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class method · added in Ruby 4.0
Ractor.shareable_proc
[T] () { (?) [self: nil] -> T } -> ^(?) [self: nil] -> T
[T, S] (self: S) { (?) [self: S] -> T } -> ^(?) [self: S] -> T
Ractor.shareable_proc(self: nil){} → shareable proc
ractor.rb
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# File tmp/rubies/ruby-4.1.0-preview1/ractor.rb, line 706
def self.shareable_proc self: nil
Primitive.attr! :use_block
Primitive.rb_builtin_shareable_proc(Primitive.local_self!)
end
Returns a shareable copy of the given block’s Proc. The value of self in the Proc will be replaced with the value passed via the self: keyword, or nil if not given.
In a shareable Proc, access to any outer variables is prohibited.
Example
a = 42 Ractor.shareable_proc{ p a } #=> can not isolate a Proc because it accesses outer variables (a). (Ractor::IsolationError)
The value of self in the Proc must be a shareable object.
Example
Ractor.shareable_proc(self: self){} #=> self should be shareable: main (Ractor::IsolationError)
Ruby version changes
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4.0
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Ractor.shareable_procandRactor.shareable_lambdaare introduced to make shareableProcor lambda. [Feature #21550], [Feature #21557]
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