Macro tracing::event_enabled

macro_rules! event_enabled {
    ($($rest:tt)*) => { ... };
}

Tests whether an event with the specified level and target would be enabled.

This is similar to [enabled!], but queries the current subscriber specifically for an event, whereas [enabled!] queries for an event or span.

See the documentation for [enabled!] for more details on using this macro. See also [span_enabled!].

Examples

if event_enabled!(target: "my_crate", Level::DEBUG) {
    // some expensive work...
}
// simpler
if event_enabled!(Level::DEBUG) {
    // some expensive work...
}
// with fields
if event_enabled!(Level::DEBUG, foo_field) {
    // some expensive work...
}