boost::capy::any_buffer_source::pull
Pull buffer data from the source.
Synopsis
Declared in <boost/capy/io/any_buffer_source.hpp>
auto
pull(std::span<const_buffer> dest);Description
Fills the provided span with buffer descriptors from the underlying source. The operation completes when data is available, the source is exhausted, or an error occurs.
Preconditions
The wrapper must contain a valid source (has_value() == true). The caller must not call this function again after a prior call returned an error.
Return Value
An awaitable yielding (error_code,std::span<const_buffer>). On success with data, a non‐empty span of filled buffers. On EOF, ec == cond::eof and span is empty.
Parameters
| Name | Description |
|---|---|
dest |
Span of const_buffer to fill. |
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