alt Hacker NewsAbout structs:
https://docs.rs/subsecond/0.7.0-alpha.1/subsecond/index.html...
"In practice, frameworks that implement subsecond patching properly will throw out the old state and thus you should never witness a segfault due to misalignment or size changes. Frameworks are encouraged to aggressively dispose of old state that might cause size and alignment changes."
https://www.erlang.org/docs/24/man/gen_server#Module:code_ch...
Perhaps I'm missing something, maybe subsecond is a good tool for toy apps or for a developer workflow. But for anything serious, I'd think that managing layout of structs is a primary concern.
Replies
conradludgate • today at 7:34 AM
> Subsecond is only enabled when debug_assertions are enabled so you can safely ship your application with Subsecond enabled without worrying about the performance overhead.
debug_assertions is usually only enabled in the development phase (release build default to debug_assertions=false), so yes this is not intended for production workloads
It’s a developer tool to speed up rust iteration, not a production tool like erlang.
That being said, bevy is using bevy-reflect to implement proper struct hot-reloading between hot-patches.