When is an object "added" to ruby (and can be GCed) ?

[sasq64]

At which points in a program does Ruby take control over mrb_values created in C ?

If I just create an object, and don't return it to ruby somehow, it wont be freed by Ruby, so I need to free it myself.
But if the mrb_value is transfered to ruby somehow, I must make sure to not free it myself.

I find it tricky to create a strategy around objects created in native.

[matz]

The objects created by mrb_obj_alloc() directly or indirectly are all managed by GC. When they are allocated they are also referenced from GC arena, which keeps object reference until C function terminates. See doc/guides/gc-arena-howto.md