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35 行
896 B
35 行
896 B
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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//
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// Log format information shared by reader and writer.
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// See ../doc/log_format.md for more detail.
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#ifndef STORAGE_LEVELDB_DB_LOG_FORMAT_H_
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#define STORAGE_LEVELDB_DB_LOG_FORMAT_H_
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namespace leveldb {
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namespace log {
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enum RecordType {
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// Zero is reserved for preallocated files
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kZeroType = 0,
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kFullType = 1,
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// For fragments
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kFirstType = 2,
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kMiddleType = 3,
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kLastType = 4
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};
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static const int kMaxRecordType = kLastType;
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static const int kBlockSize = 32768;
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// Header is checksum (4 bytes), length (2 bytes), type (1 byte).
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static const int kHeaderSize = 4 + 2 + 1;
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} // namespace log
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} // namespace leveldb
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#endif // STORAGE_LEVELDB_DB_LOG_FORMAT_H_
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