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Summary: The patch introduces a helper method in `util/compression.h` called `UncompressData` that dispatches calls to the correct uncompression method based on type, and changes `UncompressBlockContentsForCompressionType` and `Benchmark::Uncompress` in `db_bench` so they are implemented in terms of the new method. This eliminates some code duplication. (`Benchmark::Compress` is also updated to use the previously introduced `CompressData` helper.) In addition, the patch brings the implementation of `Snappy_Uncompress` into sync with the other uncompression methods by making the method compute the buffer size and allocate the buffer itself. Finally, the patch eliminates some potentially risky back-and-forth conversions between various unsigned and signed integer types by exposing the size of the allocated buffer as a `size_t` instead of an `int`. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7434 Test Plan: `make check` `./db_bench -benchmarks=compress,uncompress --compression_type ...` Reviewed By: riversand963 Differential Revision: D23900011 Pulled By: ltamasi fbshipit-source-id: b25df63ceec4639889be94acb22eb53e530c54e0
27 lines
838 B
C++
27 lines
838 B
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// 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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#include <string>
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#include "rocksdb/rocksdb_namespace.h"
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namespace ROCKSDB_NAMESPACE {
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namespace port {
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namespace xpress {
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bool Compress(const char* input, size_t length, std::string* output);
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char* Decompress(const char* input_data, size_t input_length,
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size_t* uncompressed_size);
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}
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}
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} // namespace ROCKSDB_NAMESPACE
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