Wes McKinney created ARROW-1403:
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Summary: [C++] Add variant of SerializeRecordBatch that accepts an
writer-allocator callback
Key: ARROW-1403
URL: https://issues.apache.org/jira/browse/ARROW-1403
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Wes McKinney
Fix For: 0.7.0
When writing to other kinds of interfaces, like GPU, it would be useful to be
able to pass a function or closure that can instantiate an instance of
{{OutputStream}} (which might write to CPU memory, GPU, etc.) given the
computed size of the record batch. Currently we allocate new CPU memory and
write to that buffer, but this would eliminate an intermediate copy.
So something like
{code}
typedef std::function<Status(const int64_t, std::unique_ptr<OutputStream>*)>
StreamCreator;
{code}
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