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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/scheduler/delay_based_time_source.h" | 5 #include "cc/scheduler/delay_based_time_source.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <cmath> | 8 #include <cmath> |
9 #include <string> | 9 #include <string> |
10 | 10 |
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29 // interval that will trigger an immediate phase change. If the changes are | 29 // interval that will trigger an immediate phase change. If the changes are |
30 // within the thresholds, the change will take place on the next tick. If | 30 // within the thresholds, the change will take place on the next tick. If |
31 // either change is outside the thresholds, the next tick will be canceled and | 31 // either change is outside the thresholds, the next tick will be canceled and |
32 // reissued immediately. | 32 // reissued immediately. |
33 static const double kIntervalChangeThreshold = 0.25; | 33 static const double kIntervalChangeThreshold = 0.25; |
34 static const double kPhaseChangeThreshold = 0.25; | 34 static const double kPhaseChangeThreshold = 0.25; |
35 | 35 |
36 } // namespace | 36 } // namespace |
37 | 37 |
38 // The following methods correspond to the DelayBasedTimeSource that uses | 38 // The following methods correspond to the DelayBasedTimeSource that uses |
39 // the base::TimeTicks::HighResNow as the timebase. | 39 // the base::TimeTicks::Now as the timebase. |
40 scoped_refptr<DelayBasedTimeSourceHighRes> DelayBasedTimeSourceHighRes::Create( | 40 scoped_refptr<DelayBasedTimeSourceHighRes> DelayBasedTimeSourceHighRes::Create( |
41 base::TimeDelta interval, | 41 base::TimeDelta interval, |
42 base::SingleThreadTaskRunner* task_runner) { | 42 base::SingleThreadTaskRunner* task_runner) { |
43 return make_scoped_refptr( | 43 return make_scoped_refptr( |
44 new DelayBasedTimeSourceHighRes(interval, task_runner)); | 44 new DelayBasedTimeSourceHighRes(interval, task_runner)); |
45 } | 45 } |
46 | 46 |
47 DelayBasedTimeSourceHighRes::DelayBasedTimeSourceHighRes( | 47 DelayBasedTimeSourceHighRes::DelayBasedTimeSourceHighRes( |
48 base::TimeDelta interval, | 48 base::TimeDelta interval, |
49 base::SingleThreadTaskRunner* task_runner) | 49 base::SingleThreadTaskRunner* task_runner) |
50 : DelayBasedTimeSource(interval, task_runner) { | 50 : DelayBasedTimeSource(interval, task_runner) { |
51 } | 51 } |
52 | 52 |
53 DelayBasedTimeSourceHighRes::~DelayBasedTimeSourceHighRes() {} | 53 DelayBasedTimeSourceHighRes::~DelayBasedTimeSourceHighRes() {} |
54 | 54 |
55 base::TimeTicks DelayBasedTimeSourceHighRes::Now() const { | 55 base::TimeTicks DelayBasedTimeSourceHighRes::Now() const { |
56 return base::TimeTicks::HighResNow(); | 56 return base::TimeTicks::Now(); |
57 } | 57 } |
58 | 58 |
59 // The following methods correspond to the DelayBasedTimeSource that uses | 59 // The following methods correspond to the DelayBasedTimeSource that uses |
60 // the base::TimeTicks::Now as the timebase. | 60 // the base::TimeTicks::Now as the timebase. |
61 scoped_refptr<DelayBasedTimeSource> DelayBasedTimeSource::Create( | 61 scoped_refptr<DelayBasedTimeSource> DelayBasedTimeSource::Create( |
62 base::TimeDelta interval, | 62 base::TimeDelta interval, |
63 base::SingleThreadTaskRunner* task_runner) { | 63 base::SingleThreadTaskRunner* task_runner) { |
64 return make_scoped_refptr(new DelayBasedTimeSource(interval, task_runner)); | 64 return make_scoped_refptr(new DelayBasedTimeSource(interval, task_runner)); |
65 } | 65 } |
66 | 66 |
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305 state->BeginDictionary("next_parameters"); | 305 state->BeginDictionary("next_parameters"); |
306 state->SetDouble("interval_us", next_parameters_.interval.InMicroseconds()); | 306 state->SetDouble("interval_us", next_parameters_.interval.InMicroseconds()); |
307 state->SetDouble("tick_target_us", | 307 state->SetDouble("tick_target_us", |
308 next_parameters_.tick_target.ToInternalValue()); | 308 next_parameters_.tick_target.ToInternalValue()); |
309 state->EndDictionary(); | 309 state->EndDictionary(); |
310 | 310 |
311 state->SetBoolean("active", active_); | 311 state->SetBoolean("active", active_); |
312 } | 312 } |
313 | 313 |
314 } // namespace cc | 314 } // namespace cc |
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