Stream: helpdesk (published)

Topic: ✔ Reach internals of PackageCompiler app

DrChainsaw (Jul 15 2022 at 11:46):

How difficult is it to reach the internals of a PackageCompiler.jl app?

Assume that the main function only calls SomePackage.somefunction(ARGS[1]), is it then feasible to using only the compiled artifact(s) to somehow call SomePackage.anotherfunction?

For example, if I have been given an executable .jar file, I think it is easy to call other methods than the main method if I just import it to a java project, and I can unzip the .jar to see its contents. Is it similar for PackageCompiler.jl or is the sysimage more opaque?

Sebastian Pfitzner (Jul 15 2022 at 11:51):

You should always be able to load the generated sysimg into a normal Julia process (with -J) and can then do whatever you want, no?

DrChainsaw (Jul 15 2022 at 11:57):

Sorry, I have never used PackageCompiler.jl before so I'm completely new to it.

So even a compiled "app" can be loaded as a normal image and then you have access to all the included packages?

Sebastian Pfitzner (Jul 15 2022 at 12:00):

yes: https://julialang.github.io/PackageCompiler.jl/stable/apps.html#Using-reflection-and-finding-lowered-code

DrChainsaw (Jul 15 2022 at 12:02):

Thanks, should have read more than just the first section :rolling_eyes:

DrChainsaw (Jul 15 2022 at 12:08):

I can't find mark resolved. Is it not available in the browser version of Zulip?

Sebastian Pfitzner (Jul 15 2022 at 12:09):

it's there for me in the browser:
image.png

Notification Bot (Jul 15 2022 at 12:12):

DrChainsaw has marked this topic as resolved.

Last updated: Nov 22 2024 at 04:41 UTC