| // 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. |
| |
| #ifndef STORAGE_LEVELDB_DB_LOG_FORMAT_H_ |
| #define STORAGE_LEVELDB_DB_LOG_FORMAT_H_ |
| |
| namespace leveldb { |
| namespace log { |
| |
| enum RecordType { |
| // Zero is reserved for preallocated files |
| kZeroType = 0, |
| |
| kFullType = 1, |
| |
| // For fragments |
| kFirstType = 2, |
| kMiddleType = 3, |
| kLastType = 4 |
| }; |
| static const int kMaxRecordType = kLastType; |
| |
| static const int kBlockSize = 32768; |
| |
| // Header is checksum (4 bytes), length (2 bytes), type (1 byte). |
| static const int kHeaderSize = 4 + 2 + 1; |
| |
| } // namespace log |
| } // namespace leveldb |
| |
| #endif // STORAGE_LEVELDB_DB_LOG_FORMAT_H_ |