[ARROW-12485] [C++] Use mimalloc as the default memory allocator on macOS

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28250
• Assignee: Jonathan Keane
• Reporter: Jonathan Keane
• Created: 20/Apr/21 18:44
• Updated: 11/Jan/23 08:26
• Resolved: 21/Apr/21 12:02

Description

This is a follow on to ARROW-12316 which was supposed to do that (and I thought it did!) but now I'm suspecting we actually wanted that if logic at https://github.com/apache/arrow/blob/master/cpp/src/arrow/memory_pool.cc#L168-L180 instead/as well or even better use the first element in SupportedBackends() vector.

Issue Links

• links to: GitHub Pull Request #10117