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https://issues.apache.org/jira/browse/ARROW-17259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney reassigned ARROW-17259:
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Assignee: Wes McKinney
> [C++] Use shared_ptr<DataType> less throughout arrow/compute
> ------------------------------------------------------------
>
> Key: ARROW-17259
> URL: https://issues.apache.org/jira/browse/ARROW-17259
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.0.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> It turns out we generate a ton of code just copying and manipulating
> {{shared_ptr<DataType>}} throughput arrow/compute, and especially in the
> configuration of the function/kernels registry. One function
> {{RegisterScalarArithmetic}} generates around 300kb of code, which on looking
> at disassembly contains a significant amount of inlined shared_ptr template
> code. I made an attempt to refactoring things to use {{const DataType*}} for
> function signatures which removes quite a bit of code bloat, and puts us on a
> path to using fewer shared_ptr's in general
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