[DOC] concurrency guide WIP #754
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Sep 23, 2025
| ## The VM Lock | ||
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| There's only one VM lock and its for critical sections that can only be entered by one ractor at a time. | ||
| Without ractors, the VM lock is useless. It does not stop all ractors from running, as ractors can run |
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Noob Q: what's the relationship/difference between the VM Lock mentioned here and GVL?
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This is actually explained in a different section.
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Thx I'm seeing it now. I think it's worth moving it forward as that's likely known by most Ruby devs looking at this doc, and it'd be great to avoid confusion between them as early as possible.
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| ## The VM Lock | ||
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| There's only one VM lock and its for critical sections that can only be entered by one ractor at a time. |
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| There's only one VM lock and its for critical sections that can only be entered by one ractor at a time. | |
| There's only one VM lock and it's for critical sections that can only be entered by one ractor at a time. |
| # Concurrency Guide | ||
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| This is a guide to thinking about concurrency in the native cruby source code, whether that's | ||
| contributing to Ruby by writing C or Rust. This doesn't touch on native extensions, only the core |
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If by Rust you mean YJIT & ZJIT, maybe we can be more specific here? Like `contributing to Ruby interpreter and its JIT compilers (YJIT & ZJIT).
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