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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VIZ_SERVICE_SURFACES_SURFACE_DEPENDENCY_DEADLINE_H_
#define COMPONENTS_VIZ_SERVICE_SURFACES_SURFACE_DEPENDENCY_DEADLINE_H_
#include <optional>
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "components/viz/service/viz_service_export.h"
namespace base {
class TickClock;
} // namespace base
namespace viz {
class FrameDeadline;
class VIZ_SERVICE_EXPORT SurfaceDependencyDeadline {
public:
explicit SurfaceDependencyDeadline(const base::TickClock* tick_clock);
SurfaceDependencyDeadline(const SurfaceDependencyDeadline&) = delete;
SurfaceDependencyDeadline& operator=(const SurfaceDependencyDeadline&) =
delete;
~SurfaceDependencyDeadline();
// Sets up a deadline in wall time where
// deadline = frame_start_time + deadline_in_frames * frame_interval.
void Set(const FrameDeadline& frame_deadline);
// Returns whether the deadline has passed.
bool HasDeadlinePassed() const;
// If a deadline had been set, then cancel the deadline and return the
// the duration of the event tracked by this object. If there was no
// deadline set, then return std::nullopt.
std::optional<base::TimeDelta> Cancel();
bool has_deadline() const { return deadline_.has_value(); }
std::optional<base::TimeTicks> deadline_for_testing() const {
return deadline_;
}
bool operator==(const SurfaceDependencyDeadline& other) const;
private:
raw_ptr<const base::TickClock> tick_clock_;
base::TimeTicks start_time_;
std::optional<base::TimeTicks> deadline_;
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_SURFACES_SURFACE_DEPENDENCY_DEADLINE_H_
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