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// Copyright 2020 The Pigweed Authors
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
#include <cstdint>
namespace pw {
namespace kvs {
namespace internal {
// Whether an entry is present or deleted.
enum class EntryState : bool { kValid, kDeleted };
// Essential metadata for an entry that is stored in memory.
struct KeyDescriptor {
uint32_t key_hash;
uint32_t transaction_id;
EntryState state; // TODO: Pack into transaction ID? or something?
} // namespace internal
} // namespace kvs
} // namespace pw