1 /* 2 * Copyright (c) 2021 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 TIME_UTILS_H 17 #define TIME_UTILS_H 18 19 #include <ctime> 20 #include <sys/time.h> 21 22 namespace OHOS { 23 namespace DistributedKv { 24 constexpr int64_t SEC_TO_MICROSEC = 1000000; 25 26 class TimeUtils final { 27 public: 28 // micro seconds since 1970 CurrentTimeMicros()29 static inline uint64_t CurrentTimeMicros() 30 { 31 struct timeval tv = { 0, 0 }; 32 gettimeofday(&tv, nullptr); 33 return (tv.tv_sec * SEC_TO_MICROSEC + tv.tv_usec); 34 } 35 }; 36 } // namespace DistributedKv 37 } // namespace OHOS 38 #endif 39