1 /*
2  * Copyright (c) 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 
16 #ifndef ELAPSED_REAL_TIME_CHECK_H
17 #define ELAPSED_REAL_TIME_CHECK_H
18 #ifdef FEATURE_GNSS_SUPPORT
19 #ifdef TIME_SERVICE_ENABLE
20 
21 #include <cstdint>
22 
23 namespace OHOS {
24 namespace Location {
25 class ElapsedRealTimeCheck {
26 public:
27     static ElapsedRealTimeCheck* GetInstance();
28     void CheckRealTime(int64_t time);
29     bool CanTrustElapsedRealTime();
30 
31 private:
32     ElapsedRealTimeCheck();
33     ~ElapsedRealTimeCheck();
34 
35     int64_t timeBegin_ = 0;
36     int64_t timeBeginElapsed_ = 0;
37     int64_t timeCheck_ = 0;
38     int64_t timeCheckElapsed_ = 0;
39     bool canTrustElapsedRealTime_ = true; // default is true, usually we trust this time.
40 };
41 } // namespace Location
42 } // namespace OHOS
43 
44 #endif // TIME_SERVICE_ENABLE
45 #endif // FEATURE_GNSS_SUPPORT
46 #endif // ELAPSED_REAL_TIME_CHECK_H
47