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src/leveldb/db/write_batch_internal.h
45 строк
1 KB
Wladimir J. van der Laan
Update to leveldb upstream using subtree merge
28 янв 2020, 18:59
28 янв 2020, 18:59
20a6bab
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// 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. #ifndef STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_ #define STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_ #include "db/dbformat.h" #include "leveldb/write_batch.h" namespace leveldb { class MemTable; // WriteBatchInternal provides static methods for manipulating a // WriteBatch that we don't want in the public WriteBatch interface. class WriteBatchInternal { public: // Return the number of entries in the batch. static int Count(const WriteBatch* batch); // Set the count for the number of entries in the batch. static void SetCount(WriteBatch* batch, int n); // Return the sequence number for the start of this batch. static SequenceNumber Sequence(const WriteBatch* batch); // Store the specified number as the sequence number for the start of // this batch. static void SetSequence(WriteBatch* batch, SequenceNumber seq); static Slice Contents(const WriteBatch* batch) { return Slice(batch->rep_); } static size_t ByteSize(const WriteBatch* batch) { return batch->rep_.size(); } static void SetContents(WriteBatch* batch, const Slice& contents); static Status InsertInto(const WriteBatch* batch, MemTable* memtable); static void Append(WriteBatch* dst, const WriteBatch* src); }; } // namespace leveldb #endif // STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_