From 4887f3789817f87bf1272af0b52684e3364270c2 Mon Sep 17 00:00:00 2001 From: jacqueline Date: Wed, 8 Mar 2023 11:35:54 +1100 Subject: add leveldb --- lib/leveldb/db/write_batch_internal.h | 45 +++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 lib/leveldb/db/write_batch_internal.h (limited to 'lib/leveldb/db/write_batch_internal.h') diff --git a/lib/leveldb/db/write_batch_internal.h b/lib/leveldb/db/write_batch_internal.h new file mode 100644 index 00000000..fce86e3f --- /dev/null +++ b/lib/leveldb/db/write_batch_internal.h @@ -0,0 +1,45 @@ +// 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_ -- cgit v1.2.3