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30 lines
683 B
C++
30 lines
683 B
C++
#pragma once
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#include <string>
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#include <fcntl.h>
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#include <DB/IO/WriteBuffer.h>
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#include <DB/IO/BufferWithOwnMemory.h>
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namespace DB
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{
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class WriteBufferFromFileBase : public BufferWithOwnMemory<WriteBuffer>
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{
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public:
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WriteBufferFromFileBase(size_t buf_size, char * existing_memory, size_t alignment)
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: BufferWithOwnMemory<WriteBuffer>(buf_size, existing_memory, alignment)
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{
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}
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virtual ~WriteBufferFromFileBase() {}
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virtual off_t seek(off_t off, int whence) = 0;
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virtual off_t getPositionInFile() = 0;
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virtual void truncate(off_t length) = 0;
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virtual void sync() = 0;
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virtual std::string getFileName() const noexcept = 0;
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virtual int getFD() const noexcept = 0;
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};
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}
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