df34aea331
Summary: PlainTableReader now only allows mmap-mode. Add the support to non-mmap mode for more flexibility. Refactor the codes to move all logic of reading data to PlainTableKeyDecoder, and consolidate the calls to Read() call and ReadVarint32() call. Implement the calls for both of mmap and non-mmap case seperately. For non-mmap mode, make copy of keys in several places when we need to move the buffer after reading the keys. Test Plan: Add the mode of non-mmap case in plain_table_db_test. Run it in valgrind mode too. Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D47187
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
// 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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#pragma once
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#ifndef ROCKSDB_LITE
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#include <string>
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#include "rocksdb/options.h"
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#include "rocksdb/table.h"
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namespace rocksdb {
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struct EnvOptions;
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using std::unique_ptr;
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class Status;
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class RandomAccessFile;
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class WritableFile;
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class Table;
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class TableBuilder;
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class AdaptiveTableFactory : public TableFactory {
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public:
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~AdaptiveTableFactory() {}
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explicit AdaptiveTableFactory(
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std::shared_ptr<TableFactory> table_factory_to_write,
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std::shared_ptr<TableFactory> block_based_table_factory,
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std::shared_ptr<TableFactory> plain_table_factory,
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std::shared_ptr<TableFactory> cuckoo_table_factory);
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const char* Name() const override { return "AdaptiveTableFactory"; }
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Status NewTableReader(const TableReaderOptions& table_reader_options,
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unique_ptr<RandomAccessFileReader>&& file,
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uint64_t file_size,
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unique_ptr<TableReader>* table) const override;
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TableBuilder* NewTableBuilder(
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const TableBuilderOptions& table_builder_options,
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WritableFileWriter* file) const override;
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// Sanitizes the specified DB Options.
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Status SanitizeOptions(const DBOptions& db_opts,
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const ColumnFamilyOptions& cf_opts) const override {
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return Status::OK();
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}
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std::string GetPrintableTableOptions() const override;
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private:
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std::shared_ptr<TableFactory> table_factory_to_write_;
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std::shared_ptr<TableFactory> block_based_table_factory_;
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std::shared_ptr<TableFactory> plain_table_factory_;
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std::shared_ptr<TableFactory> cuckoo_table_factory_;
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};
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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