3 ms·

Does rvalue mean something different here than it normally means? Normally rvalues refer to temporary values.

• jemmaissroff 6y ago
  The first post in the series also explains RVALUES in the context of the Ruby Heap if it's helpful https://jemma.dev/blog/gc-internal https://jemma.dev/blog/gc-internal
• dragontamer 6y ago
  Rvalue seems to be a 40-byte "Ruby Object". (If an object takes up more than 40-bytes, it gets an additional allocation, and the first 40-bytes go into the rvalue "slot").
• tenderlove 6y ago
  RVALUE is the base type in Ruby's heap. It refers specifically to [this struct](https://github.com/ruby/ruby/blob/7bd93293621b85a87e7e117317612bb0a84efb7a/gc.c#L559-L605 https://github.com/ruby/ruby/blob/7bd93293621b85a87e7e117317...). All Ruby objects are instances of an RVALUE struct. Hope that helps!
  • WJW 6y ago
    In particular in Ruby it derives from "Ruby value" rather than the C/C++ rvalues that can appear on the righthand side of an assignment.
• snvsn 6y ago
  Yes. In the Ruby VM, an RVALUE [0] is a union (a "generic type") of structs that represent all the different kinds of Ruby object types and a couple of runtime types. [0] https://sonots.github.io/ruby-capi/db/d8e/struct_r_v_a_l_u_e.html https://sonots.github.io/ruby-capi/db/d8e/struct_r_v_a_l_u_e...