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Tip revision: cda424239691e7501125096920a21cc041c16224 authored by Adam Retter on 08 March 2018, 19:16:46 UTC
Java wrapper for Native Comparators
Java wrapper for Native Comparators
Tip revision: cda4242
log_format.h
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
//
// Log format information shared by reader and writer.
// See ../doc/log_format.txt for more detail.
#pragma once
namespace rocksdb {
namespace log {
enum RecordType {
// Zero is reserved for preallocated files
kZeroType = 0,
kFullType = 1,
// For fragments
kFirstType = 2,
kMiddleType = 3,
kLastType = 4,
// For recycled log files
kRecyclableFullType = 5,
kRecyclableFirstType = 6,
kRecyclableMiddleType = 7,
kRecyclableLastType = 8,
};
static const int kMaxRecordType = kRecyclableLastType;
static const unsigned int kBlockSize = 32768;
// Header is checksum (4 bytes), length (2 bytes), type (1 byte)
static const int kHeaderSize = 4 + 2 + 1;
// Recyclable header is checksum (4 bytes), type (1 byte), log number
// (4 bytes), length (2 bytes).
static const int kRecyclableHeaderSize = 4 + 1 + 4 + 2;
} // namespace log
} // namespace rocksdb