Rust and Tell - Berlin - Hot code reload in Rust by Robert Krahn

Rust

Discover how to enable hot code reloading in Rust, a powerful feature that allows you to modify and reload code while your program is running, without restarting.

Key takeaways

Hot code reloading in Rust is possible by defining a crate that can be reloaded while the program is running.
The hot lib reloader is a library that can reload a library while the program is running, and it works by watching the library directory for changes and reloading the library when it detects a change.
The reloader can be used with cargo expand to generate the necessary code for the library.
The library can be reloaded by calling the WaitForAboutToReload function, which will return a token that can be used to check if the library has been reloaded.
The reloader can also be used to reload the state of the program, and it provides a WaitForReload function that can be used to wait for the reload to complete.
The reloader can be used with the hot macro to define hot reloadable functions, which can be reloaded while the program is running.
The reloader has some limitations, such as not being able to reload traits and not being able to change the type or return type of a function.
The reloader can be used with the libloading crate to load the library, and it provides a getSymbol function that can be used to get a pointer to a function in the library.
The reloader can be used with the WaitForAboutToReload and WaitForReload functions to wait for the reload to complete.
The reloader can be used with the lib crate to load the library, and it provides a getSymbol function that can be used to get a pointer to a function in the library.
The reloader has some limitations, such as not being able to reload traits and not being able to change the type or return type of a function.
The reloader can be used with the hot macro to define hot reloadable functions, which can be reloaded while the program is running.
The reloader can be used with the WaitForAboutToReload and WaitForReload functions to wait for the reload to complete.
The reloader can be used with the libloading crate to load the library, and it provides a getSymbol function that can be used to get a pointer to a function in the library.

Rust and Tell - Berlin - Hot code reload in Rust by Robert Krahn

More talks