How would be something like code reloading from a library compiling with emscripten?

[GyroPower]

Let's say I have a websocket client made with QWebsockets from QT and the Gui is on a different module (meaning a shared library loaded on runtime) that it generates a new Gui object on the heap and get a reference of the client to send messages getting the input of a text box and pass it to the websocket session to send to the server connected, is there a mechanism to load modules, or structure modules for a project compiled to webassembly that can be linked and unlink on the fly to load symbols and recreate an object from that module relinked? If it is or something similar, where can I find info about the topic? Or it is not possible? And thanks for your attention.

[sbc100]

You can use dlopen (or the async emscirpten_dlopen) to load new modules on the fly.

In terms of cleaning up the old modules we don't have a great testing story for that yet, but you handle all the C++ cleanup of the old stuff you should be able to make it work. I'm just not sure how good the JS dynamic loading code is at cleaning up all the references to the old code once you call dlclose. I'm pretty sure there is no way to comepletely remove all traces of a module once you called dlopen and dlsym on it, since the code for that module will be references from the Wasm table at that point.

In other words, I think it will work but if you load an unbounded amount of module you may eventually run out of memory.

[sbc100]

See https://emscripten.org/docs/compiling/Dynamic-Linking.html for general info on how to get started with dynamic linking.

[GyroPower]

Thank you so much, sorry for not looking before well about the topic, thanks :)