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Make C-extension Ractor-safe #278
Description
In planning ahead to the near future when TruffleRuby can run C-extensions marked with rb_ext_ractor_safe(true) in parallel, and for when Ractors are no longer just experimental, it would be great if the C-extension could be made Ractor-safe, or marked as such if it already is so!
Activity
[-]Make C-extension threadsafe/Ractor-safe[/-][+]Make C-extension Ractor-safe[/+]eregon commentedon Sep 18, 2024
I took a look at https://github.com/bcrypt-ruby/bcrypt-ruby/blob/master/ext/mri/bcrypt_ext.c.
The only global variables there are assigned once during the Init_ function, so there is simply no global state.
So that seems safe to mark as Ractor-safe.
Docs about rb_ext_ractor_safe: https://github.com/ruby/ruby/blob/master/doc/extension.rdoc#appendix-f-ractor-support-