1 | #pragma once |
2 | |
3 | #include <atomic> |
4 | #include <functional> |
5 | |
6 | |
7 | namespace DB |
8 | { |
9 | |
10 | class ReadBuffer; |
11 | class WriteBuffer; |
12 | |
13 | |
14 | /** Copies data from ReadBuffer to WriteBuffer, all that is. |
15 | */ |
16 | void copyData(ReadBuffer & from, WriteBuffer & to); |
17 | |
18 | /** Copies `bytes` bytes from ReadBuffer to WriteBuffer. If there are no `bytes` bytes, then throws an exception. |
19 | */ |
20 | void copyData(ReadBuffer & from, WriteBuffer & to, size_t bytes); |
21 | |
22 | /** The same, with the condition to cancel. |
23 | */ |
24 | void copyData(ReadBuffer & from, WriteBuffer & to, const std::atomic<int> & is_cancelled); |
25 | void copyData(ReadBuffer & from, WriteBuffer & to, size_t bytes, const std::atomic<int> & is_cancelled); |
26 | |
27 | void copyData(ReadBuffer & from, WriteBuffer & to, std::function<void()> cancellation_hook); |
28 | void copyData(ReadBuffer & from, WriteBuffer & to, size_t bytes, std::function<void()> cancellation_hook); |
29 | |
30 | } |
31 | |