[ARROW-10966] [C++] Use FnOnce for ThreadPool's tasks instead of std::function

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 3.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26889
• Assignee: Michal Nowakiewicz
• Reporter: Ben Kietzman
• Created: 18/Dec/20 20:09
• Updated: 11/Jan/23 08:16
• Resolved: 08/Jan/21 18:07

Description

FnOnce drops dependencies on invocation and is lighter weight than std::function

Issue Links

• links to: GitHub Pull Request #9134