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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_BASE_VIRTUAL_TIME_DOMAIN_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_BASE_VIRTUAL_TIME_DOMAIN_H_
#include "base/callback.h"
#include "base/macros.h"
#include "base/threading/thread_checker.h"
#include "third_party/blink/renderer/platform/scheduler/base/time_domain.h"
namespace blink {
namespace scheduler {
class PLATFORM_EXPORT VirtualTimeDomain : public TimeDomain {
public:
explicit VirtualTimeDomain(base::TimeTicks initial_time_ticks);
~VirtualTimeDomain() override;
// TimeDomain implementation:
LazyNow CreateLazyNow() const override;
base::TimeTicks Now() const override;
base::Optional<base::TimeDelta> DelayTillNextTask(LazyNow* lazy_now) override;
const char* GetName() const override;
// Advances this time domain to |now|. NOTE |now| is supposed to be
// monotonically increasing. NOTE it's the responsibility of the caller to
// call TaskQueueManager::MaybeScheduleImmediateWork if needed.
void AdvanceNowTo(base::TimeTicks now);
protected:
void OnRegisterWithTaskQueueManager(
TaskQueueManagerImpl* task_queue_manager) override;
void RequestWakeUpAt(base::TimeTicks now, base::TimeTicks run_time) override;
void CancelWakeUpAt(base::TimeTicks run_time) override;
void AsValueIntoInternal(
base::trace_event::TracedValue* state) const override;
void RequestDoWork();
private:
mutable base::Lock lock_; // Protects |now_ticks_|
base::TimeTicks now_ticks_;
TaskQueueManagerImpl* task_queue_manager_; // NOT OWNED
base::Closure do_work_closure_;
DISALLOW_COPY_AND_ASSIGN(VirtualTimeDomain);
};
} // namespace scheduler
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_BASE_VIRTUAL_TIME_DOMAIN_H_
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