From: Eric Wong <normalperson@...>
Date: 2018-09-09T17:26:04+00:00
Subject: [ruby-core:88927] Re: [Ruby trunk Feature#15095] [PATCH] share VM stack between threads and fibers if identical

ko1@atdot.net wrote:
> > ec->vm_stack is always allocated with malloc, so stacks for root
> > fiber (thread stack) and non-root fibers can be shared as long
> > as the size is the same.
> 
> I'm not sure why we can share the VM stack. If we run root fiber and non-root fiber with switching, it will conflicts.
> Do I misunderstand something?

Sorry, I mean they can share VM stack cache; not the in-use VM stack.

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