From: "shan (Shannon Skipper)" <noreply@...>
Date: 2022-07-20T03:18:09+00:00
Subject: [ruby-core:109255] [Ruby master Bug#18919] Ractor: can't share method-to-proc objects

Issue #18919 has been updated by shan (Shannon Skipper).


This is just an aside, but what it's worth you can pass the class and method name and reconstitute a Method instance inside a Ractor.

``` ruby
require 'bigdecimal'

meth = Kernel.method(:BigDecimal)

ractor = Ractor.new(meth.owner, meth.name) do |meth_owner, meth_name|
  meth_owner.method(meth_name)
end

ractor.take.call(42)
#=> 0.42e2
```


----------------------------------------
Bug #18919: Ractor: can't share method-to-proc objects
https://bugs.ruby-lang.org/issues/18919#change-98387

* Author: chucke (Tiago Cardoso)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
The following is not shareable:

```ruby
> meth = ::Kernel.method(:BigDecimal)
=> #<Method: Kernel.BigDecimal(*)>
<internal:ractor>:816:in `make_shareable': can not make shareable object for #<Method: Kernel.BigDecimal(*)> (Ractor::Error)
```

I understand that procs have the issue of accessing outer-scope variables, but does the same apply to methods converted to procs?



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>