1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "cc/test/lap_timer.h" 6 7 #include "base/logging.h" 8 9 namespace cc { 10 11 LapTimer::LapTimer(int warmup_laps, 12 base::TimeDelta time_limit, 13 int check_interval) 14 : warmup_laps_(warmup_laps), 15 time_limit_(time_limit), 16 check_interval_(check_interval) { 17 DCHECK_GT(check_interval, 0); 18 Reset(); 19 } 20 21 void LapTimer::Reset() { 22 accumulator_ = base::TimeDelta(); 23 num_laps_ = 0; 24 accumulated_ = true; 25 remaining_warmups_ = warmup_laps_; 26 Start(); 27 } 28 29 void LapTimer::Start() { start_time_ = base::TimeTicks::HighResNow(); } 30 31 bool LapTimer::IsWarmedUp() { return remaining_warmups_ <= 0; } 32 33 void LapTimer::NextLap() { 34 if (!IsWarmedUp()) { 35 --remaining_warmups_; 36 if (IsWarmedUp()) { 37 Start(); 38 } 39 return; 40 } 41 ++num_laps_; 42 accumulated_ = (num_laps_ % check_interval_) == 0; 43 if (accumulated_) { 44 base::TimeTicks now = base::TimeTicks::HighResNow(); 45 accumulator_ += now - start_time_; 46 start_time_ = now; 47 } 48 } 49 50 bool LapTimer::HasTimeLimitExpired() { return accumulator_ >= time_limit_; } 51 52 float LapTimer::MsPerLap() { 53 DCHECK(accumulated_); 54 return accumulator_.InMillisecondsF() / num_laps_; 55 } 56 57 float LapTimer::LapsPerSecond() { 58 DCHECK(accumulated_); 59 return num_laps_ / accumulator_.InSecondsF(); 60 } 61 62 int LapTimer::NumLaps() { return num_laps_; } 63 64 } // namespace cc 65
