fdf882ded2
Summary: When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433 Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag. Differential Revision: D19977691 fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
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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#pragma once
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#include "rocksdb/trace_reader_writer.h"
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namespace ROCKSDB_NAMESPACE {
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class RandomAccessFileReader;
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class WritableFileWriter;
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// FileTraceReader allows reading RocksDB traces from a file.
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class FileTraceReader : public TraceReader {
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public:
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explicit FileTraceReader(std::unique_ptr<RandomAccessFileReader>&& reader);
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~FileTraceReader();
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virtual Status Read(std::string* data) override;
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virtual Status Close() override;
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private:
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std::unique_ptr<RandomAccessFileReader> file_reader_;
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Slice result_;
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size_t offset_;
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char* const buffer_;
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static const unsigned int kBufferSize;
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};
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// FileTraceWriter allows writing RocksDB traces to a file.
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class FileTraceWriter : public TraceWriter {
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public:
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explicit FileTraceWriter(std::unique_ptr<WritableFileWriter>&& file_writer)
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: file_writer_(std::move(file_writer)) {}
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~FileTraceWriter();
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virtual Status Write(const Slice& data) override;
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virtual Status Close() override;
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virtual uint64_t GetFileSize() override;
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private:
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std::unique_ptr<WritableFileWriter> file_writer_;
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};
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} // namespace ROCKSDB_NAMESPACE
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