1 | #pragma once |
2 | |
3 | #include <Processors/IProcessor.h> |
4 | |
5 | |
6 | namespace DB |
7 | { |
8 | |
9 | /// Look for first Ready or Async processor by depth-first search in needed input ports and full output ports. |
10 | /// NOTE: Pipeline must not have cycles. |
11 | //template <typename Visit> |
12 | //void traverse(IProcessor & processor, Visit && visit) |
13 | //{ |
14 | // IProcessor::Status status = visit(processor); |
15 | // |
16 | // if (status == IProcessor::Status::Ready || status == IProcessor::Status::Async) |
17 | // return; |
18 | // |
19 | // if (status == IProcessor::Status::NeedData) |
20 | // for (auto & input : processor.getInputs()) |
21 | // if (input.isNeeded() && !input.hasData()) |
22 | // traverse(input.getOutputPort().getProcessor(), std::forward<Visit>(visit)); |
23 | // |
24 | // if (status == IProcessor::Status::PortFull) |
25 | // for (auto & output : processor.getOutputs()) |
26 | // if (output.hasData()) |
27 | // traverse(output.getInputPort().getProcessor(), std::forward<Visit>(visit)); |
28 | //} |
29 | |
30 | } |
31 | |