ClickHouse/dbms/IO/copyData.h
Ivan 97f2a2213e
Move all folders inside /dbms one level up (#9974)
* Move some code outside dbms/src folder
* Fix paths
2020-04-02 02:51:21 +03:00

31 lines
865 B
C++

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