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Bug #17477

closed

Ractor and pp incompatibility

Added by kirs (Kir Shatrov) over 1 year ago. Updated over 1 year ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Target version:
-
[ruby-core:101731]

Description

r = Ractor.new do
  pp("foobar")
end
Ractor.select(r)

fails with:

#<Thread:0x00007f973414a050 run> terminated with exception (report_on_exception is true):
<internal:/opt/rubies/3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:164:in `ensure in require': can not access non-shareable objects in constant Kernel::RUBYGEMS_ACTIVATION_MONITOR by non-main ractor. (Ractor::IsolationError)
	from <internal:/opt/rubies/3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:167:in `require'
	from notractor.rb:8:in `block in <main>'
<internal:/opt/rubies/3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:37:in `require': can not access non-shareable objects in constant Kernel::RUBYGEMS_ACTIVATION_MONITOR by non-main ractor. (Ractor::IsolationError)
	from notractor.rb:8:in `block in <main>'
<internal:ractor>:345:in `select': thrown by remote Ractor. (Ractor::RemoteError)
	from notractor.rb:11:in `<main>'
<internal:/opt/rubies/3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:164:in `ensure in require': can not access non-shareable objects in constant Kernel::RUBYGEMS_ACTIVATION_MONITOR by non-main ractor. (Ractor::IsolationError)
	from <internal:/opt/rubies/3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:167:in `require'
	from notractor.rb:8:in `block in <main>'
<internal:/opt/rubies/3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:37:in `require': can not access non-shareable objects in constant Kernel::RUBYGEMS_ACTIVATION_MONITOR by non-main ractor. (Ractor::IsolationError)
	from notractor.rb:8:in `block in <main>'

This is easy to fix by calling require 'pp' in the top from the main Ractor - but I don't think it is expected for developers. We should optimize for developer's happiness and either make it just work or make it clear that everything should be required beforehand.


Related issues 1 (1 open0 closed)

Related to Ruby master - Bug #17420: Unsafe mutation of $" when doing non-RubyGems require in RactorOpenko1 (Koichi Sasada)Actions
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