From: xtkoba+ruby@...
Date: 2021-04-10T00:40:48+00:00
Subject: [ruby-core:103361] [Ruby master Bug#17791] Ractor exception when	using Nokogiri

Issue #17791 has been updated by xtkoba (Tee KOBAYASHI).


This is because a function (`read_memory`) in a C extension (`nokogiri.so`) is called which is not marked as ractor-safe (see Feature #17307).

A workaround would be to mark it so, although I don't know if it is truly ractor-safe.

----------------------------------------
Bug #17791: Ractor exception when using Nokogiri
https://bugs.ruby-lang.org/issues/17791#change-91452

* Author: tomanderson (Thomas Ender)
* Status: Open
* Priority: Normal
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
Parsing xml using nokogiri:
``` r
  doc = Nokogiri.XML('<foo><bar /></foo>', nil, 'EUC-JP')
```
Suppose I want to parse 4 xmls with 4 ractors, it will raise an unsafe exception:

Ractor::UnsafeError: ractor unsafe method called from not main ractor

the ruby version is 3.0.1.

I wonder if there is any way to avoid this. 



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