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| 1 // Copyright 2015 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 #ifndef COMPONENTS_SCHEDULER_BASE_VIRTUAL_TIME_DOMAIN_H_ |
| 6 #define COMPONENTS_SCHEDULER_BASE_VIRTUAL_TIME_DOMAIN_H_ |
| 7 |
| 8 #include "base/callback.h" |
| 9 #include "base/macros.h" |
| 10 #include "components/scheduler/base/time_domain.h" |
| 11 #include "components/scheduler/scheduler_export.h" |
| 12 |
| 13 namespace scheduler { |
| 14 class TaskQueueManagerDelegate; |
| 15 |
| 16 class SCHEDULER_EXPORT VirtualTimeDomain : public TimeDomain { |
| 17 public: |
| 18 VirtualTimeDomain(base::TimeTicks initial_time); |
| 19 |
| 20 // TimeDomain implementation: |
| 21 LazyNow CreateLazyNow() override; |
| 22 bool MaybeAdvanceTime() override; |
| 23 const char* GetName() const override; |
| 24 |
| 25 // Advances this time domain to |now|. NOTE |now| is supposed to be |
| 26 // monotonically increasing. |
| 27 void AdvanceTo(base::TimeTicks now); |
| 28 |
| 29 protected: |
| 30 void RequestWakeup(base::TimeDelta delay) override; |
| 31 void AsValueIntoInternal( |
| 32 base::trace_event::TracedValue* state) const override; |
| 33 |
| 34 private: |
| 35 mutable base::Lock lock_; // Protects |now_|. |
| 36 base::TimeTicks now_; |
| 37 |
| 38 ~VirtualTimeDomain() override; |
| 39 |
| 40 DISALLOW_COPY_AND_ASSIGN(VirtualTimeDomain); |
| 41 }; |
| 42 |
| 43 } // namespace scheduler |
| 44 |
| 45 #endif // COMPONENTS_SCHEDULER_BASE_VIRTUAL_TIME_DOMAIN_H_ |
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