Feature #17418: Add `Ractor.main?` and `Ractor.main`

• Status: Closed
• Assignee: ko1 (Koichi Sasada)
• Target version: -

[marcandre (Marc-Andre Lafortune)]

Since main Ractor is special, it seems useful to have an easy way to check if the current ractor is the main ractor.

Ractor.main? # => true
Ractor.new { Ractor.main? }.take # => false

As far as I know, a gem could be loaded from a non-main Ractor so there is no reliable way for a gem to know the main Ractor (except than trying to do something that is not allowed)

We might as well add Ractor.main to return the main Ractor (probably less useful though).

[marcandre (Marc-Andre Lafortune)]

• Subject changed from Add `Ractor.main` and `Ractor.main?` to Add `Ractor.main?` and `Ractor.main`

[ko1 (Koichi Sasada)]

• Status changed from Open to Closed

Applied in changeset git|d0e4ccbefcdd6032d0ae70bc54c9a4fb55d92576.

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add Ractor.main

It returns main Ractor, like Thread.main.
[Feature #17418]

[ko1 (Koichi Sasada)]

Thread.main is provided, so I think there is no problem to introduce Ractor.main.
If we find an issue about it, consider to remove it.