From: Nobuyoshi Nakada <nobu@...>
Date: 2015-01-13T13:23:36+09:00
Subject: [ruby-core:67558] Re: [ruby-trunk - Feature #3187] Allow dynamic Fiber stack size

On 2015/01/13 3:23, jared@jaredbeck.com wrote:
> ~~~
> ruby --version
> ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-darwin13.0]
> 
> echo 'puts RUBY_VM_FIBER_VM_STACK_SIZE' | ruby
> -:1:in `<main>': uninitialized constant RUBY_VM_FIBER_VM_STACK_SIZE (NameError)
> 
> echo 'puts RUBY_FIBER_MACHINE_STACK_SIZE' | ruby
> -:1:in `<main>': uninitialized constant RUBY_FIBER_MACHINE_STACK_SIZE (NameError)
> ~~~

They are environment variables.