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use log::trace;
use std::time::Instant;
#[macro_export]
macro_rules! trace_time {
($name: expr) => {
let _timer = $crate::PerfTimer::new($name);
};
}
pub struct PerfTimer {
name: &'static str,
start: Instant,
}
impl PerfTimer {
pub fn new(name: &'static str) -> PerfTimer {
PerfTimer { name, start: Instant::now() }
}
}
impl Drop for PerfTimer {
fn drop(&mut self) {
let elapsed = self.start.elapsed();
let ms = elapsed.as_millis();
trace!(target: "perf", "{}: {:.2}ms", self.name, ms);
}
}