Re: I created a faster JSON parser

[Gerd Möllmann]

Mattias Engdegård <mattias.engdegard@gmail.com> writes:

> There are some options. `record_unwind_protect_ptr_mark` would be one,
> and it was made for code like this, but Gerd has been grumbling about
> it lately. Perhaps it's easier just to disable GC in the dynamic scope
> (inhibit_garbage_collection).

Yes, I'm grumbling because record_..._mark assumes GC is mark-sweep. And
it's really super ugly to work around.

And if you disable GC, I'll be grumbling because that's not good for a
concurrent GC.

What do I propose: If you can, please make objects reachable from the
control stack. For instance, create a context object on the stack that
has a Lisp vector member. That will prevent GC'ing the vector and by
that its contents, of course. You could pass a pointer to the context
around to get access to the vector in subroutines, replace it with a
larger vector if necessary, and so on.

Howsoever, that needed to be said! ;-).