Add RUBY_ATOMIC_{PTR_,}FETCH macros for atomic loads
This can already be emulated by doing an atomic fetch_add of zero, but this is more explicit.
[Bug #19994]
Add RUBY_ATOMIC_{PTR_,}FETCH macros for atomic loads
This can already be emulated by doing an atomic fetch_add of zero, but
this is more explicit.
[Bug #19994]