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https://issues.apache.org/jira/browse/ARROW-8299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-8299.
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Fix Version/s: 0.17.0
Resolution: Fixed
Issue resolved by pull request 6870
[https://github.com/apache/arrow/pull/6870]
> [C++] Reusable "optional ParallelFor" function for optional use of
> multithreading
> ---------------------------------------------------------------------------------
>
> Key: ARROW-8299
> URL: https://issues.apache.org/jira/browse/ARROW-8299
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.17.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> We often see code like
> {code}
> if (use_threads) {
> return ::arrow::internal::ParallelFor(n, Func);
> } else {
> for (size_t i = 0; i < n; ++i) {
> RETURN_NOT_OK(Func(i));
> }
> return Status::OK();
> {code}
> It might be nice to have a helper function to do this. It doesn't even need
> to be an inline template, it could be a precompiled function accepting
> {{std::function<Status(int)>}}
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