Ben Kietzman created ARROW-7822:
-----------------------------------
Summary: [C++] Allocation free error Status constants
Key: ARROW-7822
URL: https://issues.apache.org/jira/browse/ARROW-7822
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Ben Kietzman
Assignee: Ben Kietzman
{{Status::state_}} could be made a tagged pointer without affecting the fast
path (passing around a non error status). The extra bit could be used to mark a
Status' state as heap allocated or not, allowing very error statuses to be
extremely cheap when their error state is known to be immutable. For example,
this would allow a cheap default of {{Result<>::status_}}.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
