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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_LAYERS_DEADLINE_POLICY_H_
#define CC_LAYERS_DEADLINE_POLICY_H_
#include <cstdint>
#include <optional>
#include <string>
#include "base/check.h"
#include "cc/cc_export.h"
namespace cc {
class CC_EXPORT DeadlinePolicy {
public:
enum Type {
kUseExistingDeadline,
kUseDefaultDeadline,
kUseSpecifiedDeadline,
kUseInfiniteDeadline
};
static DeadlinePolicy UseExistingDeadline();
static DeadlinePolicy UseDefaultDeadline();
static DeadlinePolicy UseSpecifiedDeadline(uint32_t deadline_in_frames);
static DeadlinePolicy UseInfiniteDeadline();
DeadlinePolicy(const DeadlinePolicy& other);
DeadlinePolicy& operator=(const DeadlinePolicy& other) = default;
~DeadlinePolicy() = default;
bool use_existing_deadline() const {
return policy_type_ == DeadlinePolicy::kUseExistingDeadline;
}
std::optional<uint32_t> deadline_in_frames() const {
DCHECK(policy_type_ == Type::kUseDefaultDeadline ||
policy_type_ == Type::kUseSpecifiedDeadline ||
policy_type_ == Type::kUseInfiniteDeadline);
return deadline_in_frames_;
}
Type policy_type() const { return policy_type_; }
bool operator==(const DeadlinePolicy& other) const {
return other.policy_type_ == policy_type_ &&
other.deadline_in_frames_ == deadline_in_frames_;
}
bool operator!=(const DeadlinePolicy& other) const {
return !(*this == other);
}
std::string ToString() const;
private:
explicit DeadlinePolicy(
Type policy_type,
std::optional<uint32_t> deadline_in_frames = std::nullopt);
Type policy_type_;
std::optional<uint32_t> deadline_in_frames_;
};
} // namespace cc
#endif // CC_LAYERS_DEADLINE_POLICY_H_
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