From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:45:59 +0200 Subject: Adding upstream version 16.2.11+ds. Signed-off-by: Daniel Baumann --- src/rocksdb/utilities/merge_operators/bytesxor.h | 39 ++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/rocksdb/utilities/merge_operators/bytesxor.h (limited to 'src/rocksdb/utilities/merge_operators/bytesxor.h') diff --git a/src/rocksdb/utilities/merge_operators/bytesxor.h b/src/rocksdb/utilities/merge_operators/bytesxor.h new file mode 100644 index 000000000..ab0c5aecc --- /dev/null +++ b/src/rocksdb/utilities/merge_operators/bytesxor.h @@ -0,0 +1,39 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). + +#pragma once + +#include +#include +#include +#include "rocksdb/env.h" +#include "rocksdb/merge_operator.h" +#include "rocksdb/slice.h" +#include "util/coding.h" +#include "utilities/merge_operators.h" + +namespace ROCKSDB_NAMESPACE { + +// A 'model' merge operator that XORs two (same sized) array of bytes. +// Implemented as an AssociativeMergeOperator for simplicity and example. +class BytesXOROperator : public AssociativeMergeOperator { + public: + // XORs the two array of bytes one byte at a time and stores the result + // in new_value. len is the number of xored bytes, and the length of new_value + virtual bool Merge(const Slice& key, + const Slice* existing_value, + const Slice& value, + std::string* new_value, + Logger* logger) const override; + + virtual const char* Name() const override { + return "BytesXOR"; + } + + void XOR(const Slice* existing_value, const Slice& value, + std::string* new_value) const; +}; + +} // namespace ROCKSDB_NAMESPACE -- cgit v1.2.3