# Precompile and real time loops
**URL:** https://discourse.julialang.org/t/precompile-and-real-time-loops/102025
**Category:** New to Julia
**Tags:** question
**Created:** [July 24, 2023, 3:17pm UTC](https://discourse.julialang.org/t/precompile-and-real-time-loops/102025 "2023-07-24T15:17:41Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@JTriggerFish](https://discourse.julialang.org/u/JTriggerFish)
#### Post date: [July 24, 2023, 3:17pm UTC](https://discourse.julialang.org/t/precompile-and-real-time-loops/102025/1 "2023-07-24T15:17:41Z")
I’m working on a package that includes a real time loop where there is an audio thread and a a “while true” loop that waits for user input in a loop.
When doing “using [PkgName]” in the REPL, it tries to compile it but the main() function gets called and the audio starts playing and the import never returns.
How can avoid this ? I do want to precompile as much of the package as possible because I want to avoid pauses due to the JIT but I want the main function or at least some parts of it not to be executed.
Code is here for reference:
>
---
### Author:  [@contradict](https://discourse.julialang.org/u/contradict)
#### Post date: [July 24, 2023, 3:26pm UTC](https://discourse.julialang.org/t/precompile-and-real-time-loops/102025/2 "2023-07-24T15:26:11Z")
The [documentation](https://docs.julialang.org/en/v1/manual/faq/#How-do-I-check-if-the-current-file-is-being-run-as-the-main-script?-1) suggests
```julia
if abspath(PROGRAM_FILE) == @ __FILE__
main()
end
```
---
### Author:  [@JTriggerFish](https://discourse.julialang.org/u/JTriggerFish)
#### Post date: [July 24, 2023, 3:37pm UTC](https://discourse.julialang.org/t/precompile-and-real-time-loops/102025/3 "2023-07-24T15:37:05Z")
Ah indeed, I just had to replace the line
main()
with the snippet you posted. Thank you very much !