did julia has function similar to R_Preserveobject and R_ReleaseObject function?

[Yu Gong]

I know julia has jl_gc_push and jl_gc_pop macros ,but it only can used in a function.
I want define a variable and lock it in one function ,and unlock it in other function if need and aviod gc to release it untile call unlock.
R have R_Preserveobject and R_ReleaseObject to do this.did julia has function similar to R_Preserveobject and R_ReleaseObject function?

[Yu Gong]

I mean function in julia c api

[Yichao Yu]

No. You can create a global/rooted array/dict and push/pop object from it.