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31 lines
865 B
C++
31 lines
865 B
C++
#pragma once
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#include <atomic>
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#include <functional>
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namespace DB
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{
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class ReadBuffer;
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class WriteBuffer;
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/** Copies data from ReadBuffer to WriteBuffer, all that is.
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*/
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void copyData(ReadBuffer & from, WriteBuffer & to);
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/** Copies `bytes` bytes from ReadBuffer to WriteBuffer. If there are no `bytes` bytes, then throws an exception.
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*/
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void copyData(ReadBuffer & from, WriteBuffer & to, size_t bytes);
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/** The same, with the condition to cancel.
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*/
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void copyData(ReadBuffer & from, WriteBuffer & to, const std::atomic<int> & is_cancelled);
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void copyData(ReadBuffer & from, WriteBuffer & to, size_t bytes, const std::atomic<int> & is_cancelled);
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void copyData(ReadBuffer & from, WriteBuffer & to, std::function<void()> cancellation_hook);
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void copyData(ReadBuffer & from, WriteBuffer & to, size_t bytes, std::function<void()> cancellation_hook);
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}
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