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use std::time::Duration;
use std::{sync::Mutex, time::Instant};
lazy_static::lazy_static! {
static ref START: Mutex<Option<Instant>> = Mutex::new(None);
}
#[macro_export]
macro_rules! print {
() => {
{
println!("[{: >8.3}ms] {}:{}", $crate::lap().as_nanos() as f64 * 1e-6, file!(), line!());
}
};
}
#[doc(hidden)]
pub fn lap() -> std::time::Duration {
let mut start = START.lock().unwrap();
let elapsed;
match *start {
Some(ref mut instant) => {
elapsed = instant.elapsed();
*instant = instant.checked_add(elapsed).unwrap();
}
None => {
*start = Some(Instant::now());
elapsed = Duration::from_secs(0);
}
}
elapsed
}
#[cfg(test)]
mod tests {
#[test]
fn it_works() {
crate::print!();
crate::print!();
}
}