Macro trace_event 

macro_rules! trace_event {
    ($($arg:tt)*) => { ... };
}

Conditional event recording macro - compiles to no-op when profiling is disabled.

Use this for recording events within spans without creating new spans.

Example

use edgefirst_client::trace_event;

fn download_file(url: &str) {
    trace_event!("starting download", url = %url);
    // ... download
    trace_event!("download complete", bytes = 1024);
}