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https://issues.apache.org/jira/browse/ARROW-1360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135501#comment-16135501
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Wes McKinney commented on ARROW-1360:
-------------------------------------
As I've dug into this, I believe it may be better to defer writing to
implementations of OutputStream, ReadableFile, so it might be better to close
this. For example, {{FixedSizeBufferOutputStream}} supports a parallel memcpy
to CPU memory. We can keep thinking about it until we've hardened some of the
issues around the JIRAs attached to ARROW-1055
> [C++] Add Copy virtual method to arrow::Buffer
> ----------------------------------------------
>
> Key: ARROW-1360
> URL: https://issues.apache.org/jira/browse/ARROW-1360
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
>
> Some kinds of buffers (like GPU buffers) may need to use something other than
> {{memcpy}} (or its parallel variant) to copy memory. It might be useful to
> provide an abstract API for copying between RAM and some buffer.
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