUtils::GetNowTimeMicroseconds();
55 }
56 
Elapsed() const57 double Timer::Elapsed() const
58 {
59     double elapsedTime = TimeUtils::Microseconds2Milliseconds(endTime_ - startTime_);
60     return elapsedTime <= 0 ? 0 : elapsedTime;
61 }
62 
GetNowTimeMicroseconds()63 time_t TimeUtils::GetNowTimeMicroseconds()
64 {
65     auto now = std::chrono::system_clock::now();
66     return std::chrono::duration_cast<std::chrono::microseconds>(now.time_since_epoch()).count();
67 }
68 
Microseconds2Milliseconds(time_t microseconds)69 double TimeUtils::Microseconds2Milliseconds(time_t microseconds)
70 {
71     if (microseconds == 0) {
72         return 0.0;
73     }
74     return double(microseconds / MICROSECONDS_TO_MILLISECONDS);
75 }
76 } // namespace OHOS::NetStack::Timing