1 // Copyright (C) 2019 Google LLC 2 // 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 "icing/legacy/core/icing-timer.h" 16 17 namespace icing { 18 namespace lib { 19 WallTimeNow()20double IcingTimer::WallTimeNow() { 21 struct timeval tv; 22 gettimeofday(&tv, nullptr); 23 return tv.tv_sec + tv.tv_usec / 1e6; 24 } 25 ClockTime()26double IcingTimer::ClockTime() { 27 #ifdef __APPLE__ 28 // iOS targets can't rely on clock_gettime(). So, fallback to WallTime_Now(). 29 return WallTimeNow(); 30 #else 31 struct timespec ts; 32 clock_gettime(CLOCK_MONOTONIC, &ts); 33 return ts.tv_sec + ts.tv_nsec / 1e9; 34 #endif // __APPLE__ 35 } 36 IcingTimer()37IcingTimer::IcingTimer() { Reset(); } 38 Reset()39void IcingTimer::Reset() { start_ = ClockTime(); } 40 Elapsed() const41double IcingTimer::Elapsed() const { return ClockTime() - start_; } 42 } // namespace lib 43 } // namespace icing 44