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 ECMASCRIPT_MEM_CLOCK_SCOPE_H 17 #define ECMASCRIPT_MEM_CLOCK_SCOPE_H 18 19 #include <ctime> 20 #include <chrono> 21 22 #include "libpandabase/macros.h" 23 24 namespace panda::ecmascript { 25 class ClockScope { 26 using Clock = std::chrono::high_resolution_clock; 27 using Duration = std::chrono::duration<uint64_t, std::nano>; 28 29 public: ClockScope()30 ClockScope() 31 { 32 start_ = Clock::now(); 33 } 34 Reset()35 void Reset() 36 { 37 start_ = Clock::now(); 38 } 39 GetPauseTime()40 Duration GetPauseTime() const 41 { 42 return Clock::now() - start_; 43 } 44 TotalSpentTime()45 float TotalSpentTime() const 46 { 47 auto duration = std::chrono::duration_cast<std::chrono::microseconds>(Clock::now() - start_); 48 return (float) duration.count() / MILLION_TIME; 49 } 50 TotalSpentTimeInMicroseconds()51 int TotalSpentTimeInMicroseconds() const 52 { 53 return std::chrono::duration_cast<std::chrono::microseconds>(Clock::now() - start_).count(); 54 } 55 GetCurTime()56 double GetCurTime() const 57 { 58 auto curTime_ = Duration(start_.time_since_epoch()); 59 return (double) curTime_.count() / MILLION_TIME; 60 } 61 62 private: 63 NO_COPY_SEMANTIC(ClockScope); 64 NO_MOVE_SEMANTIC(ClockScope); 65 66 Clock::time_point start_; 67 static constexpr uint32_t MILLION_TIME = 1000; 68 }; 69 } // namespace panda::ecmascript 70 #endif // ECMASCRIPT_MEM_CLOCK_SCOPE_H 71