Macro log 

macro_rules! log {
    ($level:expr, $($arg:tt)+) => { ... };
}

Logs a message at the given level.

This is the core logging macro. All level-specific macros delegate to it.

The macro references a bare __log_prefix!() which resolves at the call site via Rust’s textual macro scoping. The prefix is passed as a separate field on the Record rather than concatenated into the format string, so implicit format captures (info!("{var}")) work normally.

Examples

use ostd::log::Level;
ostd::log!(Level::Warning, "unsupported");
ostd::log!(Level::Info, "value = {}", x);
ostd::log!(Level::Debug, "{name} started");