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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 "platform/scheduler/renderer/throttled_time_domain.h" | 5 #include "platform/scheduler/renderer/throttled_time_domain.h" |
6 | 6 |
7 namespace blink { | 7 namespace blink { |
8 namespace scheduler { | 8 namespace scheduler { |
9 | 9 |
10 ThrottledTimeDomain::ThrottledTimeDomain(const char* tracing_category) | 10 ThrottledTimeDomain::ThrottledTimeDomain(const char* tracing_category) |
11 : RealTimeDomain(tracing_category) {} | 11 : RealTimeDomain(tracing_category) {} |
12 | 12 |
13 ThrottledTimeDomain::~ThrottledTimeDomain() {} | 13 ThrottledTimeDomain::~ThrottledTimeDomain() {} |
14 | 14 |
15 const char* ThrottledTimeDomain::GetName() const { | 15 const char* ThrottledTimeDomain::GetName() const { |
16 return "ThrottledTimeDomain"; | 16 return "ThrottledTimeDomain"; |
17 } | 17 } |
18 | 18 |
19 void ThrottledTimeDomain::RequestWakeUpAt(base::TimeTicks now, | 19 void ThrottledTimeDomain::RequestWakeUpAt(base::TimeTicks now, |
20 base::TimeTicks run_time) { | 20 base::TimeTicks run_time) { |
21 // We assume the owner (i.e. TaskQueueThrottler) will manage wake-ups on our | 21 // We assume the owner (i.e. TaskQueueThrottler) will manage wake-ups on our |
22 // behalf. | 22 // behalf. |
23 } | 23 } |
24 | 24 |
25 void ThrottledTimeDomain::CancelWakeUpAt(base::TimeTicks run_time) { | 25 void ThrottledTimeDomain::CancelWakeUpAt(base::TimeTicks run_time) { |
26 // We ignore this because RequestWakeUpAt is a NOP. | 26 // We ignore this because RequestWakeUpAt is a NOP. |
27 } | 27 } |
28 | 28 |
| 29 void ThrottledTimeDomain::SetNextTaskRunTime(base::TimeTicks run_time) { |
| 30 next_task_ = run_time; |
| 31 } |
| 32 |
29 base::Optional<base::TimeDelta> ThrottledTimeDomain::DelayTillNextTask( | 33 base::Optional<base::TimeDelta> ThrottledTimeDomain::DelayTillNextTask( |
30 LazyNow* lazy_now) { | 34 LazyNow* lazy_now) { |
| 35 if (next_task_ && next_task_ > lazy_now->Now()) |
| 36 return next_task_.value() - lazy_now->Now(); |
| 37 |
31 base::TimeTicks next_run_time; | 38 base::TimeTicks next_run_time; |
32 if (!NextScheduledRunTime(&next_run_time)) | 39 if (!NextScheduledRunTime(&next_run_time)) |
33 return base::nullopt; | 40 return base::nullopt; |
34 | 41 |
35 base::TimeTicks now = lazy_now->Now(); | 42 base::TimeTicks now = lazy_now->Now(); |
36 if (now >= next_run_time) | 43 if (now >= next_run_time) |
37 return base::TimeDelta(); // Makes DoWork post an immediate continuation. | 44 return base::TimeDelta(); // Makes DoWork post an immediate continuation. |
38 | 45 |
39 // We assume the owner (i.e. TaskQueueThrottler) will manage wake-ups on our | 46 // We assume the owner (i.e. TaskQueueThrottler) will manage wake-ups on our |
40 // behalf. | 47 // behalf. |
41 return base::nullopt; | 48 return base::nullopt; |
42 } | 49 } |
43 | 50 |
44 } // namespace scheduler | 51 } // namespace scheduler |
45 } // namespace blink | 52 } // namespace blink |
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